src/sys_fs_cgroup.c

   1 #include "common.h"
   2
   3 // ----------------------------------------------------------------------------
   4 // cgroup globals
   5
   6 static int cgroup_enable_cpuacct_stat = CONFIG_ONDEMAND_ONDEMAND;
   7 static int cgroup_enable_cpuacct_usage = CONFIG_ONDEMAND_ONDEMAND;
   8 static int cgroup_enable_memory = CONFIG_ONDEMAND_ONDEMAND;
   9 static int cgroup_enable_devices = CONFIG_ONDEMAND_ONDEMAND;
  10 static int cgroup_enable_blkio = CONFIG_ONDEMAND_ONDEMAND;
  11 static int cgroup_enable_new_cgroups_detected_at_runtime = 1;
  12 static int cgroup_check_for_new_every = 10;
  13 static char *cgroup_cpuacct_base = NULL;
  14 static char *cgroup_blkio_base = NULL;
  15 static char *cgroup_memory_base = NULL;
  16 static char *cgroup_devices_base = NULL;
  17
  18 static int cgroup_root_count = 0;
  19 static int cgroup_root_max = 500;
  20 static int cgroup_max_depth = 0;
  21
  22 static NETDATA_SIMPLE_PATTERN *disabled_cgroups_patterns = NULL;
  23 static NETDATA_SIMPLE_PATTERN *disabled_cgroup_paths = NULL;
  24 static NETDATA_SIMPLE_PATTERN *disabled_cgroup_renames = NULL;
  25 static NETDATA_SIMPLE_PATTERN *systemd_services_cgroups = NULL;
  26
  27 static char *cgroups_rename_script = PLUGINS_DIR "/cgroup-name.sh";
  28
  29 void read_cgroup_plugin_configuration() {
  30     cgroup_check_for_new_every = (int)config_get_number("plugin:cgroups", "check for new cgroups every", cgroup_check_for_new_every);
  31
  32     cgroup_enable_cpuacct_stat = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct stat", cgroup_enable_cpuacct_stat);
  33     cgroup_enable_cpuacct_usage = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct usage", cgroup_enable_cpuacct_usage);
  34     cgroup_enable_memory = config_get_boolean_ondemand("plugin:cgroups", "enable memory", cgroup_enable_memory);
  35     cgroup_enable_blkio = config_get_boolean_ondemand("plugin:cgroups", "enable blkio", cgroup_enable_blkio);
  36
  37     char filename[FILENAME_MAX + 1], *s;
  38     struct mountinfo *mi, *root = mountinfo_read(0);
  39
  40     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct");
  41     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct");
  42     if(!mi) {
  43         error("Cannot find cgroup cpuacct mountinfo. Assuming default: /sys/fs/cgroup/cpuacct");
  44         s = "/sys/fs/cgroup/cpuacct";
  45     }
  46     else s = mi->mount_point;
  47     snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
  48     cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
  49
  50     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio");
  51     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
  52     if(!mi) {
  53         error("Cannot find cgroup blkio mountinfo. Assuming default: /sys/fs/cgroup/blkio");
  54         s = "/sys/fs/cgroup/blkio";
  55     }
  56     else s = mi->mount_point;
  57     snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
  58     cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
  59
  60     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "memory");
  61     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory");
  62     if(!mi) {
  63         error("Cannot find cgroup memory mountinfo. Assuming default: /sys/fs/cgroup/memory");
  64         s = "/sys/fs/cgroup/memory";
  65     }
  66     else s = mi->mount_point;
  67     snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
  68     cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
  69
  70     mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "devices");
  71     if(!mi) mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "devices");
  72     if(!mi) {
  73         error("Cannot find cgroup devices mountinfo. Assuming default: /sys/fs/cgroup/devices");
  74         s = "/sys/fs/cgroup/devices";
  75     }
  76     else s = mi->mount_point;
  77     snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
  78     cgroup_devices_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/devices", filename);
  79
  80     cgroup_root_max = (int)config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
  81     cgroup_max_depth = (int)config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
  82
  83     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);
  84
  85     disabled_cgroups_patterns = netdata_simple_pattern_list_create(
  86             config_get("plugin:cgroups", "disable by default cgroups matching",
  87                     " / /lxc /docker /libvirt /qemu /systemd "
  88                     " /system /system.slice "
  89                     " /machine /machine.slice "
  90                     " /user /user.slice "
  91                     " /init.scope "
  92                     " *.swap "
  93                     " *.slice "
  94                     " *.user "
  95                     " *.mount "
  96                     " *.partition "
  97                     " */ns "                               //   /lxc/*/ns    #1397
  98             ), NETDATA_SIMPLE_PATTERN_MODE_EXACT);
  99
 100     disabled_cgroup_paths = netdata_simple_pattern_list_create(
 101             config_get("plugin:cgroups", "do not search for cgroups in paths matching",
 102                     " /system "
 103                     " /systemd "
 104                     " /user.slice "
 105                     " /user "
 106                     " /init.scope "
 107                     " *-qemu "                             //  #345
 108             ), NETDATA_SIMPLE_PATTERN_MODE_EXACT);
 109
 110     cgroups_rename_script = config_get("plugin:cgroups", "script to get cgroup names", cgroups_rename_script);
 111
 112     disabled_cgroup_renames = netdata_simple_pattern_list_create(
 113             config_get("plugin:cgroups", "do not run script to rename cgroups matching",
 114                     " / "
 115                     " *.service "
 116                     " *.slice "
 117                     " *.scope "
 118                     " *.swap "
 119                     " *.mount "
 120                     " *.partition "
 121                     " *.user "
 122             ), NETDATA_SIMPLE_PATTERN_MODE_EXACT);
 123
 124     systemd_services_cgroups = netdata_simple_pattern_list_create(
 125             config_get("plugin:cgroups", "cgroups to match as systemd services",
 126                     " *.service "
 127             ), NETDATA_SIMPLE_PATTERN_MODE_EXACT);
 128
 129     mountinfo_free(root);
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // cgroup objects
 134
 135 struct blkio {
 136     int updated;
 137
 138     char *filename;
 139
 140     unsigned long long Read;
 141     unsigned long long Write;
 142 /*
 143     unsigned long long Sync;
 144     unsigned long long Async;
 145     unsigned long long Total;
 146 */
 147 };
 148
 149 // https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
 150 struct memory {
 151     int updated;
 152
 153     char *filename;
 154
 155     int has_dirty_swap;
 156
 157     unsigned long long cache;
