src/sys_fs_cgroup.c

   1 #include "common.h"
   2
   3 // ----------------------------------------------------------------------------
   4 // cgroup globals
   5
   6 #define CHART_PRIORITY_SYSTEMD_SERVICES 19000
   7 #define CHART_PRIORITY_CONTAINERS       40000
   8
   9 static long system_page_size = 4096; // system will be queried via sysconf() in configuration()
  10
  11 static int cgroup_enable_cpuacct_stat = CONFIG_ONDEMAND_ONDEMAND;
  12 static int cgroup_enable_cpuacct_usage = CONFIG_ONDEMAND_ONDEMAND;
  13 static int cgroup_enable_memory = CONFIG_ONDEMAND_ONDEMAND;
  14 static int cgroup_enable_detailed_memory = CONFIG_ONDEMAND_ONDEMAND;
  15 static int cgroup_enable_memory_failcnt = CONFIG_ONDEMAND_ONDEMAND;
  16 static int cgroup_enable_swap = CONFIG_ONDEMAND_ONDEMAND;
  17 static int cgroup_enable_blkio_io = CONFIG_ONDEMAND_ONDEMAND;
  18 static int cgroup_enable_blkio_ops = CONFIG_ONDEMAND_ONDEMAND;
  19 static int cgroup_enable_blkio_throttle_io = CONFIG_ONDEMAND_ONDEMAND;
  20 static int cgroup_enable_blkio_throttle_ops = CONFIG_ONDEMAND_ONDEMAND;
  21 static int cgroup_enable_blkio_merged_ops = CONFIG_ONDEMAND_ONDEMAND;
  22 static int cgroup_enable_blkio_queued_ops = CONFIG_ONDEMAND_ONDEMAND;
  23
  24 static int cgroup_enable_systemd_services = CONFIG_ONDEMAND_YES;
  25 static int cgroup_enable_systemd_services_detailed_memory = CONFIG_ONDEMAND_NO;
  26 static int cgroup_used_memory_without_cache = CONFIG_ONDEMAND_YES;
  27
  28 static int cgroup_search_in_devices = 1;
  29
  30 static int cgroup_enable_new_cgroups_detected_at_runtime = 1;
  31 static int cgroup_check_for_new_every = 10;
  32 static int cgroup_update_every = 1;
  33
  34 static int cgroup_recheck_zero_blkio_every_iterations = 10;
  35 static int cgroup_recheck_zero_mem_failcnt_every_iterations = 10;
  36 static int cgroup_recheck_zero_mem_detailed_every_iterations = 10;
  37
  38 static char *cgroup_cpuacct_base = NULL;
  39 static char *cgroup_blkio_base = NULL;
  40 static char *cgroup_memory_base = NULL;
  41 static char *cgroup_devices_base = NULL;
  42
  43 static int cgroup_root_count = 0;
  44 static int cgroup_root_max = 500;
  45 static int cgroup_max_depth = 0;
  46
  47 static SIMPLE_PATTERN *enabled_cgroup_patterns = NULL;
  48 static SIMPLE_PATTERN *enabled_cgroup_paths = NULL;
  49 static SIMPLE_PATTERN *enabled_cgroup_renames = NULL;
  50 static SIMPLE_PATTERN *systemd_services_cgroups = NULL;
  51
  52 static char *cgroups_rename_script = NULL;
  53
  54 static uint32_t Read_hash = 0;
  55 static uint32_t Write_hash = 0;
  56 static uint32_t user_hash = 0;
  57 static uint32_t system_hash = 0;
  58
  59 void read_cgroup_plugin_configuration() {
  60     system_page_size = sysconf(_SC_PAGESIZE);
  61
  62     Read_hash = simple_hash("Read");
  63     Write_hash = simple_hash("Write");
  64     user_hash = simple_hash("user");
  65     system_hash = simple_hash("system");
  66
  67     cgroup_update_every = (int)config_get_number("plugin:cgroups", "update every", rrd_update_every);
  68     if(cgroup_update_every < rrd_update_every)
  69         cgroup_update_every = rrd_update_every;
  70
  71     cgroup_check_for_new_every = (int)config_get_number("plugin:cgroups", "check for new cgroups every", cgroup_check_for_new_every * cgroup_update_every);
  72     if(cgroup_check_for_new_every < cgroup_update_every)
  73         cgroup_check_for_new_every = cgroup_update_every;
  74
  75     cgroup_enable_cpuacct_stat = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct stat (total CPU)", cgroup_enable_cpuacct_stat);
  76     cgroup_enable_cpuacct_usage = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct usage (per core CPU)", cgroup_enable_cpuacct_usage);
  77
  78     cgroup_enable_memory = config_get_boolean_ondemand("plugin:cgroups", "enable memory (used mem including cache)", cgroup_enable_memory);
  79     cgroup_enable_detailed_memory = config_get_boolean_ondemand("plugin:cgroups", "enable detailed memory", cgroup_enable_detailed_memory);
  80     cgroup_enable_memory_failcnt = config_get_boolean_ondemand("plugin:cgroups", "enable memory limits fail count", cgroup_enable_memory_failcnt);
  81     cgroup_enable_swap = config_get_boolean_ondemand("plugin:cgroups", "enable swap memory", cgroup_enable_swap);
  82
  83     cgroup_enable_blkio_io = config_get_boolean_ondemand("plugin:cgroups", "enable blkio bandwidth", cgroup_enable_blkio_io);
  84     cgroup_enable_blkio_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio operations", cgroup_enable_blkio_ops);
  85     cgroup_enable_blkio_throttle_io = config_get_boolean_ondemand("plugin:cgroups", "enable blkio throttle bandwidth", cgroup_enable_blkio_throttle_io);
  86     cgroup_enable_blkio_throttle_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio throttle operations", cgroup_enable_blkio_throttle_ops);
  87     cgroup_enable_blkio_queued_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio queued operations", cgroup_enable_blkio_queued_ops);
  88     cgroup_enable_blkio_merged_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio merged operations", cgroup_enable_blkio_merged_ops);
  89
  90     cgroup_recheck_zero_blkio_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero blkio every iterations", cgroup_recheck_zero_blkio_every_iterations);
  91     cgroup_recheck_zero_mem_failcnt_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero memory failcnt every iterations", cgroup_recheck_zero_mem_failcnt_every_iterations);
  92     cgroup_recheck_zero_mem_detailed_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero detailed memory every iterations", cgroup_recheck_zero_mem_detailed_every_iterations);
  93
  94     cgroup_enable_systemd_services = config_get_boolean("plugin:cgroups", "enable systemd services", cgroup_enable_systemd_services);
  95     cgroup_enable_systemd_services_detailed_memory = config_get_boolean("plugin:cgroups", "enable systemd services detailed memory", cgroup_enable_systemd_services_detailed_memory);
  96     cgroup_used_memory_without_cache = config_get_boolean("plugin:cgroups", "report used memory without cache", cgroup_used_memory_without_cache);
  97
  98     char filename[FILENAME_MAX + 1], *s;
  99     struct mountinfo *mi, *root = mountinfo_read(0);
 100
 101     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct");
 102     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct");
 103     if(!mi) {
 104         error("Cannot find cgroup cpuacct mountinfo. Assuming default: /sys/fs/cgroup/cpuacct");
 105         s = "/sys/fs/cgroup/cpuacct";
 106     }
 107     else s = mi->mount_point;
 108     snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
 109     cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
 110
 111     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio");
 112     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
 113     if(!mi) {
 114         error("Cannot find cgroup blkio mountinfo. Assuming default: /sys/fs/cgroup/blkio");
 115         s = "/sys/fs/cgroup/blkio";
 116     }
 117     else s = mi->mount_point;
 118     snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
 119     cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
 120
 121     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "memory");
 122     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory");
 123     if(!mi) {
 124         error("Cannot find cgroup memory mountinfo. Assuming default: /sys/fs/cgroup/memory");
 125         s = "/sys/fs/cgroup/memory";
 126     }
 127     else s = mi->mount_point;
 128     snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
 129     cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
 130
 131     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "devices");
 132     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "devices");
 133     if(!mi) {
 134         error("Cannot find cgroup devices mountinfo. Assuming default: /sys/fs/cgroup/devices");
 135         s = "/sys/fs/cgroup/devices";
 136     }
 137     else s = mi->mount_point;
 138     snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, s);
 139     cgroup_devices_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/devices", filename);
 140
 141     cgroup_root_max = (int)config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
 142     cgroup_max_depth = (int)config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
 143
 144     cgroup_enable_new_cgroups_detected_at_runtime = config_get_boolean("plugin:cgroups", "enable new cgroups detected at run time", cgroup_enable_new_cgroups_detected_at_runtime);
 145
 146     enabled_cgroup_patterns = simple_pattern_create(
 147             config_get("plugin:cgroups", "enable by default cgroups matching",
 148                     " /system.slice/docker-*.scope "
 149                     " !*.mount "
 150                     " !*.partition "
 151                     " !*.scope "
 152                     " !*.service "
 153                     " !*.slice "
 154                     " !*.swap "
 155                     " !*.user "
 156                     " !/ "
 157                     " !/docker "
 158                     " !/libvirt "
 159                     " !/lxc "
 160                     " !/lxc/*/ns "         //  #1397
 161                     " !/machine "
 162                     " !/qemu "
 163                     " !/system "
 164                     " !/systemd "
 165                     " !/user "
 166                     " * "                  // enable anything else
 167             ), SIMPLE_PATTERN_EXACT);
 168
 169     enabled_cgroup_paths = simple_pattern_create(
 170             config_get("plugin:cgroups", "search for cgroups in subpaths matching",
 171                     " !*-qemu "            //  #345
 172                     " !/init.scope "
 173                     " !/system "
 174                     " !/systemd "
 175                     " !/user "
 176                     " !/user.slice "
 177                     " * "
 178             ), SIMPLE_PATTERN_EXACT);
 179
 180     snprintfz(filename, FILENAME_MAX, "%s/cgroup-name.sh", netdata_configured_plugins_dir);
 181     cgroups_rename_script = config_get("plugin:cgroups", "script to get cgroup names", filename);
 182
 183     enabled_cgroup_renames = simple_pattern_create(
 184             config_get("plugin:cgroups", "run script to rename cgroups matching",
 185                     " *docker* "
 186                     " *lxc* "
 187                     " !/ "
 188                     " !*.mount "
 189                     " !*.partition "
 190                     " !*.scope "
 191                     " !*.service "
 192                     " !*.slice "
 193                     " !*.swap "
 194                     " !*.user "
 195                     " * "
 196             ), SIMPLE_PATTERN_EXACT);
 197
 198     if(cgroup_enable_systemd_services) {
 199         systemd_services_cgroups = simple_pattern_create(
 200                 config_get("plugin:cgroups", "cgroups to match as systemd services",
 201                         " !/system.slice/*/*.service "
 202                         " /system.slice/*.service "
 203                 ), SIMPLE_PATTERN_EXACT);
 204     }
 205
 206     mountinfo_free(root);
 207 }
 208
 209 // ----------------------------------------------------------------------------
 210 // cgroup objects
 211
 212 struct blkio {
 213     int updated;
 214     int enabled; // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 215     int delay_counter;
 216
 217     char *filename;
 218
 219     unsigned long long Read;
 220     unsigned long long Write;
 221 /*
 222     unsigned long long Sync;
 223     unsigned long long Async;
 224     unsigned long long Total;
 225 */
 226 };
 227
 228 // https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
 229 struct memory {
 230     ARL_BASE *arl_base;
 231     ARL_ENTRY *arl_dirty;
 232     ARL_ENTRY *arl_swap;
 233
 234     int updated_detailed;
 235     int updated_usage_in_bytes;
 236     int updated_msw_usage_in_bytes;
 237     int updated_failcnt;
 238
 239     int enabled_detailed;           // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 240     int enabled_usage_in_bytes;     // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 241     int enabled_msw_usage_in_bytes; // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 242     int enabled_failcnt;            // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 243
 244     int delay_counter_detailed;
 245     int delay_counter_failcnt;
 246
 247     char *filename_detailed;
 248     char *filename_usage_in_bytes;
 249     char *filename_msw_usage_in_bytes;
 250     char *filename_failcnt;
 251
 252     int detailed_has_dirty;
 253     int detailed_has_swap;
 254
 255     // detailed metrics
 256     unsigned long long cache;
 257     unsigned long long rss;
 258     unsigned long long rss_huge;
 259     unsigned long long mapped_file;
 260     unsigned long long writeback;
 261     unsigned long long dirty;
 262     unsigned long long swap;
 263     unsigned long long pgpgin;
 264     unsigned long long pgpgout;
 265     unsigned long long pgfault;
 266     unsigned long long pgmajfault;
 267 /*
 268     unsigned long long inactive_anon;
 269     unsigned long long active_anon;
 270     unsigned long long inactive_file;
 271     unsigned long long active_file;
 272     unsigned long long unevictable;
 273     unsigned long long hierarchical_memory_limit;
 274     unsigned long long total_cache;
 275     unsigned long long total_rss;
 276     unsigned long long total_rss_huge;
 277     unsigned long long total_mapped_file;
 278     unsigned long long total_writeback;
 279     unsigned long long total_dirty;
 280     unsigned long long total_swap;
 281     unsigned long long total_pgpgin;
 282     unsigned long long total_pgpgout;
 283     unsigned long long total_pgfault;
 284     unsigned long long total_pgmajfault;
 285     unsigned long long total_inactive_anon;
 286     unsigned long long total_active_anon;
 287     unsigned long long total_inactive_file;
 288     unsigned long long total_active_file;
 289     unsigned long long total_unevictable;
 290 */
 291
 292     // single file metrics
 293     unsigned long long usage_in_bytes;
 294     unsigned long long msw_usage_in_bytes;
 295     unsigned long long failcnt;
 296 };
 297
 298 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 299 struct cpuacct_stat {
 300     int updated;
 301     int enabled; // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 302
 303     char *filename;
 304
 305     unsigned long long user;
 306     unsigned long long system;
 307 };
 308
 309 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 310 struct cpuacct_usage {
 311     int updated;
 312     int enabled; // CONFIG_ONDEMAND_YES or CONFIG_ONDEMAND_ONDEMAND
 313
 314     char *filename;
 315
 316     unsigned int cpus;
 317     unsigned long long *cpu_percpu;
 318 };
 319
 320 #define CGROUP_OPTIONS_DISABLED_DUPLICATE   0x00000001
 321 #define CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE 0x00000002
 322
 323 struct cgroup {
 324     uint32_t options;
 325
 326     char available;      // found in the filesystem
 327     char enabled;        // enabled in the config
 328
 329     char *id;
 330     uint32_t hash;
 331
 332     char *chart_id;
 333     uint32_t hash_chart;
 334
 335     char *chart_title;
 336
 337     struct cpuacct_stat cpuacct_stat;
 338     struct cpuacct_usage cpuacct_usage;
 339
 340     struct memory memory;
 341
 342     struct blkio io_service_bytes;              // bytes
 343     struct blkio io_serviced;                   // operations
 344
 345     struct blkio throttle_io_service_bytes;     // bytes
 346     struct blkio throttle_io_serviced;          // operations
 347
 348     struct blkio io_merged;                     // operations
 349     struct blkio io_queued;                     // operations
 350
 351     // per cgroup charts
 352     RRDSET *st_cpu;
 353     RRDSET *st_cpu_per_core;
 354     RRDSET *st_mem;
 355     RRDSET *st_writeback;
 356     RRDSET *st_mem_activity;
 357     RRDSET *st_pgfaults;
 358     RRDSET *st_mem_usage;
 359     RRDSET *st_mem_failcnt;
 360     RRDSET *st_io;
 361     RRDSET *st_serviced_ops;
 362     RRDSET *st_throttle_io;
 363     RRDSET *st_throttle_serviced_ops;
 364     RRDSET *st_queued_ops;
 365     RRDSET *st_merged_ops;
 366
 367     // services
 368     RRDDIM *rd_cpu;
 369     RRDDIM *rd_mem_usage;
 370     RRDDIM *rd_mem_failcnt;
 371     RRDDIM *rd_swap_usage;
 372
 373     RRDDIM *rd_mem_detailed_cache;
 374     RRDDIM *rd_mem_detailed_rss;
 375     RRDDIM *rd_mem_detailed_mapped;
 376     RRDDIM *rd_mem_detailed_writeback;
 377     RRDDIM *rd_mem_detailed_pgpgin;
 378     RRDDIM *rd_mem_detailed_pgpgout;
 379     RRDDIM *rd_mem_detailed_pgfault;
 380     RRDDIM *rd_mem_detailed_pgmajfault;
 381
 382     RRDDIM *rd_io_service_bytes_read;
 383     RRDDIM *rd_io_serviced_read;
 384     RRDDIM *rd_throttle_io_read;
 385     RRDDIM *rd_throttle_io_serviced_read;
 386     RRDDIM *rd_io_queued_read;
 387     RRDDIM *rd_io_merged_read;
 388
 389     RRDDIM *rd_io_service_bytes_write;
 390     RRDDIM *rd_io_serviced_write;
 391     RRDDIM *rd_throttle_io_write;
 392     RRDDIM *rd_throttle_io_serviced_write;
 393     RRDDIM *rd_io_queued_write;
 394     RRDDIM *rd_io_merged_write;
 395
 396     struct cgroup *next;
 397
 398 } *cgroup_root = NULL;
 399
 400 // ----------------------------------------------------------------------------
 401 // read values from /sys
 402
 403 static inline void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
 404     static procfile *ff = NULL;
 405
 406     if(likely(cp->filename)) {
 407         ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
 408         if(unlikely(!ff)) {
 409             cp->updated = 0;
 410             return;
 411         }
 412
 413         ff = procfile_readall(ff);
 414         if(unlikely(!ff)) {
 415             cp->updated = 0;
 416             return;
 417         }
 418
 419         unsigned long i, lines = procfile_lines(ff);
 420
 421         if(unlikely(lines < 1)) {
 422             error("File '%s' should have 1+ lines.", cp->filename);
 423             cp->updated = 0;
 424             return;
 425         }
 426
 427         for(i = 0; i < lines ; i++) {
 428             char *s = procfile_lineword(ff, i, 0);
 429             uint32_t hash = simple_hash(s);
 430
 431             if(unlikely(hash == user_hash && !strcmp(s, "user")))
 432                 cp->user = str2ull(procfile_lineword(ff, i, 1));
 433
 434             else if(unlikely(hash == system_hash && !strcmp(s, "system")))
 435                 cp->system = str2ull(procfile_lineword(ff, i, 1));
 436         }
 437
 438         cp->updated = 1;
 439
 440         if(unlikely(cp->enabled == CONFIG_ONDEMAND_ONDEMAND && (cp->user || cp->system)))
 441             cp->enabled = CONFIG_ONDEMAND_YES;
 442     }
 443 }
 444
 445 static inline void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
 446     static procfile *ff = NULL;
 447
 448     if(likely(ca->filename)) {
 449         ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
 450         if(unlikely(!ff)) {
 451             ca->updated = 0;
 452             return;
 453         }
 454
 455         ff = procfile_readall(ff);
 456         if(unlikely(!ff)) {
 457             ca->updated = 0;
 458             return;
 459         }
 460
 461         if(unlikely(procfile_lines(ff) < 1)) {
 462             error("File '%s' should have 1+ lines but has %zu.", ca->filename, procfile_lines(ff));
 463             ca->updated = 0;
 464             return;
 465         }
 466
 467         unsigned long i = procfile_linewords(ff, 0);
 468         if(unlikely(i == 0)) {
 469             return;
 470             ca->updated = 0;
 471         }
 472
 473         // we may have 1 more CPU reported
 474         while(i > 0) {
 475             char *s = procfile_lineword(ff, 0, i - 1);
 476             if(!*s) i--;
 477             else break;
 478         }
 479
 480         if(unlikely(i != ca->cpus)) {
 481             freez(ca->cpu_percpu);
 482             ca->cpu_percpu = mallocz(sizeof(unsigned long long) * i);
 483             ca->cpus = (unsigned int)i;
 484         }
 485
 486         unsigned long long total = 0;
 487         for(i = 0; i < ca->cpus ;i++) {
 488             unsigned long long n = str2ull(procfile_lineword(ff, 0, i));
 489             ca->cpu_percpu[i] = n;
 490             total += n;
 491         }
 492
 493         ca->updated = 1;
 494
 495         if(unlikely(ca->enabled == CONFIG_ONDEMAND_ONDEMAND && total))
 496             ca->enabled = CONFIG_ONDEMAND_YES;
 497     }
 498 }
 499
 500 static inline void cgroup_read_blkio(struct blkio *io) {
 501     static procfile *ff = NULL;
 502
 503     if(unlikely(io->enabled == CONFIG_ONDEMAND_ONDEMAND && io->delay_counter > 0)) {
 504         io->delay_counter--;
 505         return;
 506     }
 507
 508     if(likely(io->filename)) {
 509         ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
 510         if(unlikely(!ff)) {
 511             io->updated = 0;
 512             return;
 513         }
 514
 515         ff = procfile_readall(ff);
 516         if(unlikely(!ff)) {
 517             io->updated = 0;
 518             return;
 519         }
 520
 521         unsigned long i, lines = procfile_lines(ff);
 522
 523         if(unlikely(lines < 1)) {
 524             error("File '%s' should have 1+ lines.", io->filename);
 525             io->updated = 0;
 526             return;
 527         }
 528
 529         io->Read = 0;
 530         io->Write = 0;
 531 /*
 532         io->Sync = 0;
 533         io->Async = 0;
 534         io->Total = 0;
 535 */
 536
 537         for(i = 0; i < lines ; i++) {
 538             char *s = procfile_lineword(ff, i, 1);
 539             uint32_t hash = simple_hash(s);
 540
 541             if(unlikely(hash == Read_hash && !strcmp(s, "Read")))
 542                 io->Read += str2ull(procfile_lineword(ff, i, 2));
 543
 544             else if(unlikely(hash == Write_hash && !strcmp(s, "Write")))
 545                 io->Write += str2ull(procfile_lineword(ff, i, 2));
 546
 547 /*
 548             else if(unlikely(hash == Sync_hash && !strcmp(s, "Sync")))
 549                 io->Sync += str2ull(procfile_lineword(ff, i, 2));
 550
 551             else if(unlikely(hash == Async_hash && !strcmp(s, "Async")))
 552                 io->Async += str2ull(procfile_lineword(ff, i, 2));
 553
 554             else if(unlikely(hash == Total_hash && !strcmp(s, "Total")))
 555                 io->Total += str2ull(procfile_lineword(ff, i, 2));
 556 */
 557         }
 558
 559         io->updated = 1;
 560
 561         if(unlikely(io->enabled == CONFIG_ONDEMAND_ONDEMAND)) {
 562             if(unlikely(io->Read || io->Write))
 563                 io->enabled = CONFIG_ONDEMAND_YES;
 564             else
 565                 io->delay_counter = cgroup_recheck_zero_blkio_every_iterations;
 566         }
 567     }
 568 }
 569
 570 static inline void cgroup_read_memory(struct memory *mem) {
 571     static procfile *ff = NULL;
 572
 573     // read detailed ram usage
 574     if(likely(mem->filename_detailed)) {
 575         if(unlikely(mem->enabled_detailed == CONFIG_ONDEMAND_ONDEMAND && mem->delay_counter_detailed > 0)) {
 576             mem->delay_counter_detailed--;
 577             goto memory_next;
 578         }
 579
 580         ff = procfile_reopen(ff, mem->filename_detailed, NULL, PROCFILE_FLAG_DEFAULT);
 581         if(unlikely(!ff)) {
 582             mem->updated_detailed = 0;
 583             goto memory_next;
 584         }
 585
 586         ff = procfile_readall(ff);
 587         if(unlikely(!ff)) {
 588             mem->updated_detailed = 0;
 589             goto memory_next;
 590         }
 591
 592         unsigned long i, lines = procfile_lines(ff);
 593
 594         if(unlikely(lines < 1)) {
 595             error("File '%s' should have 1+ lines.", mem->filename_detailed);
 596             mem->updated_detailed = 0;
 597             goto memory_next;
 598         }
 599
 600         if(unlikely(!mem->arl_base)) {
 601             mem->arl_base = arl_create("cgroup/memory", NULL, 60);
 602
 603             arl_expect(mem->arl_base, "cache", &mem->cache);
 604             arl_expect(mem->arl_base, "rss", &mem->rss);
 605             arl_expect(mem->arl_base, "rss_huge", &mem->rss_huge);
 606             arl_expect(mem->arl_base, "mapped_file", &mem->mapped_file);
 607             arl_expect(mem->arl_base, "writeback", &mem->writeback);
 608             mem->arl_dirty = arl_expect(mem->arl_base, "dirty", &mem->dirty);
 609             mem->arl_swap  = arl_expect(mem->arl_base, "swap", &mem->swap);
 610             arl_expect(mem->arl_base, "pgpgin", &mem->pgpgin);
 611             arl_expect(mem->arl_base, "pgpgout", &mem->pgpgout);
 612             arl_expect(mem->arl_base, "pgfault", &mem->pgfault);
 613             arl_expect(mem->arl_base, "pgmajfault", &mem->pgmajfault);
 614         }
 615
 616         arl_begin(mem->arl_base);
 617
 618         for(i = 0; i < lines ; i++) {
 619             if(arl_check(mem->arl_base,
 620                     procfile_lineword(ff, i, 0),
 621                     procfile_lineword(ff, i, 1))) break;
 622         }
 623
 624         if(unlikely(mem->arl_dirty->flags & ARL_ENTRY_FLAG_FOUND))
 625             mem->detailed_has_dirty = 1;
 626
 627         if(unlikely(mem->arl_swap->flags & ARL_ENTRY_FLAG_FOUND))
 628             mem->detailed_has_swap = 1;
 629