 158     unsigned long long rss;
 159     unsigned long long rss_huge;
 160     unsigned long long mapped_file;
 161     unsigned long long writeback;
 162     unsigned long long dirty;
 163     unsigned long long swap;
 164     unsigned long long pgpgin;
 165     unsigned long long pgpgout;
 166     unsigned long long pgfault;
 167     unsigned long long pgmajfault;
 168 /*
 169     unsigned long long inactive_anon;
 170     unsigned long long active_anon;
 171     unsigned long long inactive_file;
 172     unsigned long long active_file;
 173     unsigned long long unevictable;
 174     unsigned long long hierarchical_memory_limit;
 175     unsigned long long total_cache;
 176     unsigned long long total_rss;
 177     unsigned long long total_rss_huge;
 178     unsigned long long total_mapped_file;
 179     unsigned long long total_writeback;
 180     unsigned long long total_dirty;
 181     unsigned long long total_swap;
 182     unsigned long long total_pgpgin;
 183     unsigned long long total_pgpgout;
 184     unsigned long long total_pgfault;
 185     unsigned long long total_pgmajfault;
 186     unsigned long long total_inactive_anon;
 187     unsigned long long total_active_anon;
 188     unsigned long long total_inactive_file;
 189     unsigned long long total_active_file;
 190     unsigned long long total_unevictable;
 191 */
 192
 193     int usage_in_bytes_updated;
 194     char *filename_usage_in_bytes;
 195     unsigned long long usage_in_bytes;
 196
 197     int msw_usage_in_bytes_updated;
 198     char *filename_msw_usage_in_bytes;
 199     unsigned long long msw_usage_in_bytes;
 200
 201     int failcnt_updated;
 202     char *filename_failcnt;
 203     unsigned long long failcnt;
 204 };
 205
 206 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 207 struct cpuacct_stat {
 208     int updated;
 209
 210     char *filename;
 211
 212     unsigned long long user;
 213     unsigned long long system;
 214 };
 215
 216 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 217 struct cpuacct_usage {
 218     int updated;
 219
 220     char *filename;
 221
 222     unsigned int cpus;
 223     unsigned long long *cpu_percpu;
 224 };
 225
 226 #define CGROUP_OPTIONS_DISABLED_DUPLICATE   0x00000001
 227 #define CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE 0x00000002
 228
 229 struct cgroup {
 230     uint32_t options;
 231
 232     char available;      // found in the filesystem
 233     char enabled;        // enabled in the config
 234
 235     char *id;
 236     uint32_t hash;
 237
 238     char *chart_id;
 239     uint32_t hash_chart;
 240
 241     char *chart_title;
 242
 243     struct cpuacct_stat cpuacct_stat;
 244     struct cpuacct_usage cpuacct_usage;
 245
 246     struct memory memory;
 247
 248     struct blkio io_service_bytes;              // bytes
 249     struct blkio io_serviced;                   // operations
 250
 251     struct blkio throttle_io_service_bytes;     // bytes
 252     struct blkio throttle_io_serviced;          // operations
 253
 254     struct blkio io_merged;                     // operations
 255     struct blkio io_queued;                     // operations
 256
 257     RRDSET *st_cpu;
 258     RRDSET *st_cpu_per_core;
 259     RRDSET *st_mem;
 260     RRDSET *st_writeback;
 261     RRDSET *st_mem_activity;
 262     RRDSET *st_pgfaults;
 263     RRDSET *st_mem_usage;
 264     RRDSET *st_mem_failcnt;
 265     RRDSET *st_io;
 266     RRDSET *st_serviced_ops;
 267     RRDSET *st_throttle_io;
 268     RRDSET *st_throttle_serviced_ops;
 269     RRDSET *st_queued_ops;
 270     RRDSET *st_merged_ops;
 271
 272     struct cgroup *next;
 273
 274 } *cgroup_root = NULL;
 275
 276 // ----------------------------------------------------------------------------
 277 // read values from /sys
 278
 279 void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
 280     static procfile *ff = NULL;
 281
 282     static uint32_t user_hash = 0;
 283     static uint32_t system_hash = 0;
 284
 285     if(unlikely(user_hash == 0)) {
 286         user_hash = simple_hash("user");
 287         system_hash = simple_hash("system");
 288     }
 289
 290     cp->updated = 0;
 291     if(cp->filename) {
 292         ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
 293         if(!ff) return;
 294
 295         ff = procfile_readall(ff);
 296         if(!ff) return;
 297
 298         unsigned long i, lines = procfile_lines(ff);
 299
 300         if(lines < 1) {
 301             error("File '%s' should have 1+ lines.", cp->filename);
 302             return;
 303         }
 304
 305         for(i = 0; i < lines ; i++) {
 306             char *s = procfile_lineword(ff, i, 0);
 307             uint32_t hash = simple_hash(s);
 308
 309             if(hash == user_hash && !strcmp(s, "user"))
 310                 cp->user = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 311
 312             else if(hash == system_hash && !strcmp(s, "system"))
 313                 cp->system = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 314         }
 315
 316         cp->updated = 1;
 317
 318         // fprintf(stderr, "READ '%s': user: %llu, system: %llu\n", cp->filename, cp->user, cp->system);
 319     }
 320 }
 321
 322 void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
 323     static procfile *ff = NULL;
 324
 325     ca->updated = 0;
 326     if(ca->filename) {
 327         ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
 328         if(!ff) return;
 329
 330         ff = procfile_readall(ff);
 331         if(!ff) return;
 332
 333         if(procfile_lines(ff) < 1) {
 334             error("File '%s' should have 1+ lines but has %u.", ca->filename, procfile_lines(ff));
 335             return;
 336         }
 337
 338         unsigned long i = procfile_linewords(ff, 0);
 339         if(i == 0) return;
 340
 341         // we may have 1 more CPU reported
 342         while(i > 0) {
 343             char *s = procfile_lineword(ff, 0, i - 1);
 344             if(!*s) i--;
 345             else break;
 346         }
 347
 348         if(i != ca->cpus) {
 349             freez(ca->cpu_percpu);
 350             ca->cpu_percpu = mallocz(sizeof(unsigned long long) * i);
 351             ca->cpus = (unsigned int)i;
 352         }
 353
 354         for(i = 0; i < ca->cpus ;i++) {
 355             ca->cpu_percpu[i] = strtoull(procfile_lineword(ff, 0, i), NULL, 10);
 356             // fprintf(stderr, "READ '%s': cpu%d/%d: %llu ('%s')\n", ca->filename, i, ca->cpus, ca->cpu_percpu[i], procfile_lineword(ff, 0, i));
 357         }
 358
 359         ca->updated = 1;
 360     }
 361 }
 362
 363 void cgroup_read_blkio(struct blkio *io) {
 364     static procfile *ff = NULL;
 365
 366     static uint32_t Read_hash = 0;
 367     static uint32_t Write_hash = 0;
 368 /*
 369     static uint32_t Sync_hash = 0;
 370     static uint32_t Async_hash = 0;
 371     static uint32_t Total_hash = 0;
 372 */
 373
 374     if(unlikely(Read_hash == 0)) {
 375         Read_hash = simple_hash("Read");
 376         Write_hash = simple_hash("Write");