 630         // fprintf(stderr, "READ: '%s', cache: %llu, rss: %llu, rss_huge: %llu, mapped_file: %llu, writeback: %llu, dirty: %llu, swap: %llu, pgpgin: %llu, pgpgout: %llu, pgfault: %llu, pgmajfault: %llu, inactive_anon: %llu, active_anon: %llu, inactive_file: %llu, active_file: %llu, unevictable: %llu, hierarchical_memory_limit: %llu, total_cache: %llu, total_rss: %llu, total_rss_huge: %llu, total_mapped_file: %llu, total_writeback: %llu, total_dirty: %llu, total_swap: %llu, total_pgpgin: %llu, total_pgpgout: %llu, total_pgfault: %llu, total_pgmajfault: %llu, total_inactive_anon: %llu, total_active_anon: %llu, total_inactive_file: %llu, total_active_file: %llu, total_unevictable: %llu\n", mem->filename, mem->cache, mem->rss, mem->rss_huge, mem->mapped_file, mem->writeback, mem->dirty, mem->swap, mem->pgpgin, mem->pgpgout, mem->pgfault, mem->pgmajfault, mem->inactive_anon, mem->active_anon, mem->inactive_file, mem->active_file, mem->unevictable, mem->hierarchical_memory_limit, mem->total_cache, mem->total_rss, mem->total_rss_huge, mem->total_mapped_file, mem->total_writeback, mem->total_dirty, mem->total_swap, mem->total_pgpgin, mem->total_pgpgout, mem->total_pgfault, mem->total_pgmajfault, mem->total_inactive_anon, mem->total_active_anon, mem->total_inactive_file, mem->total_active_file, mem->total_unevictable);
 631
 632         mem->updated_detailed = 1;
 633
 634         if(unlikely(mem->enabled_detailed == CONFIG_ONDEMAND_ONDEMAND)) {
 635             if(mem->cache || mem->dirty || mem->rss || mem->rss_huge || mem->mapped_file || mem->writeback || mem->swap || mem->pgpgin || mem->pgpgout || mem->pgfault || mem->pgmajfault)
 636                 mem->enabled_detailed = CONFIG_ONDEMAND_YES;
 637             else
 638                 mem->delay_counter_detailed = cgroup_recheck_zero_mem_detailed_every_iterations;
 639         }
 640     }
 641
 642 memory_next:
 643
 644     // read usage_in_bytes
 645     if(likely(mem->filename_usage_in_bytes)) {
 646         mem->updated_usage_in_bytes = !read_single_number_file(mem->filename_usage_in_bytes, &mem->usage_in_bytes);
 647         if(unlikely(mem->updated_usage_in_bytes && mem->enabled_usage_in_bytes == CONFIG_ONDEMAND_ONDEMAND && mem->usage_in_bytes))
 648             mem->enabled_usage_in_bytes = CONFIG_ONDEMAND_YES;
 649     }
 650
 651     // read msw_usage_in_bytes
 652     if(likely(mem->filename_msw_usage_in_bytes)) {
 653         mem->updated_msw_usage_in_bytes = !read_single_number_file(mem->filename_msw_usage_in_bytes, &mem->msw_usage_in_bytes);
 654         if(unlikely(mem->updated_msw_usage_in_bytes && mem->enabled_msw_usage_in_bytes == CONFIG_ONDEMAND_ONDEMAND && mem->msw_usage_in_bytes))
 655             mem->enabled_msw_usage_in_bytes = CONFIG_ONDEMAND_YES;
 656     }
 657
 658     // read failcnt
 659     if(likely(mem->filename_failcnt)) {
 660         if(unlikely(mem->enabled_failcnt == CONFIG_ONDEMAND_ONDEMAND && mem->delay_counter_failcnt > 0)) {
 661             mem->updated_failcnt = 0;
 662             mem->delay_counter_failcnt--;
 663         }
 664         else {
 665             mem->updated_failcnt = !read_single_number_file(mem->filename_failcnt, &mem->failcnt);
 666             if(unlikely(mem->updated_failcnt && mem->enabled_failcnt == CONFIG_ONDEMAND_ONDEMAND)) {
 667                 if(unlikely(!mem->failcnt))
 668                     mem->delay_counter_failcnt = cgroup_recheck_zero_mem_failcnt_every_iterations;
 669                 else
 670                     mem->enabled_failcnt = CONFIG_ONDEMAND_YES;
 671             }
 672         }
 673     }
 674 }
 675
 676 static inline void cgroup_read(struct cgroup *cg) {
 677     debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
 678
 679     cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
 680     cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
 681     cgroup_read_memory(&cg->memory);
 682     cgroup_read_blkio(&cg->io_service_bytes);
 683     cgroup_read_blkio(&cg->io_serviced);
 684     cgroup_read_blkio(&cg->throttle_io_service_bytes);
 685     cgroup_read_blkio(&cg->throttle_io_serviced);
 686     cgroup_read_blkio(&cg->io_merged);
 687     cgroup_read_blkio(&cg->io_queued);
 688 }
 689
 690 static inline void read_all_cgroups(struct cgroup *root) {
 691     debug(D_CGROUP, "reading metrics for all cgroups");
 692
 693     struct cgroup *cg;
 694
 695     for(cg = root; cg ; cg = cg->next)
 696         if(cg->enabled && cg->available)
 697             cgroup_read(cg);
 698 }
 699
 700 // ----------------------------------------------------------------------------
 701 // add/remove/find cgroup objects
 702
 703 #define CGROUP_CHARTID_LINE_MAX 1024
 704
 705 static inline char *cgroup_title_strdupz(const char *s) {
 706     if(!s || !*s) s = "/";
 707
 708     if(*s == '/' && s[1] != '\0') s++;
 709
 710     char *r = strdupz(s);
 711     netdata_fix_chart_name(r);
 712
 713     return r;
 714 }
 715
 716 static inline char *cgroup_chart_id_strdupz(const char *s) {
 717     if(!s || !*s) s = "/";
 718
 719     if(*s == '/' && s[1] != '\0') s++;
 720
 721     char *r = strdupz(s);
 722     netdata_fix_chart_id(r);
 723
 724     return r;
 725 }
 726
 727 static inline void cgroup_get_chart_name(struct cgroup *cg) {
 728     debug(D_CGROUP, "looking for the name of cgroup '%s' with chart id '%s' and title '%s'", cg->id, cg->chart_id, cg->chart_title);
 729
 730     pid_t cgroup_pid;
 731     char buffer[CGROUP_CHARTID_LINE_MAX + 1];
 732
 733     snprintfz(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'", cgroups_rename_script, cg->chart_id);
 734
 735     debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
 736     FILE *fp = mypopen(buffer, &cgroup_pid);
 737     if(fp) {
 738         // debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
 739         char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
 740         // debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
 741         mypclose(fp, cgroup_pid);
 742         // debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
 743
 744         if(s && *s && *s != '\n') {
 745             debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
 746
 747             trim(s);
 748
 749             freez(cg->chart_title);
 750             cg->chart_title = cgroup_title_strdupz(s);
 751
 752             freez(cg->chart_id);
 753             cg->chart_id = cgroup_chart_id_strdupz(s);
 754             cg->hash_chart = simple_hash(cg->chart_id);
 755         }
 756     }
 757     else
 758         error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer);
 759 }
 760
 761 static inline struct cgroup *cgroup_add(const char *id) {
 762     if(!id || !*id) id = "/";
 763     debug(D_CGROUP, "adding to list, cgroup with id '%s'", id);
 764
 765     if(cgroup_root_count >= cgroup_root_max) {
 766         info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
 767         return NULL;
 768     }
 769
 770     int def = simple_pattern_matches(enabled_cgroup_patterns, id)?cgroup_enable_new_cgroups_detected_at_runtime:0;
 771     struct cgroup *cg = callocz(1, sizeof(struct cgroup));
 772
 773     cg->id = strdupz(id);
 774     cg->hash = simple_hash(cg->id);
 775
 776     cg->chart_title = cgroup_title_strdupz(id);
 777
 778     cg->chart_id = cgroup_chart_id_strdupz(id);
 779     cg->hash_chart = simple_hash(cg->chart_id);
 780
 781     if(!cgroup_root)
 782         cgroup_root = cg;
 783     else {
 784         // append it
 785         struct cgroup *e;
 786         for(e = cgroup_root; e->next ;e = e->next) ;
 787         e->next = cg;
 788     }
 789
 790     cgroup_root_count++;
 791
 792     // fix the chart_id and title by calling the external script
 793     if(simple_pattern_matches(enabled_cgroup_renames, cg->id)) {
 794
 795         cgroup_get_chart_name(cg);
 796
 797         debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
 798     }
 799     else
 800         debug(D_CGROUP, "cgroup '%s' will not be renamed - it matches the list of disabled cgroup renames (will be shown as '%s')", cg->id, cg->chart_id);
 801
 802     int user_configurable = 1;
 803
 804     // check if this cgroup should be a systemd service
 805     if(cgroup_enable_systemd_services) {
 806         if(simple_pattern_matches(systemd_services_cgroups, cg->id) ||
 807                 simple_pattern_matches(systemd_services_cgroups, cg->chart_id)) {
 808             debug(D_CGROUP, "cgroup '%s' with chart id '%s' (title: '%s') matches systemd services cgroups", cg->id, cg->chart_id, cg->chart_title);
 809
 810             char buffer[CGROUP_CHARTID_LINE_MAX + 1];
 811             cg->options |= CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE;
 812
 813             strncpy(buffer, cg->id, CGROUP_CHARTID_LINE_MAX);
 814             char *s = buffer;
 815
 816             //freez(cg->chart_id);
 817             //cg->chart_id = cgroup_chart_id_strdupz(s);
 818             //cg->hash_chart = simple_hash(cg->chart_id);
 819
 820             // skip to the last slash
 821             size_t len = strlen(s);
 822             while(len--) if(unlikely(s[len] == '/')) break;
 823             if(len) s = &s[len + 1];
 824
 825             // remove extension
 826             len = strlen(s);
 827             while(len--) if(unlikely(s[len] == '.')) break;
 828             if(len) s[len] = '\0';
 829
 830             freez(cg->chart_title);
 831             cg->chart_title = cgroup_title_strdupz(s);
 832
 833             cg->enabled = 1;
 834             user_configurable = 0;
 835
 836             debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
 837         }
 838         else
 839             debug(D_CGROUP, "cgroup '%s' with chart id '%s' (title: '%s') does not match systemd services groups", cg->id, cg->chart_id, cg->chart_title);
 840     }
 841
 842     if(user_configurable) {
 843         // allow the user to enable/disable this individualy
 844         char option[FILENAME_MAX + 1];
 845         snprintfz(option, FILENAME_MAX, "enable cgroup %s", cg->chart_title);
 846         cg->enabled = (char) config_get_boolean("plugin:cgroups", option, def);
 847     }
 848
 849     // detect duplicate cgroups
 850     if(cg->enabled) {
 851         struct cgroup *t;
 852         for (t = cgroup_root; t; t = t->next) {
 853             if (t != cg && t->enabled && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
 854                 if (!strncmp(t->chart_id, "/system.slice/", 14) && !strncmp(cg->chart_id, "/init.scope/system.slice/", 25)) {
 855                     error("Control group with chart id '%s' already exists with id '%s' and is enabled. Swapping them by enabling cgroup with id '%s' and disabling cgroup with id '%s'.",
 856                           cg->chart_id, t->id, cg->id, t->id);
 857                     debug(D_CGROUP, "Control group with chart id '%s' already exists with id '%s' and is enabled. Swapping them by enabling cgroup with id '%s' and disabling cgroup with id '%s'.",
 858                           cg->chart_id, t->id, cg->id, t->id);
 859                     t->enabled = 0;
 860                     t->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
 861                 }
 862                 else {
 863                     error("Control group with chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
 864                           cg->chart_id, t->id, cg->id);
 865                     debug(D_CGROUP, "Control group with chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
 866                           cg->chart_id, t->id, cg->id);
 867                     cg->enabled = 0;
 868                     cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
 869                 }
 870
 871                 break;
 872             }
 873         }
 874     }
 875
 876     debug(D_CGROUP, "ADDED CGROUP: '%s' with chart id '%s' and title '%s' as %s (default was %s)", cg->id, cg->chart_id, cg->chart_title, (cg->enabled)?"enabled":"disabled", (def)?"enabled":"disabled");
 877
 878     return cg;
 879 }
 880
 881 static inline void cgroup_free(struct cgroup *cg) {
 882     debug(D_CGROUP, "Removing cgroup '%s' with chart id '%s' (was %s and %s)", cg->id, cg->chart_id, (cg->enabled)?"enabled":"disabled", (cg->available)?"available":"not available");
 883
 884     freez(cg->cpuacct_usage.cpu_percpu);
 885
 886     freez(cg->cpuacct_stat.filename);
 887     freez(cg->cpuacct_usage.filename);
 888
 889     arl_free(cg->memory.arl_base);
 890     freez(cg->memory.filename_detailed);
 891     freez(cg->memory.filename_failcnt);
 892     freez(cg->memory.filename_usage_in_bytes);
 893     freez(cg->memory.filename_msw_usage_in_bytes);
 894
 895     freez(cg->io_service_bytes.filename);
 896     freez(cg->io_serviced.filename);
 897
 898     freez(cg->throttle_io_service_bytes.filename);
 899     freez(cg->throttle_io_serviced.filename);
 900
 901     freez(cg->io_merged.filename);
 902     freez(cg->io_queued.filename);
 903
 904     freez(cg->id);
 905     freez(cg->chart_id);
 906     freez(cg->chart_title);
 907
 908     freez(cg);
 909
 910     cgroup_root_count--;
 911 }
 912
 913 // find if a given cgroup exists
 914 static inline struct cgroup *cgroup_find(const char *id) {
 915     debug(D_CGROUP, "searching for cgroup '%s'", id);
 916
 917     uint32_t hash = simple_hash(id);