 377 /*
 378         Sync_hash = simple_hash("Sync");
 379         Async_hash = simple_hash("Async");
 380         Total_hash = simple_hash("Total");
 381 */
 382     }
 383
 384     io->updated = 0;
 385     if(io->filename) {
 386         ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
 387         if(!ff) return;
 388
 389         ff = procfile_readall(ff);
 390         if(!ff) return;
 391
 392         unsigned long i, lines = procfile_lines(ff);
 393
 394         if(lines < 1) {
 395             error("File '%s' should have 1+ lines.", io->filename);
 396             return;
 397         }
 398
 399         io->Read = 0;
 400         io->Write = 0;
 401 /*
 402         io->Sync = 0;
 403         io->Async = 0;
 404         io->Total = 0;
 405 */
 406
 407         for(i = 0; i < lines ; i++) {
 408             char *s = procfile_lineword(ff, i, 1);
 409             uint32_t hash = simple_hash(s);
 410
 411             if(hash == Read_hash && !strcmp(s, "Read"))
 412                 io->Read += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 413
 414             else if(hash == Write_hash && !strcmp(s, "Write"))
 415                 io->Write += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 416
 417 /*
 418             else if(hash == Sync_hash && !strcmp(s, "Sync"))
 419                 io->Sync += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 420
 421             else if(hash == Async_hash && !strcmp(s, "Async"))
 422                 io->Async += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 423
 424             else if(hash == Total_hash && !strcmp(s, "Total"))
 425                 io->Total += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 426 */
 427         }
 428
 429         io->updated = 1;
 430         // fprintf(stderr, "READ '%s': Read: %llu, Write: %llu, Sync: %llu, Async: %llu, Total: %llu\n", io->filename, io->Read, io->Write, io->Sync, io->Async, io->Total);
 431     }
 432 }
 433
 434 void cgroup_read_memory(struct memory *mem) {
 435     static procfile *ff = NULL;
 436
 437     static uint32_t cache_hash = 0;
 438     static uint32_t rss_hash = 0;
 439     static uint32_t rss_huge_hash = 0;
 440     static uint32_t mapped_file_hash = 0;
 441     static uint32_t writeback_hash = 0;
 442     static uint32_t dirty_hash = 0;
 443     static uint32_t swap_hash = 0;
 444     static uint32_t pgpgin_hash = 0;
 445     static uint32_t pgpgout_hash = 0;
 446     static uint32_t pgfault_hash = 0;
 447     static uint32_t pgmajfault_hash = 0;
 448 /*
 449     static uint32_t inactive_anon_hash = 0;
 450     static uint32_t active_anon_hash = 0;
 451     static uint32_t inactive_file_hash = 0;
 452     static uint32_t active_file_hash = 0;
 453     static uint32_t unevictable_hash = 0;
 454     static uint32_t hierarchical_memory_limit_hash = 0;
 455     static uint32_t total_cache_hash = 0;
 456     static uint32_t total_rss_hash = 0;
 457     static uint32_t total_rss_huge_hash = 0;
 458     static uint32_t total_mapped_file_hash = 0;
 459     static uint32_t total_writeback_hash = 0;
 460     static uint32_t total_dirty_hash = 0;
 461     static uint32_t total_swap_hash = 0;
 462     static uint32_t total_pgpgin_hash = 0;
 463     static uint32_t total_pgpgout_hash = 0;
 464     static uint32_t total_pgfault_hash = 0;
 465     static uint32_t total_pgmajfault_hash = 0;
 466     static uint32_t total_inactive_anon_hash = 0;
 467     static uint32_t total_active_anon_hash = 0;
 468     static uint32_t total_inactive_file_hash = 0;
 469     static uint32_t total_active_file_hash = 0;
 470     static uint32_t total_unevictable_hash = 0;
 471 */
 472     if(unlikely(cache_hash == 0)) {
 473         cache_hash = simple_hash("cache");
 474         rss_hash = simple_hash("rss");
 475         rss_huge_hash = simple_hash("rss_huge");
 476         mapped_file_hash = simple_hash("mapped_file");
 477         writeback_hash = simple_hash("writeback");
 478         dirty_hash = simple_hash("dirty");
 479         swap_hash = simple_hash("swap");
 480         pgpgin_hash = simple_hash("pgpgin");
 481         pgpgout_hash = simple_hash("pgpgout");
 482         pgfault_hash = simple_hash("pgfault");
 483         pgmajfault_hash = simple_hash("pgmajfault");
 484 /*
 485         inactive_anon_hash = simple_hash("inactive_anon");
 486         active_anon_hash = simple_hash("active_anon");
 487         inactive_file_hash = simple_hash("inactive_file");
 488         active_file_hash = simple_hash("active_file");
 489         unevictable_hash = simple_hash("unevictable");
 490         hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
 491         total_cache_hash = simple_hash("total_cache");
 492         total_rss_hash = simple_hash("total_rss");
 493         total_rss_huge_hash = simple_hash("total_rss_huge");
 494         total_mapped_file_hash = simple_hash("total_mapped_file");
 495         total_writeback_hash = simple_hash("total_writeback");
 496         total_dirty_hash = simple_hash("total_dirty");
 497         total_swap_hash = simple_hash("total_swap");
 498         total_pgpgin_hash = simple_hash("total_pgpgin");
 499         total_pgpgout_hash = simple_hash("total_pgpgout");
 500         total_pgfault_hash = simple_hash("total_pgfault");
 501         total_pgmajfault_hash = simple_hash("total_pgmajfault");
 502         total_inactive_anon_hash = simple_hash("total_inactive_anon");
 503         total_active_anon_hash = simple_hash("total_active_anon");
 504         total_inactive_file_hash = simple_hash("total_inactive_file");
 505         total_active_file_hash = simple_hash("total_active_file");
 506         total_unevictable_hash = simple_hash("total_unevictable");
 507 */
 508     }
 509
 510     mem->updated = 0;
 511     if(mem->filename) {
 512         ff = procfile_reopen(ff, mem->filename, NULL, PROCFILE_FLAG_DEFAULT);
 513         if(!ff) return;
 514
 515         ff = procfile_readall(ff);
 516         if(!ff) return;
 517
 518         unsigned long i, lines = procfile_lines(ff);
 519
 520         if(lines < 1) {
 521             error("File '%s' should have 1+ lines.", mem->filename);
 522             return;
 523         }
 524
 525         for(i = 0; i < lines ; i++) {
 526             char *s = procfile_lineword(ff, i, 0);
 527             uint32_t hash = simple_hash(s);
 528
 529             if(hash == cache_hash && !strcmp(s, "cache"))
 530                 mem->cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 531
 532             else if(hash == rss_hash && !strcmp(s, "rss"))
 533                 mem->rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 534
 535             else if(hash == rss_huge_hash && !strcmp(s, "rss_huge"))
 536                 mem->rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 537
 538             else if(hash == mapped_file_hash && !strcmp(s, "mapped_file"))
 539                 mem->mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 540
 541             else if(hash == writeback_hash && !strcmp(s, "writeback"))
 542                 mem->writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 543
 544             else if(hash == dirty_hash && !strcmp(s, "dirty")) {
 545                 mem->dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 546                 mem->has_dirty_swap = 1;
 547             }
 548
 549             else if(hash == swap_hash && !strcmp(s, "swap")) {
 550                 mem->swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 551                 mem->has_dirty_swap = 1;
 552             }
 553
 554             else if(hash == pgpgin_hash && !strcmp(s, "pgpgin"))
 555                 mem->pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 556
 557             else if(hash == pgpgout_hash && !strcmp(s, "pgpgout"))
 558                 mem->pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 559
 560             else if(hash == pgfault_hash && !strcmp(s, "pgfault"))
 561                 mem->pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 562
 563             else if(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))
 564                 mem->pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 565
 566 /*
 567             else if(hash == inactive_anon_hash && !strcmp(s, "inactive_anon"))
 568                 mem->inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 569
 570             else if(hash == active_anon_hash && !strcmp(s, "active_anon"))
 571                 mem->active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 572
 573             else if(hash == inactive_file_hash && !strcmp(s, "inactive_file"))
 574                 mem->inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 575
 576             else if(hash == active_file_hash && !strcmp(s, "active_file"))
 577                 mem->active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 578
 579             else if(hash == unevictable_hash && !strcmp(s, "unevictable"))
 580                 mem->unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 581
 582             else if(hash == hierarchical_memory_limit_hash && !strcmp(s, "hierarchical_memory_limit"))
 583                 mem->hierarchical_memory_limit = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 584
 585             else if(hash == total_cache_hash && !strcmp(s, "total_cache"))
 586                 mem->total_cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 587
 588             else if(hash == total_rss_hash && !strcmp(s, "total_rss"))
 589                 mem->total_rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 590
 591             else if(hash == total_rss_huge_hash && !strcmp(s, "total_rss_huge"))
 592                 mem->total_rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 593
 594             else if(hash == total_mapped_file_hash && !strcmp(s, "total_mapped_file"))
 595                 mem->total_mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 596
 597             else if(hash == total_writeback_hash && !strcmp(s, "total_writeback"))
 598                 mem->total_writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 599
 600             else if(hash == total_dirty_hash && !strcmp(s, "total_dirty"))
 601                 mem->total_dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 602
 603             else if(hash == total_swap_hash && !strcmp(s, "total_swap"))
 604                 mem->total_swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 605
 606             else if(hash == total_pgpgin_hash && !strcmp(s, "total_pgpgin"))
 607                 mem->total_pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 608
 609             else if(hash == total_pgpgout_hash && !strcmp(s, "total_pgpgout"))
 610                 mem->total_pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 611
 612             else if(hash == total_pgfault_hash && !strcmp(s, "total_pgfault"))
 613                 mem->total_pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 614
 615             else if(hash == total_pgmajfault_hash && !strcmp(s, "total_pgmajfault"))
 616                 mem->total_pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 617
 618             else if(hash == total_inactive_anon_hash && !strcmp(s, "total_inactive_anon"))
 619                 mem->total_inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 620
 621             else if(hash == total_active_anon_hash && !strcmp(s, "total_active_anon"))
 622                 mem->total_active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 623
 624             else if(hash == total_inactive_file_hash && !strcmp(s, "total_inactive_file"))
 625                 mem->total_inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 626
 627             else if(hash == total_active_file_hash && !strcmp(s, "total_active_file"))
 628                 mem->total_active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 629
 630             else if(hash == total_unevictable_hash && !strcmp(s, "total_unevictable"))
 631                 mem->total_unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 632 */
 633         }
 634
 635         // 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);
 636
 637         mem->updated = 1;
 638     }
 639
 640     mem->usage_in_bytes_updated = 0;
 641     if(mem->filename_usage_in_bytes) {
 642         if(likely(!read_single_number_file(mem->filename_usage_in_bytes, &mem->usage_in_bytes)))
 643             mem->usage_in_bytes_updated = 1;
 644     }
 645
 646     mem->msw_usage_in_bytes_updated = 0;
 647     if(mem->filename_msw_usage_in_bytes) {
 648         if(likely(!read_single_number_file(mem->filename_msw_usage_in_bytes, &mem->msw_usage_in_bytes)))
 649             mem->msw_usage_in_bytes_updated = 1;
 650     }
 651
 652     mem->failcnt_updated = 0;
 653     if(mem->filename_failcnt) {
 654         if(likely(!read_single_number_file(mem->filename_failcnt, &mem->failcnt)))
 655             mem->failcnt_updated = 1;
 656     }
 657 }
 658
 659 void cgroup_read(struct cgroup *cg) {
 660     debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
 661
 662     cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
 663     cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
 664     cgroup_read_memory(&cg->memory);
 665     cgroup_read_blkio(&cg->io_service_bytes);
 666     cgroup_read_blkio(&cg->io_serviced);
 667     cgroup_read_blkio(&cg->throttle_io_service_bytes);
 668     cgroup_read_blkio(&cg->throttle_io_serviced);
 669     cgroup_read_blkio(&cg->io_merged);
 670     cgroup_read_blkio(&cg->io_queued);
 671 }
 672
 673 void read_all_cgroups(struct cgroup *root) {
 674     debug(D_CGROUP, "reading metrics for all cgroups");
 675
 676     struct cgroup *cg;
 677
 678     for(cg = root; cg ; cg = cg->next)
 679         if(cg->enabled && cg->available)
 680             cgroup_read(cg);
 681 }
 682
 683 // ----------------------------------------------------------------------------
 684 // add/remove/find cgroup objects
 685
 686 #define CGROUP_CHARTID_LINE_MAX 1024
 687