 918
 919     struct cgroup *cg;
 920     for(cg = cgroup_root; cg ; cg = cg->next) {
 921         if(hash == cg->hash && strcmp(id, cg->id) == 0)
 922             break;
 923     }
 924
 925     debug(D_CGROUP, "cgroup '%s' %s in memory", id, (cg)?"found":"not found");
 926     return cg;
 927 }
 928
 929 // ----------------------------------------------------------------------------
 930 // detect running cgroups
 931
 932 // callback for find_file_in_subdirs()
 933 static inline void found_subdir_in_dir(const char *dir) {
 934     debug(D_CGROUP, "examining cgroup dir '%s'", dir);
 935
 936     struct cgroup *cg = cgroup_find(dir);
 937     if(!cg) {
 938         if(*dir && cgroup_max_depth > 0) {
 939             int depth = 0;
 940             const char *s;
 941
 942             for(s = dir; *s ;s++)
 943                 if(unlikely(*s == '/'))
 944                     depth++;
 945
 946             if(depth > cgroup_max_depth) {
 947                 info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
 948                 return;
 949             }
 950         }
 951         // debug(D_CGROUP, "will add dir '%s' as cgroup", dir);
 952         cg = cgroup_add(dir);
 953     }
 954
 955     if(cg) cg->available = 1;
 956 }
 957
 958 static inline int find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
 959     if(!this) this = base;
 960     debug(D_CGROUP, "searching for directories in '%s' (base '%s')", this?this:"", base);
 961
 962     size_t dirlen = strlen(this), baselen = strlen(base);
 963
 964     int ret = -1;
 965     int enabled = -1;
 966
 967     const char *relative_path = &this[baselen];
 968     if(!*relative_path) relative_path = "/";
 969
 970     DIR *dir = opendir(this);
 971     if(!dir) {
 972         error("Cannot read cgroups directory '%s'", base);
 973         return ret;
 974     }
 975     ret = 1;
 976
 977     callback(relative_path);
 978
 979     struct dirent *de = NULL;
 980     while((de = readdir(dir))) {
 981         if(de->d_type == DT_DIR
 982             && (
 983                 (de->d_name[0] == '.' && de->d_name[1] == '\0')
 984                 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
 985                 ))
 986             continue;
 987
 988         if(de->d_type == DT_DIR) {
 989             if(enabled == -1) {
 990                 const char *r = relative_path;
 991                 if(*r == '\0') r = "/";
 992
 993                 // do not decent in directories we are not interested
 994                 int def = simple_pattern_matches(enabled_cgroup_paths, r);
 995
 996                 // we check for this option here
 997                 // so that the config will not have settings
 998                 // for leaf directories
 999                 char option[FILENAME_MAX + 1];
1000                 snprintfz(option, FILENAME_MAX, "search for cgroups under %s", r);
1001                 option[FILENAME_MAX] = '\0';
1002                 enabled = config_get_boolean("plugin:cgroups", option, def);
1003             }
1004
1005             if(enabled) {
1006                 char *s = mallocz(dirlen + strlen(de->d_name) + 2);
1007                 strcpy(s, this);
1008                 strcat(s, "/");
1009                 strcat(s, de->d_name);
1010                 int ret2 = find_dir_in_subdirs(base, s, callback);
1011                 if(ret2 > 0) ret += ret2;
1012                 freez(s);
1013             }
1014         }
1015     }
1016
1017     closedir(dir);
1018     return ret;
1019 }
1020
1021 static inline void mark_all_cgroups_as_not_available() {
1022     debug(D_CGROUP, "marking all cgroups as not available");
1023
1024     struct cgroup *cg;
1025
1026     // mark all as not available
1027     for(cg = cgroup_root; cg ; cg = cg->next) {
1028         cg->available = 0;
1029     }
1030 }
1031
1032 static inline void cleanup_all_cgroups() {
1033     struct cgroup *cg = cgroup_root, *last = NULL;
1034
1035     for(; cg ;) {
1036         if(!cg->available) {
1037             // enable the first duplicate cgroup
1038             {
1039                 struct cgroup *t;
1040                 for(t = cgroup_root; t ; t = t->next) {
1041                     if(t != cg && t->available && !t->enabled && t->options & CGROUP_OPTIONS_DISABLED_DUPLICATE && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
1042                         debug(D_CGROUP, "Enabling duplicate of cgroup '%s' with id '%s', because the original with id '%s' stopped.", t->chart_id, t->id, cg->id);
1043                         t->enabled = 1;
1044                         t->options &= ~CGROUP_OPTIONS_DISABLED_DUPLICATE;
1045                         break;
1046                     }
1047                 }
1048             }
1049
1050             if(!last)
1051                 cgroup_root = cg->next;
1052             else
1053                 last->next = cg->next;
1054
1055             cgroup_free(cg);
1056
1057             if(!last)
1058                 cg = cgroup_root;
1059             else
1060                 cg = last->next;
1061         }
1062         else {
1063             last = cg;
1064             cg = cg->next;
1065         }
1066     }
1067 }
1068
1069 static inline void find_all_cgroups() {
1070     debug(D_CGROUP, "searching for cgroups");
1071
1072     mark_all_cgroups_as_not_available();
1073
1074     if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage) {
1075         if(find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir) == -1) {
1076             cgroup_enable_cpuacct_stat =
1077             cgroup_enable_cpuacct_usage = CONFIG_ONDEMAND_NO;
1078             error("disabled CGROUP cpu statistics.");
1079         }
1080     }
1081
1082     if(cgroup_enable_blkio_io || cgroup_enable_blkio_ops || cgroup_enable_blkio_throttle_io || cgroup_enable_blkio_throttle_ops || cgroup_enable_blkio_merged_ops || cgroup_enable_blkio_queued_ops) {
1083         if(find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir) == -1) {
1084             cgroup_enable_blkio_io =
1085             cgroup_enable_blkio_ops =
1086             cgroup_enable_blkio_throttle_io =
1087             cgroup_enable_blkio_throttle_ops =
1088             cgroup_enable_blkio_merged_ops =
1089             cgroup_enable_blkio_queued_ops = CONFIG_ONDEMAND_NO;
1090             error("disabled CGROUP blkio statistics.");
1091         }
1092     }
1093
1094     if(cgroup_enable_memory || cgroup_enable_detailed_memory || cgroup_enable_swap || cgroup_enable_memory_failcnt) {
1095         if(find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir) == -1) {
1096             cgroup_enable_memory =
1097             cgroup_enable_detailed_memory =
1098             cgroup_enable_swap =
1099             cgroup_enable_memory_failcnt = CONFIG_ONDEMAND_NO;
1100             error("disabled CGROUP memory statistics.");
1101         }
1102     }
1103
1104     if(cgroup_search_in_devices) {
1105         if(find_dir_in_subdirs(cgroup_devices_base, NULL, found_subdir_in_dir) == -1) {
1106             cgroup_search_in_devices = 0;
1107             error("disabled CGROUP devices statistics.");
1108         }
1109     }
1110
1111     // remove any non-existing cgroups
1112     cleanup_all_cgroups();
1113
1114     struct cgroup *cg;
1115     struct stat buf;
1116     for(cg = cgroup_root; cg ; cg = cg->next) {
1117         // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
1118
1119         if(unlikely(!cg->available))
1120             continue;
1121
1122         debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id);
1123
1124         // check for newly added cgroups
1125         // and update the filenames they read
1126         char filename[FILENAME_MAX + 1];
1127         if(unlikely(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename)) {
1128             snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
1129             if(likely(stat(filename, &buf) != -1)) {
1130                 cg->cpuacct_stat.filename = strdupz(filename);
1131                 cg->cpuacct_stat.enabled = cgroup_enable_cpuacct_stat;
1132                 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
1133             }
1134             else
1135                 debug(D_CGROUP, "cpuacct.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1136         }
1137
1138         if(unlikely(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename && !(cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE))) {
1139             snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
1140             if(likely(stat(filename, &buf) != -1)) {
1141                 cg->cpuacct_usage.filename = strdupz(filename);
1142                 cg->cpuacct_usage.enabled = cgroup_enable_cpuacct_usage;
1143                 debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename);
1144             }
1145             else
1146                 debug(D_CGROUP, "cpuacct.usage_percpu file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1147         }
1148
1149         if(unlikely((cgroup_enable_detailed_memory || cgroup_used_memory_without_cache) && !cg->memory.filename_detailed && (cgroup_used_memory_without_cache || cgroup_enable_systemd_services_detailed_memory || !(cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)))) {
1150             snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
1151             if(likely(stat(filename, &buf) != -1)) {
1152                 cg->memory.filename_detailed = strdupz(filename);
1153                 cg->memory.enabled_detailed = (cgroup_enable_detailed_memory == CONFIG_ONDEMAND_YES)?CONFIG_ONDEMAND_YES:CONFIG_ONDEMAND_ONDEMAND;
1154                 debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_detailed);
1155             }
1156             else
1157                 debug(D_CGROUP, "memory.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1158         }
1159
1160         if(unlikely(cgroup_enable_memory && !cg->memory.filename_usage_in_bytes)) {
1161             snprintfz(filename, FILENAME_MAX, "%s%s/memory.usage_in_bytes", cgroup_memory_base, cg->id);
1162             if(likely(stat(filename, &buf) != -1)) {
1163                 cg->memory.filename_usage_in_bytes = strdupz(filename);
1164                 cg->memory.enabled_usage_in_bytes = cgroup_enable_memory;
1165                 debug(D_CGROUP, "memory.usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_usage_in_bytes);
1166             }
1167             else
1168                 debug(D_CGROUP, "memory.usage_in_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1169         }
1170
1171         if(unlikely(cgroup_enable_swap && !cg->memory.filename_msw_usage_in_bytes)) {
1172             snprintfz(filename, FILENAME_MAX, "%s%s/memory.msw_usage_in_bytes", cgroup_memory_base, cg->id);
1173             if(likely(stat(filename, &buf) != -1)) {
1174                 cg->memory.filename_msw_usage_in_bytes = strdupz(filename);
1175                 cg->memory.enabled_msw_usage_in_bytes = cgroup_enable_swap;
1176                 debug(D_CGROUP, "memory.msw_usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_msw_usage_in_bytes);
1177             }
1178             else
1179                 debug(D_CGROUP, "memory.msw_usage_in_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1180         }
1181
1182         if(unlikely(cgroup_enable_memory_failcnt && !cg->memory.filename_failcnt)) {
1183             snprintfz(filename, FILENAME_MAX, "%s%s/memory.failcnt", cgroup_memory_base, cg->id);
1184             if(likely(stat(filename, &buf) != -1)) {
1185                 cg->memory.filename_failcnt = strdupz(filename);
1186                 cg->memory.enabled_failcnt = cgroup_enable_memory_failcnt;
1187                 debug(D_CGROUP, "memory.failcnt filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_failcnt);
1188             }
1189             else
1190                 debug(D_CGROUP, "memory.failcnt file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1191         }
1192
1193         if(unlikely(cgroup_enable_blkio_io && !cg->io_service_bytes.filename)) {
1194             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
1195             if(likely(stat(filename, &buf) != -1)) {
1196                 cg->io_service_bytes.filename = strdupz(filename);
1197                 cg->io_service_bytes.enabled = cgroup_enable_blkio_io;
1198                 debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename);
1199             }
1200             else
1201                 debug(D_CGROUP, "io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1202         }
1203
1204         if(unlikely(cgroup_enable_blkio_ops && !cg->io_serviced.filename)) {
1205             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
1206             if(likely(stat(filename, &buf) != -1)) {
1207                 cg->io_serviced.filename = strdupz(filename);
1208                 cg->io_serviced.enabled = cgroup_enable_blkio_ops;
1209                 debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename);