 688 static char *cgroup_title_strdupz(const char *s) {
 689     if(!s || !*s) s = "/";
 690
 691     if(*s == '/' && s[1] != '\0') s++;
 692
 693     char *r = strdupz(s);
 694     netdata_fix_chart_name(r);
 695
 696     return r;
 697 }
 698
 699 static char *cgroup_chart_id_strdupz(const char *s) {
 700     if(!s || !*s) s = "/";
 701
 702     if(*s == '/' && s[1] != '\0') s++;
 703
 704     char *r = strdupz(s);
 705     netdata_fix_chart_id(r);
 706
 707     return r;
 708 }
 709
 710 void cgroup_get_chart_name(struct cgroup *cg) {
 711     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);
 712
 713     if(!netdata_simple_pattern_list_matches(disabled_cgroup_renames, cg->id) &&
 714             !netdata_simple_pattern_list_matches(disabled_cgroup_renames, cg->chart_id)) {
 715
 716         pid_t cgroup_pid;
 717         char buffer[CGROUP_CHARTID_LINE_MAX + 1];
 718
 719         snprintfz(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'", cgroups_rename_script, cg->chart_id);
 720
 721         debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
 722         FILE *fp = mypopen(buffer, &cgroup_pid);
 723         if(fp) {
 724             // debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
 725             char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
 726             // debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
 727             mypclose(fp, cgroup_pid);
 728             // debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
 729
 730             if(s && *s && *s != '\n') {
 731                 debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
 732
 733                 trim(s);
 734
 735                 freez(cg->chart_title);
 736                 cg->chart_title = cgroup_title_strdupz(s);
 737
 738                 freez(cg->chart_id);
 739                 cg->chart_id = cgroup_chart_id_strdupz(s);
 740                 cg->hash_chart = simple_hash(cg->chart_id);
 741             }
 742         }
 743         else
 744             error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer);
 745
 746         debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
 747     }
 748     else
 749         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);
 750
 751
 752     if(netdata_simple_pattern_list_matches(systemd_services_cgroups, cg->id) ||
 753             netdata_simple_pattern_list_matches(systemd_services_cgroups, cg->chart_id)) {
 754         debug(D_CGROUP, "cgroup '%s' with chart id '%s' (title: '%s') matches systemd services cgroups", cg->id, cg->chart_id, cg->chart_title);
 755
 756         char buffer[CGROUP_CHARTID_LINE_MAX + 1];
 757         cg->options |= CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE;
 758
 759         strncpy(buffer, cg->id, CGROUP_CHARTID_LINE_MAX);
 760         char *s = buffer;
 761
 762         // skip to the last slash
 763         size_t len = strlen(s);
 764         while(len--) if(unlikely(s[len] == '/')) break;
 765         if(len) s = &s[len+1];
 766
 767         // remove extension
 768         //len = strlen(s);
 769         //while(len--) if(unlikely(s[len] == '.')) break;
 770         //if(len) s[len] = '\0';
 771
 772         freez(cg->chart_title);
 773         cg->chart_title = cgroup_title_strdupz(s);
 774
 775         freez(cg->chart_id);
 776         cg->chart_id = cgroup_chart_id_strdupz(s);
 777         cg->hash_chart = simple_hash(cg->chart_id);
 778
 779         debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
 780     }
 781     else
 782         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);
 783 }
 784
 785 struct cgroup *cgroup_add(const char *id) {
 786     if(!id || !*id) id = "/";
 787     debug(D_CGROUP, "adding to list, cgroup with id '%s'", id);
 788
 789     if(cgroup_root_count >= cgroup_root_max) {
 790         info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
 791         return NULL;
 792     }
 793
 794     int def = netdata_simple_pattern_list_matches(disabled_cgroups_patterns, id)?0:cgroup_enable_new_cgroups_detected_at_runtime;
 795     struct cgroup *cg = callocz(1, sizeof(struct cgroup));
 796
 797     cg->id = strdupz(id);
 798     cg->hash = simple_hash(cg->id);
 799
 800     cg->chart_title = cgroup_title_strdupz(id);
 801
 802     cg->chart_id = cgroup_chart_id_strdupz(id);
 803     cg->hash_chart = simple_hash(cg->chart_id);
 804
 805     if(!cgroup_root)
 806         cgroup_root = cg;
 807     else {
 808         // append it
 809         struct cgroup *e;
 810         for(e = cgroup_root; e->next ;e = e->next) ;
 811         e->next = cg;
 812     }
 813
 814     cgroup_root_count++;
 815
 816     // fix the name by calling the external script
 817     cgroup_get_chart_name(cg);
 818
 819     char option[FILENAME_MAX + 1];
 820     snprintfz(option, FILENAME_MAX, "enable cgroup %s", cg->chart_title);
 821     cg->enabled = (char)config_get_boolean("plugin:cgroups", option, def);
 822
 823     if(cg->enabled) {
 824         struct cgroup *t;
 825         for (t = cgroup_root; t; t = t->next) {
 826             if (t != cg && t->enabled && t->hash_chart == cg->hash_chart && !strcmp(t->chart_id, cg->chart_id)) {
 827                 if (!strncmp(t->chart_id, "/system.slice/", 14) && !strncmp(cg->chart_id, "/init.scope/system.slice/", 25)) {
 828                     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'.",
 829                           cg->chart_id, t->id, cg->id, t->id);
 830                     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'.",
 831                           cg->chart_id, t->id, cg->id, t->id);
 832                     t->enabled = 0;
 833                     t->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
 834                 }
 835                 else {
 836                     error("Control group with chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
 837                           cg->chart_id, t->id, cg->id);
 838                     debug(D_CGROUP, "Control group with chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.",
 839                           cg->chart_id, t->id, cg->id);
 840                     cg->enabled = 0;
 841                     cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE;
 842                 }
 843
 844                 break;
 845             }
 846         }
 847     }
 848
 849     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");
 850
 851     return cg;
 852 }
 853
 854 void cgroup_free(struct cgroup *cg) {
 855     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");
 856
 857     freez(cg->cpuacct_usage.cpu_percpu);
 858
 859     freez(cg->cpuacct_stat.filename);
 860     freez(cg->cpuacct_usage.filename);
 861
 862     freez(cg->memory.filename);
 863     freez(cg->memory.filename_failcnt);
 864     freez(cg->memory.filename_usage_in_bytes);
 865     freez(cg->memory.filename_msw_usage_in_bytes);
 866
 867     freez(cg->io_service_bytes.filename);
 868     freez(cg->io_serviced.filename);
 869
 870     freez(cg->throttle_io_service_bytes.filename);