1210             }
1211             else
1212                 debug(D_CGROUP, "io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1213         }
1214
1215         if(unlikely(cgroup_enable_blkio_throttle_io && !cg->throttle_io_service_bytes.filename)) {
1216             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
1217             if(likely(stat(filename, &buf) != -1)) {
1218                 cg->throttle_io_service_bytes.filename = strdupz(filename);
1219                 cg->throttle_io_service_bytes.enabled = cgroup_enable_blkio_throttle_io;
1220                 debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename);
1221             }
1222             else
1223                 debug(D_CGROUP, "throttle_io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1224         }
1225
1226         if(unlikely(cgroup_enable_blkio_throttle_ops && !cg->throttle_io_serviced.filename)) {
1227             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
1228             if(likely(stat(filename, &buf) != -1)) {
1229                 cg->throttle_io_serviced.filename = strdupz(filename);
1230                 cg->throttle_io_serviced.enabled = cgroup_enable_blkio_throttle_ops;
1231                 debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename);
1232             }
1233             else
1234                 debug(D_CGROUP, "throttle_io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1235         }
1236
1237         if(unlikely(cgroup_enable_blkio_merged_ops && !cg->io_merged.filename)) {
1238             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
1239             if(likely(stat(filename, &buf) != -1)) {
1240                 cg->io_merged.filename = strdupz(filename);
1241                 cg->io_merged.enabled = cgroup_enable_blkio_merged_ops;
1242                 debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename);
1243             }
1244             else
1245                 debug(D_CGROUP, "io_merged file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1246         }
1247
1248         if(unlikely(cgroup_enable_blkio_queued_ops && !cg->io_queued.filename)) {
1249             snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
1250             if(likely(stat(filename, &buf) != -1)) {
1251                 cg->io_queued.filename = strdupz(filename);
1252                 cg->io_queued.enabled = cgroup_enable_blkio_queued_ops;
1253                 debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename);
1254             }
1255             else
1256                 debug(D_CGROUP, "io_queued file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1257         }
1258     }
1259
1260     debug(D_CGROUP, "done searching for cgroups");
1261     return;
1262 }
1263
1264 // ----------------------------------------------------------------------------
1265 // generate charts
1266
1267 #define CHART_TITLE_MAX 300
1268
1269 void update_services_charts(int update_every,
1270         int do_cpu,
1271         int do_mem_usage,
1272         int do_mem_detailed,
1273         int do_mem_failcnt,
1274         int do_swap_usage,
1275         int do_io,
1276         int do_io_ops,
1277         int do_throttle_io,
1278         int do_throttle_ops,
1279         int do_queued_ops,
1280         int do_merged_ops
1281 ) {
1282     static RRDSET
1283         *st_cpu = NULL,
1284         *st_mem_usage = NULL,
1285         *st_mem_failcnt = NULL,
1286         *st_swap_usage = NULL,
1287
1288         *st_mem_detailed_cache = NULL,
1289         *st_mem_detailed_rss = NULL,
1290         *st_mem_detailed_mapped = NULL,
1291         *st_mem_detailed_writeback = NULL,
1292         *st_mem_detailed_pgfault = NULL,
1293         *st_mem_detailed_pgmajfault = NULL,
1294         *st_mem_detailed_pgpgin = NULL,
1295         *st_mem_detailed_pgpgout = NULL,
1296
1297         *st_io_read = NULL,
1298         *st_io_serviced_read = NULL,
1299         *st_throttle_io_read = NULL,
1300         *st_throttle_ops_read = NULL,
1301         *st_queued_ops_read = NULL,
1302         *st_merged_ops_read = NULL,
1303
1304         *st_io_write = NULL,
1305         *st_io_serviced_write = NULL,
1306         *st_throttle_io_write = NULL,
1307         *st_throttle_ops_write = NULL,
1308         *st_queued_ops_write = NULL,
1309         *st_merged_ops_write = NULL;
1310
1311     // create the charts
1312
1313     if(likely(do_cpu)) {
1314         if(unlikely(!st_cpu)) {
1315             char title[CHART_TITLE_MAX + 1];
1316
1317             st_cpu = rrdset_find_bytype("services", "cpu");
1318             if(likely(!st_cpu)) {
1319                 snprintfz(title, CHART_TITLE_MAX, "Systemd Services CPU utilization (%d%% = %d core%s)", (processors * 100), processors, (processors > 1) ? "s" : "");
1320                 st_cpu = rrdset_create("services", "cpu", NULL, "cpu", "services.cpu", title, "%", CHART_PRIORITY_SYSTEMD_SERVICES, update_every, RRDSET_TYPE_STACKED);
1321             }
1322         }
1323         else
1324             rrdset_next(st_cpu);
1325     }
1326
1327     if(likely(do_mem_usage)) {
1328         if(unlikely(!st_mem_usage)) {
1329             st_mem_usage = rrdset_find_bytype("services", "mem_usage");
1330             if(likely(!st_mem_usage))
1331                 st_mem_usage = rrdset_create("services", "mem_usage", NULL, "mem", "services.mem_usage", (cgroup_used_memory_without_cache)?"Systemd Services Used Memory without Cache":"Systemd Services Used Memory", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 10, update_every, RRDSET_TYPE_STACKED);
1332         }
1333         else
1334             rrdset_next(st_mem_usage);
1335     }
1336
1337     if(likely(do_mem_detailed)) {
1338         if(unlikely(!st_mem_detailed_rss)) {
1339             st_mem_detailed_rss = rrdset_find_bytype("services", "mem_rss");
1340             if(likely(!st_mem_detailed_rss))
1341                 st_mem_detailed_rss = rrdset_create("services", "mem_rss", NULL, "mem", "services.mem_rss", "Systemd Services RSS Memory", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 20, update_every, RRDSET_TYPE_STACKED);
1342         }
1343         else
1344             rrdset_next(st_mem_detailed_rss);
1345
1346         if(unlikely(!st_mem_detailed_mapped)) {
1347             st_mem_detailed_mapped = rrdset_find_bytype("services", "mem_mapped");
1348             if(likely(!st_mem_detailed_mapped))
1349                 st_mem_detailed_mapped = rrdset_create("services", "mem_mapped", NULL, "mem", "services.mem_mapped", "Systemd Services Mapped Memory", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 30, update_every, RRDSET_TYPE_STACKED);
1350         }
1351         else
1352             rrdset_next(st_mem_detailed_mapped);
1353
1354         if(unlikely(!st_mem_detailed_cache)) {
1355             st_mem_detailed_cache = rrdset_find_bytype("services", "mem_cache");
1356             if(likely(!st_mem_detailed_cache))
1357                 st_mem_detailed_cache = rrdset_create("services", "mem_cache", NULL, "mem", "services.mem_cache", "Systemd Services Cache Memory", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 40, update_every, RRDSET_TYPE_STACKED);
1358         }
1359         else
1360             rrdset_next(st_mem_detailed_cache);
1361
1362         if(unlikely(!st_mem_detailed_writeback)) {
1363             st_mem_detailed_writeback = rrdset_find_bytype("services", "mem_writeback");
1364             if(likely(!st_mem_detailed_writeback))
1365                 st_mem_detailed_writeback = rrdset_create("services", "mem_writeback", NULL, "mem", "services.mem_writeback", "Systemd Services Writeback Memory", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 50, update_every, RRDSET_TYPE_STACKED);
1366         }
1367         else
1368             rrdset_next(st_mem_detailed_writeback);
1369
1370         if(unlikely(!st_mem_detailed_pgfault)) {
1371             st_mem_detailed_pgfault = rrdset_find_bytype("services", "mem_pgfault");
1372             if(likely(!st_mem_detailed_pgfault))
1373                 st_mem_detailed_pgfault = rrdset_create("services", "mem_pgfault", NULL, "mem", "services.mem_pgfault", "Systemd Services Memory Minor Page Faults", "MB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 60, update_every, RRDSET_TYPE_STACKED);
1374         }
1375         else
1376             rrdset_next(st_mem_detailed_pgfault);
1377
1378         if(unlikely(!st_mem_detailed_pgmajfault)) {
1379             st_mem_detailed_pgmajfault = rrdset_find_bytype("services", "mem_pgmajfault");
1380             if(likely(!st_mem_detailed_pgmajfault))
1381                 st_mem_detailed_pgmajfault = rrdset_create("services", "mem_pgmajfault", NULL, "mem", "services.mem_pgmajfault", "Systemd Services Memory Major Page Faults", "MB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 70, update_every, RRDSET_TYPE_STACKED);
1382         }
1383         else
1384             rrdset_next(st_mem_detailed_pgmajfault);
1385
1386         if(unlikely(!st_mem_detailed_pgpgin)) {
1387             st_mem_detailed_pgpgin = rrdset_find_bytype("services", "mem_pgpgin");
1388             if(likely(!st_mem_detailed_pgpgin))
1389                 st_mem_detailed_pgpgin = rrdset_create("services", "mem_pgpgin", NULL, "mem", "services.mem_pgpgin", "Systemd Services Memory Charging Activity", "MB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 80, update_every, RRDSET_TYPE_STACKED);
1390         }
1391         else
1392             rrdset_next(st_mem_detailed_pgpgin);
1393
1394         if(unlikely(!st_mem_detailed_pgpgout)) {
1395             st_mem_detailed_pgpgout = rrdset_find_bytype("services", "mem_pgpgout");
1396             if(likely(!st_mem_detailed_pgpgout))
1397                 st_mem_detailed_pgpgout = rrdset_create("services", "mem_pgpgout", NULL, "mem", "services.mem_pgpgout", "Systemd Services Memory Uncharging Activity", "MB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 90, update_every, RRDSET_TYPE_STACKED);
1398         }
1399         else
1400             rrdset_next(st_mem_detailed_pgpgout);
1401     }
1402
1403     if(likely(do_mem_failcnt)) {
1404         if(unlikely(!st_mem_failcnt)) {
1405             st_mem_failcnt = rrdset_find_bytype("services", "mem_failcnt");
1406             if(likely(!st_mem_failcnt))
1407                 st_mem_failcnt = rrdset_create("services", "mem_failcnt", NULL, "mem", "services.mem_failcnt", "Systemd Services Memory Limit Failures", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 110, update_every, RRDSET_TYPE_STACKED);
1408         }
1409         else
1410             rrdset_next(st_mem_failcnt);
1411     }
1412
1413     if(likely(do_swap_usage)) {
1414         if(unlikely(!st_swap_usage)) {
1415             st_swap_usage = rrdset_find_bytype("services", "swap_usage");
1416             if(likely(!st_swap_usage))
1417                 st_swap_usage = rrdset_create("services", "swap_usage", NULL, "swap", "services.swap_usage", "Systemd Services Swap Memory Used", "MB", CHART_PRIORITY_SYSTEMD_SERVICES + 100, update_every, RRDSET_TYPE_STACKED);
1418         }
1419         else
1420             rrdset_next(st_swap_usage);
1421     }
1422
1423     if(likely(do_io)) {
1424         if(unlikely(!st_io_read)) {
1425             st_io_read = rrdset_find_bytype("services", "io_read");
1426             if(likely(!st_io_read))
1427                 st_io_read = rrdset_create("services", "io_read", NULL, "disk", "services.io_read", "Systemd Services Disk Read Bandwidth", "KB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 120, update_every, RRDSET_TYPE_STACKED);
1428         }
1429         else
1430             rrdset_next(st_io_read);
1431
1432         if(unlikely(!st_io_write)) {
1433             st_io_write = rrdset_find_bytype("services", "io_write");
1434             if(likely(!st_io_write))
1435                 st_io_write = rrdset_create("services", "io_write", NULL, "disk", "services.io_write", "Systemd Services Disk Write Bandwidth", "KB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 130, update_every, RRDSET_TYPE_STACKED);
1436         }
1437         else
1438             rrdset_next(st_io_write);
1439     }
1440
1441     if(likely(do_io_ops)) {
1442         if(unlikely(!st_io_serviced_read)) {
1443             st_io_serviced_read = rrdset_find_bytype("services", "io_ops_read");
1444             if(likely(!st_io_serviced_read))
1445                 st_io_serviced_read = rrdset_create("services", "io_ops_read", NULL, "disk", "services.io_ops_read", "Systemd Services Disk Read Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 140, update_every, RRDSET_TYPE_STACKED);
1446         }
1447         else
1448             rrdset_next(st_io_serviced_read);
1449
1450         if(unlikely(!st_io_serviced_write)) {
1451             st_io_serviced_write = rrdset_find_bytype("services", "io_ops_write");
1452             if(likely(!st_io_serviced_write))
1453                 st_io_serviced_write = rrdset_create("services", "io_ops_write", NULL, "disk", "services.io_ops_write", "Systemd Services Disk Write Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 150, update_every, RRDSET_TYPE_STACKED);
1454         }
1455         else
1456             rrdset_next(st_io_serviced_write);
1457     }
1458
1459     if(likely(do_throttle_io)) {
1460         if(unlikely(!st_throttle_io_read)) {
1461             st_throttle_io_read = rrdset_find_bytype("services", "throttle_io_read");
1462             if(likely(!st_throttle_io_read))
1463                 st_throttle_io_read = rrdset_create("services", "throttle_io_read", NULL, "disk", "services.throttle_io_read", "Systemd Services Throttle Disk Read Bandwidth", "KB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 160, update_every, RRDSET_TYPE_STACKED);
1464         }
1465         else
1466             rrdset_next(st_throttle_io_read);
1467
1468         if(unlikely(!st_throttle_io_write)) {
1469             st_throttle_io_write = rrdset_find_bytype("services", "throttle_io_write");
1470             if(likely(!st_throttle_io_write))
1471                 st_throttle_io_write = rrdset_create("services", "throttle_io_write", NULL, "disk", "services.throttle_io_write", "Systemd Services Throttle Disk Write Bandwidth", "KB/s", CHART_PRIORITY_SYSTEMD_SERVICES + 170, update_every, RRDSET_TYPE_STACKED);
1472         }
1473         else
1474             rrdset_next(st_throttle_io_write);
1475     }
1476
1477     if(likely(do_throttle_ops)) {
1478         if(unlikely(!st_throttle_ops_read)) {
1479             st_throttle_ops_read = rrdset_find_bytype("services", "throttle_io_ops_read");
1480             if(likely(!st_throttle_ops_read))
1481                 st_throttle_ops_read = rrdset_create("services", "throttle_io_ops_read", NULL, "disk", "services.throttle_io_ops_read", "Systemd Services Throttle Disk Read Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 180, update_every, RRDSET_TYPE_STACKED);
1482         }
1483         else
1484             rrdset_next(st_throttle_ops_read);
1485
1486         if(unlikely(!st_throttle_ops_write)) {
1487             st_throttle_ops_write = rrdset_find_bytype("services", "throttle_io_ops_write");
1488             if(likely(!st_throttle_ops_write))
1489                 st_throttle_ops_write = rrdset_create("services", "throttle_io_ops_write", NULL, "disk", "services.throttle_io_ops_write", "Systemd Services Throttle Disk Write Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 190, update_every, RRDSET_TYPE_STACKED);
1490         }
1491         else
1492             rrdset_next(st_throttle_ops_write);
1493     }
1494
1495     if(likely(do_queued_ops)) {
1496         if(unlikely(!st_queued_ops_read)) {
1497             st_queued_ops_read = rrdset_find_bytype("services", "queued_io_ops_read");
1498             if(likely(!st_queued_ops_read))
1499                 st_queued_ops_read = rrdset_create("services", "queued_io_ops_read", NULL, "disk", "services.queued_io_ops_read", "Systemd Services Queued Disk Read Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 200, update_every, RRDSET_TYPE_STACKED);
1500         }
1501         else
1502             rrdset_next(st_queued_ops_read);
1503
1504         if(unlikely(!st_queued_ops_write)) {
1505             st_queued_ops_write = rrdset_find_bytype("services", "queued_io_ops_write");
1506             if(likely(!st_queued_ops_write))
1507                 st_queued_ops_write = rrdset_create("services", "queued_io_ops_write", NULL, "disk", "services.queued_io_ops_write", "Systemd Services Queued Disk Write Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 210, update_every, RRDSET_TYPE_STACKED);
1508         }
1509         else
1510             rrdset_next(st_queued_ops_write);
1511     }
1512
1513     if(likely(do_merged_ops)) {
1514         if(unlikely(!st_merged_ops_read)) {
1515             st_merged_ops_read = rrdset_find_bytype("services", "merged_io_ops_read");
1516             if(likely(!st_merged_ops_read))
1517                 st_merged_ops_read = rrdset_create("services", "merged_io_ops_read", NULL, "disk", "services.merged_io_ops_read", "Systemd Services Merged Disk Read Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 220, update_every, RRDSET_TYPE_STACKED);
1518         }
1519         else
1520             rrdset_next(st_merged_ops_read);
1521
1522         if(unlikely(!st_merged_ops_write)) {
1523             st_merged_ops_write = rrdset_find_bytype("services", "merged_io_ops_write");
1524             if(likely(!st_merged_ops_write))
1525                 st_merged_ops_write = rrdset_create("services", "merged_io_ops_write", NULL, "disk", "services.merged_io_ops_write", "Systemd Services Merged Disk Write Operations", "operations/s", CHART_PRIORITY_SYSTEMD_SERVICES + 230, update_every, RRDSET_TYPE_STACKED);
1526         }
1527         else
1528             rrdset_next(st_merged_ops_write);
1529     }
1530
1531     // update the values
1532     struct cgroup *cg;
1533     for(cg = cgroup_root; cg ; cg = cg->next) {
1534         if(unlikely(!cg->available || !cg->enabled || !(cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)))
1535             continue;
1536
1537         if(likely(do_cpu && cg->cpuacct_stat.updated)) {
1538             if(unlikely(!cg->rd_cpu))
1539                 cg->rd_cpu = rrddim_add(st_cpu, cg->chart_id, cg->chart_title, 100, hz, RRDDIM_ALGORITHM_INCREMENTAL);
1540
1541             rrddim_set_by_pointer(st_cpu, cg->rd_cpu, cg->cpuacct_stat.user + cg->cpuacct_stat.system);
1542         }
1543
1544         if(likely(do_mem_usage && cg->memory.updated_usage_in_bytes)) {
1545             if(unlikely(!cg->rd_mem_usage))
1546                 cg->rd_mem_usage = rrddim_add(st_mem_usage, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1547
1548             rrddim_set_by_pointer(st_mem_usage, cg->rd_mem_usage, cg->memory.usage_in_bytes - ((cgroup_used_memory_without_cache)?cg->memory.cache:0));
1549         }
1550
1551         if(likely(do_mem_detailed && cg->memory.updated_detailed)) {
1552             if(unlikely(!cg->rd_mem_detailed_rss))
1553                 cg->rd_mem_detailed_rss = rrddim_add(st_mem_detailed_rss, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1554             rrddim_set_by_pointer(st_mem_detailed_rss, cg->rd_mem_detailed_rss, cg->memory.rss + cg->memory.rss_huge);
1555
1556             if(unlikely(!cg->rd_mem_detailed_mapped))
1557                 cg->rd_mem_detailed_mapped = rrddim_add(st_mem_detailed_mapped, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1558             rrddim_set_by_pointer(st_mem_detailed_mapped, cg->rd_mem_detailed_mapped, cg->memory.mapped_file);
1559
1560             if(unlikely(!cg->rd_mem_detailed_cache))
1561                 cg->rd_mem_detailed_cache = rrddim_add(st_mem_detailed_cache, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1562             rrddim_set_by_pointer(st_mem_detailed_cache, cg->rd_mem_detailed_cache, cg->memory.cache);
1563
1564             if(unlikely(!cg->rd_mem_detailed_writeback))
1565                 cg->rd_mem_detailed_writeback = rrddim_add(st_mem_detailed_writeback, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1566             rrddim_set_by_pointer(st_mem_detailed_writeback, cg->rd_mem_detailed_writeback, cg->memory.writeback);
1567
1568             if(unlikely(!cg->rd_mem_detailed_pgfault))
1569                 cg->rd_mem_detailed_pgfault = rrddim_add(st_mem_detailed_pgfault, cg->chart_id, cg->chart_title, system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1570             rrddim_set_by_pointer(st_mem_detailed_pgfault, cg->rd_mem_detailed_pgfault, cg->memory.pgfault);
1571
1572             if(unlikely(!cg->rd_mem_detailed_pgmajfault))
1573                 cg->rd_mem_detailed_pgmajfault = rrddim_add(st_mem_detailed_pgmajfault, cg->chart_id, cg->chart_title, system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1574             rrddim_set_by_pointer(st_mem_detailed_pgmajfault, cg->rd_mem_detailed_pgmajfault, cg->memory.pgmajfault);
1575
1576             if(unlikely(!cg->rd_mem_detailed_pgpgin))
1577                 cg->rd_mem_detailed_pgpgin = rrddim_add(st_mem_detailed_pgpgin, cg->chart_id, cg->chart_title, system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1578             rrddim_set_by_pointer(st_mem_detailed_pgpgin, cg->rd_mem_detailed_pgpgin, cg->memory.pgpgin);
1579
1580             if(unlikely(!cg->rd_mem_detailed_pgpgout))
1581                 cg->rd_mem_detailed_pgpgout = rrddim_add(st_mem_detailed_pgpgout, cg->chart_id, cg->chart_title, system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1582             rrddim_set_by_pointer(st_mem_detailed_pgpgout, cg->rd_mem_detailed_pgpgout, cg->memory.pgpgout);
1583         }
1584
1585         if(likely(do_mem_failcnt && cg->memory.updated_failcnt)) {
1586             if(unlikely(!cg->rd_mem_failcnt))
1587                 cg->rd_mem_failcnt = rrddim_add(st_mem_failcnt, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1588
1589             rrddim_set_by_pointer(st_mem_failcnt, cg->rd_mem_failcnt, cg->memory.failcnt);
1590         }
1591
1592         if(likely(do_swap_usage && cg->memory.updated_msw_usage_in_bytes)) {
1593             if(unlikely(!cg->rd_swap_usage))
1594                 cg->rd_swap_usage = rrddim_add(st_swap_usage, cg->chart_id, cg->chart_title, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1595
1596             rrddim_set_by_pointer(st_swap_usage, cg->rd_swap_usage, cg->memory.msw_usage_in_bytes);
1597         }
1598
1599         if(likely(do_io && cg->io_service_bytes.updated)) {
1600             if(unlikely(!cg->rd_io_service_bytes_read))
1601                 cg->rd_io_service_bytes_read = rrddim_add(st_io_read, cg->chart_id, cg->chart_title, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1602
1603             rrddim_set_by_pointer(st_io_read, cg->rd_io_service_bytes_read, cg->io_service_bytes.Read);
1604
1605             if(unlikely(!cg->rd_io_service_bytes_write))
1606                 cg->rd_io_service_bytes_write = rrddim_add(st_io_write, cg->chart_id, cg->chart_title, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1607
1608             rrddim_set_by_pointer(st_io_write, cg->rd_io_service_bytes_write, cg->io_service_bytes.Write);
1609         }
1610
1611         if(likely(do_io_ops && cg->io_serviced.updated)) {
1612             if(unlikely(!cg->rd_io_serviced_read))
1613                 cg->rd_io_serviced_read = rrddim_add(st_io_serviced_read, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1614
1615             rrddim_set_by_pointer(st_io_serviced_read, cg->rd_io_serviced_read, cg->io_serviced.Read);
1616
1617             if(unlikely(!cg->rd_io_serviced_write))
1618                 cg->rd_io_serviced_write = rrddim_add(st_io_serviced_write, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1619
1620             rrddim_set_by_pointer(st_io_serviced_write, cg->rd_io_serviced_write, cg->io_serviced.Write);
1621         }
1622
1623         if(likely(do_throttle_io && cg->throttle_io_service_bytes.updated)) {
1624             if(unlikely(!cg->rd_throttle_io_read))
1625                 cg->rd_throttle_io_read = rrddim_add(st_throttle_io_read, cg->chart_id, cg->chart_title, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1626
1627             rrddim_set_by_pointer(st_throttle_io_read, cg->rd_throttle_io_read, cg->throttle_io_service_bytes.Read);
1628
1629             if(unlikely(!cg->rd_throttle_io_write))
1630                 cg->rd_throttle_io_write = rrddim_add(st_throttle_io_write, cg->chart_id, cg->chart_title, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1631
1632             rrddim_set_by_pointer(st_throttle_io_write, cg->rd_throttle_io_write, cg->throttle_io_service_bytes.Write);
1633         }
1634
1635         if(likely(do_throttle_ops && cg->throttle_io_serviced.updated)) {
1636             if(unlikely(!cg->rd_throttle_io_serviced_read))
1637                 cg->rd_throttle_io_serviced_read = rrddim_add(st_throttle_ops_read, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1638
1639             rrddim_set_by_pointer(st_throttle_ops_read, cg->rd_throttle_io_serviced_read, cg->throttle_io_serviced.Read);
1640
1641             if(unlikely(!cg->rd_throttle_io_serviced_write))
1642                 cg->rd_throttle_io_serviced_write = rrddim_add(st_throttle_ops_write, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1643
1644             rrddim_set_by_pointer(st_throttle_ops_write, cg->rd_throttle_io_serviced_write, cg->throttle_io_serviced.Write);
1645         }
1646
1647         if(likely(do_queued_ops && cg->io_queued.updated)) {
1648             if(unlikely(!cg->rd_io_queued_read))
1649                 cg->rd_io_queued_read = rrddim_add(st_queued_ops_read, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1650
1651             rrddim_set_by_pointer(st_queued_ops_read, cg->rd_io_queued_read, cg->io_queued.Read);
1652
1653             if(unlikely(!cg->rd_io_queued_write))
1654                 cg->rd_io_queued_write = rrddim_add(st_queued_ops_write, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1655