 871     freez(cg->throttle_io_serviced.filename);
 872
 873     freez(cg->io_merged.filename);
 874     freez(cg->io_queued.filename);
 875
 876     freez(cg->id);
 877     freez(cg->chart_id);
 878     freez(cg->chart_title);
 879
 880     freez(cg);
 881
 882     cgroup_root_count--;
 883 }
 884
 885 // find if a given cgroup exists
 886 struct cgroup *cgroup_find(const char *id) {
 887     debug(D_CGROUP, "searching for cgroup '%s'", id);
 888
 889     uint32_t hash = simple_hash(id);
 890
 891     struct cgroup *cg;
 892     for(cg = cgroup_root; cg ; cg = cg->next) {
 893         if(hash == cg->hash && strcmp(id, cg->id) == 0)
 894             break;
 895     }
 896
 897     debug(D_CGROUP, "cgroup '%s' %s in memory", id, (cg)?"found":"not found");
 898     return cg;
 899 }
 900
 901 // ----------------------------------------------------------------------------
 902 // detect running cgroups
 903
 904 // callback for find_file_in_subdirs()
 905 void found_subdir_in_dir(const char *dir) {
 906     debug(D_CGROUP, "examining cgroup dir '%s'", dir);
 907
 908     struct cgroup *cg = cgroup_find(dir);
 909     if(!cg) {
 910         if(*dir && cgroup_max_depth > 0) {
 911             int depth = 0;
 912             const char *s;
 913
 914             for(s = dir; *s ;s++)
 915                 if(unlikely(*s == '/'))
 916                     depth++;
 917
 918             if(depth > cgroup_max_depth) {
 919                 info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
 920                 return;
 921             }
 922         }
 923         // debug(D_CGROUP, "will add dir '%s' as cgroup", dir);
 924         cg = cgroup_add(dir);
 925     }
 926
 927     if(cg) cg->available = 1;
 928 }
 929
 930 int find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
 931     if(!this) this = base;
 932     debug(D_CGROUP, "searching for directories in '%s' (base '%s')", this?this:"", base);
 933
 934     size_t dirlen = strlen(this), baselen = strlen(base);
 935
 936     int ret = -1;
 937     int enabled = -1;
 938
 939     const char *relative_path = &this[baselen];
 940     if(!*relative_path) relative_path = "/";
 941
 942     DIR *dir = opendir(this);
 943     if(!dir) {
 944         error("Cannot read cgroups directory '%s'", base);
 945         return ret;
 946     }
 947     ret = 1;
 948
 949     callback(relative_path);
 950
 951     struct dirent *de = NULL;
 952     while((de = readdir(dir))) {
 953         if(de->d_type == DT_DIR
 954             && (
 955                 (de->d_name[0] == '.' && de->d_name[1] == '\0')
 956                 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
 957                 ))
 958             continue;
 959
 960         if(de->d_type == DT_DIR) {
 961             if(enabled == -1) {
 962                 const char *r = relative_path;
 963                 if(*r == '\0') r = "/";
 964
 965                 // do not decent in directories we are not interested
 966                 int def = 1;
 967                 if(netdata_simple_pattern_list_matches(disabled_cgroup_paths, r))
 968                     def = 0;
 969
 970                 // we check for this option here
 971                 // so that the config will not have settings
 972                 // for leaf directories
 973                 char option[FILENAME_MAX + 1];
 974                 snprintfz(option, FILENAME_MAX, "search for cgroups under %s", r);
 975                 option[FILENAME_MAX] = '\0';
 976                 enabled = config_get_boolean("plugin:cgroups", option, def);
 977             }
 978
 979             if(enabled) {
 980                 char *s = mallocz(dirlen + strlen(de->d_name) + 2);
 981                 strcpy(s, this);
 982                 strcat(s, "/");
 983                 strcat(s, de->d_name);
 984                 int ret2 = find_dir_in_subdirs(base, s, callback);
 985                 if(ret2 > 0) ret += ret2;
 986                 freez(s);
 987             }
 988         }
 989     }
 990
 991     closedir(dir);
 992     return ret;
 993 }
 994
 995 void mark_all_cgroups_as_not_available() {
 996     debug(D_CGROUP, "marking all cgroups as not available");
 997
 998     struct cgroup *cg;
 999
1000     // mark all as not available
1001     for(cg = cgroup_root; cg ; cg = cg->next) {
1002         cg->available = 0;
1003     }
1004 }
1005
1006 void cleanup_all_cgroups() {
1007     struct cgroup *cg = cgroup_root, *last = NULL;
1008
1009     for(; cg ;) {
1010         if(!cg->available) {
1011             // enable the first duplicate cgroup
1012             {
1013                 struct cgroup *t;
1014                 for(t = cgroup_root; t ; t = t->next) {
1015                     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)) {
1016                         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);
1017                         t->enabled = 1;
1018                         t->options &= ~CGROUP_OPTIONS_DISABLED_DUPLICATE;
1019                         break;
1020                     }
1021                 }
1022             }
1023
1024             if(!last)
1025                 cgroup_root = cg->next;
1026             else
1027                 last->next = cg->next;
1028
1029             cgroup_free(cg);
1030
1031             if(!last)
1032                 cg = cgroup_root;
1033             else
1034                 cg = last->next;
1035         }
1036         else {
1037             last = cg;
1038             cg = cg->next;
1039         }
1040     }
1041 }
1042
1043 void find_all_cgroups() {
1044     debug(D_CGROUP, "searching for cgroups");
1045
1046     mark_all_cgroups_as_not_available();
1047
1048     if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage) {
1049         if (find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir) == -1) {
1050             cgroup_enable_cpuacct_stat = cgroup_enable_cpuacct_usage = 0;
1051             error("disabled cgroup cpu statistics.");
1052         }
1053     }
1054
1055     if(cgroup_enable_blkio) {
1056         if (find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir) == -1) {
1057             cgroup_enable_blkio = 0;
1058             error("disabled cgroup blkio statistics.");
1059         }
1060     }
1061
1062     if(cgroup_enable_memory) {
1063         if(find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir) == -1) {
1064             cgroup_enable_memory = 0;
1065             error("disabled cgroup memory statistics.");
1066         }
1067     }
1068
1069     if(cgroup_enable_devices) {
1070         if(find_dir_in_subdirs(cgroup_devices_base, NULL, found_subdir_in_dir) == -1) {
1071             cgroup_enable_devices = 0;
1072             error("disabled cgroup devices statistics.");
1073         }
1074     }
1075
1076     // remove any non-existing cgroups
1077     cleanup_all_cgroups();
1078
1079     struct cgroup *cg;
1080     struct stat buf;
1081     for(cg = cgroup_root; cg ; cg = cg->next) {
1082         // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
1083