1656             rrddim_set_by_pointer(st_queued_ops_write, cg->rd_io_queued_write, cg->io_queued.Write);
1657         }
1658
1659         if(likely(do_merged_ops && cg->io_merged.updated)) {
1660             if(unlikely(!cg->rd_io_merged_read))
1661                 cg->rd_io_merged_read = rrddim_add(st_merged_ops_read, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1662
1663             rrddim_set_by_pointer(st_merged_ops_read, cg->rd_io_merged_read, cg->io_merged.Read);
1664
1665             if(unlikely(!cg->rd_io_merged_write))
1666                 cg->rd_io_merged_write = rrddim_add(st_merged_ops_write, cg->chart_id, cg->chart_title, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1667
1668             rrddim_set_by_pointer(st_merged_ops_write, cg->rd_io_merged_write, cg->io_merged.Write);
1669         }
1670     }
1671
1672     // complete the iteration
1673     if(likely(do_cpu))
1674         rrdset_done(st_cpu);
1675
1676     if(likely(do_mem_usage))
1677         rrdset_done(st_mem_usage);
1678
1679     if(unlikely(do_mem_detailed)) {
1680         rrdset_done(st_mem_detailed_cache);
1681         rrdset_done(st_mem_detailed_rss);
1682         rrdset_done(st_mem_detailed_mapped);
1683         rrdset_done(st_mem_detailed_writeback);
1684         rrdset_done(st_mem_detailed_pgfault);
1685         rrdset_done(st_mem_detailed_pgmajfault);
1686         rrdset_done(st_mem_detailed_pgpgin);
1687         rrdset_done(st_mem_detailed_pgpgout);
1688     }
1689
1690     if(likely(do_mem_failcnt))
1691         rrdset_done(st_mem_failcnt);
1692
1693     if(likely(do_swap_usage))
1694         rrdset_done(st_swap_usage);
1695
1696     if(likely(do_io)) {
1697         rrdset_done(st_io_read);
1698         rrdset_done(st_io_write);
1699     }
1700
1701     if(likely(do_io_ops)) {
1702         rrdset_done(st_io_serviced_read);
1703         rrdset_done(st_io_serviced_write);
1704     }
1705
1706     if(likely(do_throttle_io)) {
1707         rrdset_done(st_throttle_io_read);
1708         rrdset_done(st_throttle_io_write);
1709     }
1710
1711     if(likely(do_throttle_ops)) {
1712         rrdset_done(st_throttle_ops_read);
1713         rrdset_done(st_throttle_ops_write);
1714     }
1715
1716     if(likely(do_queued_ops)) {
1717         rrdset_done(st_queued_ops_read);
1718         rrdset_done(st_queued_ops_write);
1719     }
1720
1721     if(likely(do_merged_ops)) {
1722         rrdset_done(st_merged_ops_read);
1723         rrdset_done(st_merged_ops_write);
1724     }
1725 }
1726
1727 static inline char *cgroup_chart_type(char *buffer, const char *id, size_t len) {
1728     if(buffer[0]) return buffer;
1729
1730     if(id[0] == '\0' || (id[0] == '/' && id[1] == '\0'))
1731         strncpy(buffer, "cgroup_root", len);
1732     else
1733         snprintfz(buffer, len, "cgroup_%s", id);
1734
1735     netdata_fix_chart_id(buffer);
1736     return buffer;
1737 }
1738
1739 void update_cgroup_charts(int update_every) {
1740     debug(D_CGROUP, "updating cgroups charts");
1741
1742     char type[RRD_ID_LENGTH_MAX + 1];
1743     char title[CHART_TITLE_MAX + 1];
1744
1745     int services_do_cpu = 0,
1746             services_do_mem_usage = 0,
1747             services_do_mem_detailed = 0,
1748             services_do_mem_failcnt = 0,
1749             services_do_swap_usage = 0,
1750             services_do_io = 0,
1751             services_do_io_ops = 0,
1752             services_do_throttle_io = 0,
1753             services_do_throttle_ops = 0,
1754             services_do_queued_ops = 0,
1755             services_do_merged_ops = 0;
1756
1757     struct cgroup *cg;
1758     for(cg = cgroup_root; cg ; cg = cg->next) {
1759         if(unlikely(!cg->available || !cg->enabled))
1760             continue;
1761
1762         if(likely(cgroup_enable_systemd_services && cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)) {
1763             if(cg->cpuacct_stat.updated && cg->cpuacct_stat.enabled == CONFIG_ONDEMAND_YES) services_do_cpu++;
1764
1765             if(cgroup_enable_systemd_services_detailed_memory && cg->memory.updated_detailed && cg->memory.enabled_detailed) services_do_mem_detailed++;
1766             if(cg->memory.updated_usage_in_bytes && cg->memory.enabled_usage_in_bytes == CONFIG_ONDEMAND_YES) services_do_mem_usage++;
1767             if(cg->memory.updated_failcnt && cg->memory.enabled_failcnt == CONFIG_ONDEMAND_YES) services_do_mem_failcnt++;
1768             if(cg->memory.updated_msw_usage_in_bytes && cg->memory.enabled_msw_usage_in_bytes == CONFIG_ONDEMAND_YES) services_do_swap_usage++;
1769
1770             if(cg->io_service_bytes.updated && cg->io_service_bytes.enabled == CONFIG_ONDEMAND_YES) services_do_io++;
1771             if(cg->io_serviced.updated && cg->io_serviced.enabled == CONFIG_ONDEMAND_YES) services_do_io_ops++;
1772             if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.enabled == CONFIG_ONDEMAND_YES) services_do_throttle_io++;
1773             if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.enabled == CONFIG_ONDEMAND_YES) services_do_throttle_ops++;
1774             if(cg->io_queued.updated && cg->io_queued.enabled == CONFIG_ONDEMAND_YES) services_do_queued_ops++;
1775             if(cg->io_merged.updated && cg->io_merged.enabled == CONFIG_ONDEMAND_YES) services_do_merged_ops++;
1776             continue;
1777         }
1778
1779         type[0] = '\0';
1780
1781         if(likely(cg->cpuacct_stat.updated && cg->cpuacct_stat.enabled == CONFIG_ONDEMAND_YES)) {
1782             if(unlikely(!cg->st_cpu)) {
1783                 cg->st_cpu = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "cpu");
1784                 if(likely(!cg->st_cpu)) {
1785                     snprintfz(title, CHART_TITLE_MAX, "CPU Usage (%d%% = %d core%s) for cgroup %s", (processors * 100), processors, (processors > 1) ? "s" : "", cg->chart_title);
1786                     cg->st_cpu = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", CHART_PRIORITY_CONTAINERS, update_every, RRDSET_TYPE_STACKED);
1787                 }
1788                 rrddim_add(cg->st_cpu, "user", NULL, 100, hz, RRDDIM_ALGORITHM_INCREMENTAL);
1789                 rrddim_add(cg->st_cpu, "system", NULL, 100, hz, RRDDIM_ALGORITHM_INCREMENTAL);
1790             }
1791             else
1792                 rrdset_next(cg->st_cpu);
1793
1794             rrddim_set(cg->st_cpu, "user", cg->cpuacct_stat.user);
1795             rrddim_set(cg->st_cpu, "system", cg->cpuacct_stat.system);
1796             rrdset_done(cg->st_cpu);
1797         }
1798
1799         if(likely(cg->cpuacct_usage.updated && cg->cpuacct_usage.enabled == CONFIG_ONDEMAND_YES)) {
1800             char id[RRD_ID_LENGTH_MAX + 1];
1801             unsigned int i;
1802
1803             if(unlikely(!cg->st_cpu_per_core)) {
1804                 cg->st_cpu_per_core = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "cpu_per_core");
1805                 if(likely(!cg->st_cpu_per_core)) {
1806                     snprintfz(title, CHART_TITLE_MAX, "CPU Usage (%d%% = %d core%s) Per Core for cgroup %s", (processors * 100), processors, (processors > 1) ? "s" : "", cg->chart_title);
1807                     cg->st_cpu_per_core = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", CHART_PRIORITY_CONTAINERS + 100, update_every, RRDSET_TYPE_STACKED);
1808                 }
1809                 for(i = 0; i < cg->cpuacct_usage.cpus; i++) {
1810                     snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1811                     rrddim_add(cg->st_cpu_per_core, id, NULL, 100, 1000000000, RRDDIM_ALGORITHM_INCREMENTAL);
1812                 }
1813             }
1814             else
1815                 rrdset_next(cg->st_cpu_per_core);
1816
1817             for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1818                 snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1819                 rrddim_set(cg->st_cpu_per_core, id, cg->cpuacct_usage.cpu_percpu[i]);
1820             }
1821             rrdset_done(cg->st_cpu_per_core);
1822         }
1823
1824         if(likely(cg->memory.updated_detailed && cg->memory.enabled_detailed == CONFIG_ONDEMAND_YES)) {
1825             if(unlikely(!cg->st_mem)) {
1826                 cg->st_mem = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem");
1827                 if(likely(!cg->st_mem)) {
1828                     snprintfz(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title);
1829                     cg->st_mem = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", CHART_PRIORITY_CONTAINERS + 210, update_every, RRDSET_TYPE_STACKED);
1830                 }
1831
1832                 rrddim_add(cg->st_mem, "cache", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1833                 rrddim_add(cg->st_mem, "rss", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1834                 if(cg->memory.detailed_has_swap)
1835                     rrddim_add(cg->st_mem, "swap", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1836                 rrddim_add(cg->st_mem, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1837                 rrddim_add(cg->st_mem, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1838             }
1839             else
1840                 rrdset_next(cg->st_mem);
1841
1842             rrddim_set(cg->st_mem, "cache", cg->memory.cache);
1843             rrddim_set(cg->st_mem, "rss", cg->memory.rss);
1844             if(cg->memory.detailed_has_swap)
1845                 rrddim_set(cg->st_mem, "swap", cg->memory.swap);
1846             rrddim_set(cg->st_mem, "rss_huge", cg->memory.rss_huge);
1847             rrddim_set(cg->st_mem, "mapped_file", cg->memory.mapped_file);
1848             rrdset_done(cg->st_mem);
1849
1850             if(unlikely(!cg->st_writeback)) {
1851                 cg->st_writeback = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "writeback");
1852                 if(likely(!cg->st_writeback)) {
1853                     snprintfz(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title);
1854                     cg->st_writeback = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", CHART_PRIORITY_CONTAINERS + 300, update_every, RRDSET_TYPE_AREA);
1855                 }
1856
1857                 if(cg->memory.detailed_has_dirty)
1858                     rrddim_add(cg->st_writeback, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1859                 rrddim_add(cg->st_writeback, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1860             }
1861             else
1862                 rrdset_next(cg->st_writeback);
1863
1864             if(cg->memory.detailed_has_dirty)
1865                 rrddim_set(cg->st_writeback, "dirty", cg->memory.dirty);
1866             rrddim_set(cg->st_writeback, "writeback", cg->memory.writeback);
1867             rrdset_done(cg->st_writeback);
1868
1869             if(unlikely(!cg->st_mem_activity)) {
1870                 cg->st_mem_activity = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_activity");
1871                 if(likely(!cg->st_mem_activity)) {
1872                     snprintfz(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title);
1873                     cg->st_mem_activity = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s", CHART_PRIORITY_CONTAINERS + 400, update_every, RRDSET_TYPE_LINE);
1874                 }
1875                 rrddim_add(cg->st_mem_activity, "pgpgin", "in", system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1876                 rrddim_add(cg->st_mem_activity, "pgpgout", "out", -system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1877             }
1878             else
1879                 rrdset_next(cg->st_mem_activity);
1880
1881             rrddim_set(cg->st_mem_activity, "pgpgin", cg->memory.pgpgin);
1882             rrddim_set(cg->st_mem_activity, "pgpgout", cg->memory.pgpgout);
1883             rrdset_done(cg->st_mem_activity);
1884
1885             if(unlikely(!cg->st_pgfaults)) {
1886                 cg->st_pgfaults = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "pgfaults");
1887                 if(likely(!cg->st_pgfaults)) {
1888                     snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title);
1889                     cg->st_pgfaults = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", CHART_PRIORITY_CONTAINERS + 500, update_every, RRDSET_TYPE_LINE);
1890                 }
1891                 rrddim_add(cg->st_pgfaults, "pgfault", NULL, system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1892                 rrddim_add(cg->st_pgfaults, "pgmajfault", "swap", -system_page_size, 1024 * 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1893             }
1894             else
1895                 rrdset_next(cg->st_pgfaults);
1896
1897             rrddim_set(cg->st_pgfaults, "pgfault", cg->memory.pgfault);
1898             rrddim_set(cg->st_pgfaults, "pgmajfault", cg->memory.pgmajfault);