1084         if(unlikely(!cg->available))
1085             continue;
1086
1087         debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id);
1088
1089         // check for newly added cgroups
1090         // and update the filenames they read
1091         char filename[FILENAME_MAX + 1];
1092         if(unlikely(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename)) {
1093             snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
1094             if(stat(filename, &buf) != -1) {
1095                 cg->cpuacct_stat.filename = strdupz(filename);
1096                 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
1097             }
1098             else debug(D_CGROUP, "cpuacct.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1099         }
1100
1101         if(unlikely(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename)) {
1102             snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
1103             if(stat(filename, &buf) != -1) {
1104                 cg->cpuacct_usage.filename = strdupz(filename);
1105                 debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename);
1106             }
1107             else debug(D_CGROUP, "cpuacct.usage_percpu file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1108         }
1109
1110         if(unlikely(cgroup_enable_memory)) {
1111             if(unlikely(!cg->memory.filename)) {
1112                 snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
1113                 if(stat(filename, &buf) != -1) {
1114                     cg->memory.filename = strdupz(filename);
1115                     debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename);
1116                 }
1117                 else
1118                     debug(D_CGROUP, "memory.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1119             }
1120             if(unlikely(!cg->memory.filename_usage_in_bytes)) {
1121                 snprintfz(filename, FILENAME_MAX, "%s%s/memory.usage_in_bytes", cgroup_memory_base, cg->id);
1122                 if(stat(filename, &buf) != -1) {
1123                     cg->memory.filename_usage_in_bytes = strdupz(filename);
1124                     debug(D_CGROUP, "memory.usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_usage_in_bytes);
1125                 }
1126                 else
1127                     debug(D_CGROUP, "memory.usage_in_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1128             }
1129             if(unlikely(!cg->memory.filename_msw_usage_in_bytes)) {
1130                 snprintfz(filename, FILENAME_MAX, "%s%s/memory.msw_usage_in_bytes", cgroup_memory_base, cg->id);
1131                 if(stat(filename, &buf) != -1) {
1132                     cg->memory.filename_msw_usage_in_bytes = strdupz(filename);
1133                     debug(D_CGROUP, "memory.msw_usage_in_bytes filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_msw_usage_in_bytes);
1134                 }
1135                 else
1136                     debug(D_CGROUP, "memory.msw_usage_in_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1137             }
1138             if(unlikely(!cg->memory.filename_failcnt)) {
1139                 snprintfz(filename, FILENAME_MAX, "%s%s/memory.failcnt", cgroup_memory_base, cg->id);
1140                 if(stat(filename, &buf) != -1) {
1141                     cg->memory.filename_failcnt = strdupz(filename);
1142                     debug(D_CGROUP, "memory.failcnt filename for cgroup '%s': '%s'", cg->id, cg->memory.filename_failcnt);
1143                 }
1144                 else
1145                     debug(D_CGROUP, "memory.failcnt file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1146             }
1147         }
1148
1149         if(unlikely(cgroup_enable_blkio)) {
1150             if(unlikely(!cg->io_service_bytes.filename)) {
1151                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
1152                 if(stat(filename, &buf) != -1) {
1153                     cg->io_service_bytes.filename = strdupz(filename);
1154                     debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename);
1155                 }
1156                 else debug(D_CGROUP, "io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1157             }
1158             if(unlikely(!cg->io_serviced.filename)) {
1159                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
1160                 if(stat(filename, &buf) != -1) {
1161                     cg->io_serviced.filename = strdupz(filename);
1162                     debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename);
1163                 }
1164                 else debug(D_CGROUP, "io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1165             }
1166             if(unlikely(!cg->throttle_io_service_bytes.filename)) {
1167                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
1168                 if(stat(filename, &buf) != -1) {
1169                     cg->throttle_io_service_bytes.filename = strdupz(filename);
1170                     debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename);
1171                 }
1172                 else debug(D_CGROUP, "throttle_io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1173             }
1174             if(unlikely(!cg->throttle_io_serviced.filename)) {
1175                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
1176                 if(stat(filename, &buf) != -1) {
1177                     cg->throttle_io_serviced.filename = strdupz(filename);
1178                     debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename);
1179                 }
1180                 else debug(D_CGROUP, "throttle_io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1181             }
1182             if(unlikely(!cg->io_merged.filename)) {
1183                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
1184                 if(stat(filename, &buf) != -1) {
1185                     cg->io_merged.filename = strdupz(filename);
1186                     debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename);
1187                 }
1188                 else debug(D_CGROUP, "io_merged file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1189             }
1190             if(unlikely(!cg->io_queued.filename)) {
1191                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
1192                 if(stat(filename, &buf) != -1) {
1193                     cg->io_queued.filename = strdupz(filename);
1194                     debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename);
1195                 }
1196                 else debug(D_CGROUP, "io_queued file for cgroup '%s': '%s' does not exist.", cg->id, filename);
1197             }
1198         }
1199     }
1200
1201     debug(D_CGROUP, "done searching for cgroups");
1202     return;
1203 }
1204
1205 // ----------------------------------------------------------------------------
1206 // generate charts
1207