1899             rrdset_done(cg->st_pgfaults);
1900         }
1901
1902         if(likely(cg->memory.updated_usage_in_bytes && cg->memory.enabled_usage_in_bytes == CONFIG_ONDEMAND_YES)) {
1903             if(unlikely(!cg->st_mem_usage)) {
1904                 cg->st_mem_usage = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_usage");
1905                 if(likely(!cg->st_mem_usage)) {
1906                     snprintfz(title, CHART_TITLE_MAX, "Used Memory %sfor cgroup %s", (cgroup_used_memory_without_cache && cg->memory.updated_detailed)?"without Cache ":"", cg->chart_title);
1907                     cg->st_mem_usage = rrdset_create(type, "mem_usage", NULL, "mem", "cgroup.mem_usage", title, "MB", CHART_PRIORITY_CONTAINERS + 200, update_every, RRDSET_TYPE_STACKED);
1908                 }
1909                 rrddim_add(cg->st_mem_usage, "ram", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1910                 rrddim_add(cg->st_mem_usage, "swap", NULL, 1, 1024 * 1024, RRDDIM_ALGORITHM_ABSOLUTE);
1911             }
1912             else
1913                 rrdset_next(cg->st_mem_usage);
1914
1915             rrddim_set(cg->st_mem_usage, "ram", cg->memory.usage_in_bytes - ((cgroup_used_memory_without_cache)?cg->memory.cache:0));
1916             rrddim_set(cg->st_mem_usage, "swap", (cg->memory.msw_usage_in_bytes > cg->memory.usage_in_bytes)?cg->memory.msw_usage_in_bytes - cg->memory.usage_in_bytes:0);
1917             rrdset_done(cg->st_mem_usage);
1918         }
1919
1920         if(likely(cg->memory.updated_failcnt && cg->memory.enabled_failcnt == CONFIG_ONDEMAND_YES)) {
1921             if(unlikely(!cg->st_mem_failcnt)) {
1922                 cg->st_mem_failcnt = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_failcnt");
1923                 if(likely(!cg->st_mem_failcnt)) {
1924                     snprintfz(title, CHART_TITLE_MAX, "Memory Limit Failures for cgroup %s", cg->chart_title);
1925                     cg->st_mem_failcnt = rrdset_create(type, "mem_failcnt", NULL, "mem", "cgroup.mem_failcnt", title, "count", CHART_PRIORITY_CONTAINERS + 250, update_every, RRDSET_TYPE_LINE);
1926                 }
1927                 rrddim_add(cg->st_mem_failcnt, "failures", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1928             }
1929             else
1930                 rrdset_next(cg->st_mem_failcnt);
1931
1932             rrddim_set(cg->st_mem_failcnt, "failures", cg->memory.failcnt);
1933             rrdset_done(cg->st_mem_failcnt);
1934         }
1935
1936         if(likely(cg->io_service_bytes.updated && cg->io_service_bytes.enabled == CONFIG_ONDEMAND_YES)) {
1937             if(unlikely(!cg->st_io)) {
1938                 cg->st_io = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "io");
1939                 if(likely(!cg->st_io)) {
1940                     snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1941                     cg->st_io = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", CHART_PRIORITY_CONTAINERS + 1200, update_every, RRDSET_TYPE_AREA);
1942                 }
1943                 rrddim_add(cg->st_io, "read", NULL, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1944                 rrddim_add(cg->st_io, "write", NULL, -1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1945             }
1946             else
1947                 rrdset_next(cg->st_io);
1948
1949             rrddim_set(cg->st_io, "read", cg->io_service_bytes.Read);
1950             rrddim_set(cg->st_io, "write", cg->io_service_bytes.Write);
1951             rrdset_done(cg->st_io);
1952         }
1953
1954         if(likely(cg->io_serviced.updated && cg->io_serviced.enabled == CONFIG_ONDEMAND_YES)) {
1955             if(unlikely(!cg->st_serviced_ops)) {
1956                 cg->st_serviced_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "serviced_ops");
1957                 if(likely(!cg->st_serviced_ops)) {
1958                     snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1959                     cg->st_serviced_ops = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.serviced_ops", title, "operations/s", CHART_PRIORITY_CONTAINERS + 1200, update_every, RRDSET_TYPE_LINE);
1960                 }
1961                 rrddim_add(cg->st_serviced_ops, "read", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1962                 rrddim_add(cg->st_serviced_ops, "write", NULL, -1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1963             }
1964             else
1965                 rrdset_next(cg->st_serviced_ops);
1966
1967             rrddim_set(cg->st_serviced_ops, "read", cg->io_serviced.Read);
1968             rrddim_set(cg->st_serviced_ops, "write", cg->io_serviced.Write);
1969             rrdset_done(cg->st_serviced_ops);
1970         }
1971
1972         if(likely(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.enabled == CONFIG_ONDEMAND_YES)) {
1973             if(unlikely(!cg->st_throttle_io)) {
1974                 cg->st_throttle_io = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "throttle_io");
1975                 if(likely(!cg->st_throttle_io)) {
1976                     snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1977                     cg->st_throttle_io = rrdset_create(type, "throttle_io", NULL, "disk", "cgroup.throttle_io", title, "KB/s", CHART_PRIORITY_CONTAINERS + 1200, update_every, RRDSET_TYPE_AREA);
1978                 }
1979                 rrddim_add(cg->st_throttle_io, "read", NULL, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1980                 rrddim_add(cg->st_throttle_io, "write", NULL, -1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
1981             }
1982             else
1983                 rrdset_next(cg->st_throttle_io);
1984
1985             rrddim_set(cg->st_throttle_io, "read", cg->throttle_io_service_bytes.Read);
1986             rrddim_set(cg->st_throttle_io, "write", cg->throttle_io_service_bytes.Write);
1987             rrdset_done(cg->st_throttle_io);
1988         }
1989
1990         if(likely(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.enabled == CONFIG_ONDEMAND_YES)) {
1991             if(unlikely(!cg->st_throttle_serviced_ops)) {
1992                 cg->st_throttle_serviced_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "throttle_serviced_ops");
1993                 if(likely(!cg->st_throttle_serviced_ops)) {
1994                     snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1995                     cg->st_throttle_serviced_ops = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", CHART_PRIORITY_CONTAINERS + 1200, update_every, RRDSET_TYPE_LINE);
1996                 }
1997                 rrddim_add(cg->st_throttle_serviced_ops, "read", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1998                 rrddim_add(cg->st_throttle_serviced_ops, "write", NULL, -1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
1999             }
2000             else
2001                 rrdset_next(cg->st_throttle_serviced_ops);
2002
2003             rrddim_set(cg->st_throttle_serviced_ops, "read", cg->throttle_io_serviced.Read);
2004             rrddim_set(cg->st_throttle_serviced_ops, "write", cg->throttle_io_serviced.Write);
2005             rrdset_done(cg->st_throttle_serviced_ops);
2006         }
2007
2008         if(likely(cg->io_queued.updated && cg->io_queued.enabled == CONFIG_ONDEMAND_YES)) {
2009             if(unlikely(!cg->st_queued_ops)) {
2010                 cg->st_queued_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "queued_ops");
2011                 if(likely(!cg->st_queued_ops)) {
2012                     snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title);
2013                     cg->st_queued_ops = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", CHART_PRIORITY_CONTAINERS + 2000, update_every, RRDSET_TYPE_LINE);
2014                 }
2015                 rrddim_add(cg->st_queued_ops, "read", NULL, 1, 1, RRDDIM_ALGORITHM_ABSOLUTE);
2016                 rrddim_add(cg->st_queued_ops, "write", NULL, -1, 1, RRDDIM_ALGORITHM_ABSOLUTE);
2017             }
2018             else
2019                 rrdset_next(cg->st_queued_ops);
2020
2021             rrddim_set(cg->st_queued_ops, "read", cg->io_queued.Read);
2022             rrddim_set(cg->st_queued_ops, "write", cg->io_queued.Write);
2023             rrdset_done(cg->st_queued_ops);
2024         }
2025
2026         if(likely(cg->io_merged.updated && cg->io_merged.enabled == CONFIG_ONDEMAND_YES)) {
2027             if(unlikely(!cg->st_merged_ops)) {
2028                 cg->st_merged_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "merged_ops");
2029                 if(likely(!cg->st_merged_ops)) {
2030                     snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title);
2031                     cg->st_merged_ops = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", CHART_PRIORITY_CONTAINERS + 2100, update_every, RRDSET_TYPE_LINE);
2032                 }
2033                 rrddim_add(cg->st_merged_ops, "read", NULL, 1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
2034                 rrddim_add(cg->st_merged_ops, "write", NULL, -1, 1024, RRDDIM_ALGORITHM_INCREMENTAL);
2035             }
2036             else
2037                 rrdset_next(cg->st_merged_ops);
2038
2039             rrddim_set(cg->st_merged_ops, "read", cg->io_merged.Read);
2040             rrddim_set(cg->st_merged_ops, "write", cg->io_merged.Write);
2041             rrdset_done(cg->st_merged_ops);
2042         }
2043     }
2044
2045     if(likely(cgroup_enable_systemd_services))
2046         update_services_charts(update_every,
2047                 services_do_cpu,
2048                 services_do_mem_usage,
2049                 services_do_mem_detailed,
2050                 services_do_mem_failcnt,
2051                 services_do_swap_usage,
2052                 services_do_io,
2053                 services_do_io_ops,
2054                 services_do_throttle_io,
2055                 services_do_throttle_ops,
2056                 services_do_queued_ops,
2057                 services_do_merged_ops
2058         );
2059
2060     debug(D_CGROUP, "done updating cgroups charts");
2061 }
2062
2063 // ----------------------------------------------------------------------------
2064 // cgroups main
2065
2066 void *cgroups_main(void *ptr) {
2067     struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
2068
2069     info("CGROUP Plugin thread created with task id %d", gettid());
2070
2071     if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
2072         error("Cannot set pthread cancel type to DEFERRED.");
2073
2074     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
2075         error("Cannot set pthread cancel state to ENABLE.");
2076
2077     struct rusage thread;
2078
2079     // when ZERO, attempt to do it
2080     int vdo_cpu_netdata = config_get_boolean("plugin:cgroups", "cgroups plugin resource charts", 1);
2081
2082     read_cgroup_plugin_configuration();
2083
2084     RRDSET *stcpu_thread = NULL;
2085
2086     heartbeat_t hb;
2087     heartbeat_init(&hb);
2088     usec_t step = cgroup_update_every * USEC_PER_SEC;
2089     usec_t find_every = cgroup_check_for_new_every * USEC_PER_SEC, find_dt = 0;
2090     for(;;) {
2091         usec_t hb_dt = heartbeat_next(&hb, step);
2092         if(unlikely(netdata_exit)) break;
2093
2094         // BEGIN -- the job to be done
2095
2096         find_dt += hb_dt;
2097         if(unlikely(find_dt >= find_every)) {
2098             find_all_cgroups();
2099             find_dt = 0;
2100         }
2101
2102         read_all_cgroups(cgroup_root);
2103         update_cgroup_charts(cgroup_update_every);
2104
2105         // END -- the job is done
2106
2107         // --------------------------------------------------------------------
2108
2109         if(vdo_cpu_netdata) {
2110             getrusage(RUSAGE_THREAD, &thread);
2111
2112             if(unlikely(!stcpu_thread)) {
2113                 stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu");
2114                 if(unlikely(!stcpu_thread))
2115                     stcpu_thread = rrdset_create("netdata", "plugin_cgroups_cpu", NULL, "cgroups", NULL, "NetData CGroups Plugin CPU usage", "milliseconds/s", 132000, cgroup_update_every, RRDSET_TYPE_STACKED);
2116
2117                 rrddim_add(stcpu_thread, "user",  NULL,  1, 1000, RRDDIM_ALGORITHM_INCREMENTAL);
2118                 rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_ALGORITHM_INCREMENTAL);
2119             }
2120             else
2121                 rrdset_next(stcpu_thread);
2122
2123             rrddim_set(stcpu_thread, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
2124             rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
2125             rrdset_done(stcpu_thread);
2126         }
2127     }
2128
2129     info("CGROUP thread exiting");
2130
2131     static_thread->enabled = 0;
2132     pthread_exit(NULL);
2133     return NULL;
2134 }