1208 #define CHART_TITLE_MAX 300
1209
1210 static inline char *cgroup_chart_type(char *buffer, const char *id, size_t len) {
1211     if(buffer[0]) return buffer;
1212
1213     if(id[0] == '\0' || (id[0] == '/' && id[1] == '\0'))
1214         strncpy(buffer, "cgroup_root", len);
1215     else
1216         snprintfz(buffer, len, "cgroup_%s", id);
1217
1218     netdata_fix_chart_id(buffer);
1219     return buffer;
1220 }
1221
1222 void update_cgroup_charts(int update_every) {
1223     debug(D_CGROUP, "updating cgroups charts");
1224
1225     char type[RRD_ID_LENGTH_MAX + 1];
1226     char title[CHART_TITLE_MAX + 1];
1227
1228     struct cgroup *cg;
1229
1230     for(cg = cgroup_root; cg ; cg = cg->next) {
1231         if(!cg->available || !cg->enabled || cg->options & CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE)
1232             continue;
1233
1234         type[0] = '\0';
1235
1236         if(cg->cpuacct_stat.updated) {
1237             if(unlikely(!cg->st_cpu)) {
1238                 cg->st_cpu = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "cpu");
1239                 if(!cg->st_cpu) {
1240                     snprintfz(title, CHART_TITLE_MAX, "CPU Usage (%d%% = %d core%s) for cgroup %s", (processors * 100), processors, (processors > 1) ? "s" : "", cg->chart_title);
1241                     cg->st_cpu = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", 40000, update_every, RRDSET_TYPE_STACKED);
1242
1243                     rrddim_add(cg->st_cpu, "user", NULL, 100, hz, RRDDIM_INCREMENTAL);
1244                     rrddim_add(cg->st_cpu, "system", NULL, 100, hz, RRDDIM_INCREMENTAL);
1245                 }
1246             }
1247             else rrdset_next(cg->st_cpu);
1248
1249             rrddim_set(cg->st_cpu, "user", cg->cpuacct_stat.user);
1250             rrddim_set(cg->st_cpu, "system", cg->cpuacct_stat.system);
1251             rrdset_done(cg->st_cpu);
1252         }
1253
1254         if(cg->cpuacct_usage.updated) {
1255             char id[RRD_ID_LENGTH_MAX + 1];
1256             unsigned int i;
1257
1258             if(unlikely(!cg->st_cpu_per_core)) {
1259                 cg->st_cpu_per_core = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "cpu_per_core");
1260                 if(!cg->st_cpu_per_core) {
1261                     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);
1262                     cg->st_cpu_per_core = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", 40100, update_every, RRDSET_TYPE_STACKED);
1263
1264                     for(i = 0; i < cg->cpuacct_usage.cpus; i++) {
1265                         snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1266                         rrddim_add(cg->st_cpu_per_core, id, NULL, 100, 1000000000, RRDDIM_INCREMENTAL);
1267                     }
1268                 }
1269             }
1270             else rrdset_next(cg->st_cpu_per_core);
1271
1272             for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1273                 snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1274                 rrddim_set(cg->st_cpu_per_core, id, cg->cpuacct_usage.cpu_percpu[i]);
1275             }
1276             rrdset_done(cg->st_cpu_per_core);
1277         }
1278
1279         if(cg->memory.updated) {
1280             if(cg->memory.cache + cg->memory.rss + cg->memory.rss_huge + cg->memory.mapped_file > 0) {
1281                 if(unlikely(!cg->st_mem)) {
1282                     cg->st_mem = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem");
1283                     if(!cg->st_mem) {
1284                         snprintfz(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title);
1285                         cg->st_mem = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", 40210, update_every, RRDSET_TYPE_STACKED);
1286
1287                         rrddim_add(cg->st_mem, "cache", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1288                         rrddim_add(cg->st_mem, "rss", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1289                         if(cg->memory.has_dirty_swap)
1290                             rrddim_add(cg->st_mem, "swap", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1291                         rrddim_add(cg->st_mem, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1292                         rrddim_add(cg->st_mem, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1293                     }
1294                 }
1295                 else rrdset_next(cg->st_mem);
1296
1297                 rrddim_set(cg->st_mem, "cache", cg->memory.cache);
1298                 rrddim_set(cg->st_mem, "rss", cg->memory.rss);
1299                 if(cg->memory.has_dirty_swap)
1300                     rrddim_set(cg->st_mem, "swap", cg->memory.swap);
1301                 rrddim_set(cg->st_mem, "rss_huge", cg->memory.rss_huge);
1302                 rrddim_set(cg->st_mem, "mapped_file", cg->memory.mapped_file);
1303                 rrdset_done(cg->st_mem);
1304             }
1305
1306             if(unlikely(!cg->st_writeback)) {
1307                 cg->st_writeback = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "writeback");
1308                 if(!cg->st_writeback) {
1309                     snprintfz(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title);
1310                     cg->st_writeback = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300, update_every, RRDSET_TYPE_AREA);
1311
1312                     if(cg->memory.has_dirty_swap)
1313                         rrddim_add(cg->st_writeback, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1314                     rrddim_add(cg->st_writeback, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1315                 }
1316             }
1317             else rrdset_next(cg->st_writeback);
1318
1319             if(cg->memory.has_dirty_swap)
1320                 rrddim_set(cg->st_writeback, "dirty", cg->memory.dirty);
1321             rrddim_set(cg->st_writeback, "writeback", cg->memory.writeback);
1322             rrdset_done(cg->st_writeback);
1323
1324             if(cg->memory.pgpgin + cg->memory.pgpgout > 0) {
1325                 if(unlikely(!cg->st_mem_activity)) {
1326                     cg->st_mem_activity = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_activity");
1327                     if(!cg->st_mem_activity) {
1328                         snprintfz(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title);
1329                         cg->st_mem_activity = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s", 40400, update_every, RRDSET_TYPE_LINE);
1330
1331                         rrddim_add(cg->st_mem_activity, "pgpgin", "in", sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1332                         rrddim_add(cg->st_mem_activity, "pgpgout", "out", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1333                     }
1334                 }
1335                 else rrdset_next(cg->st_mem_activity);
1336
1337                 rrddim_set(cg->st_mem_activity, "pgpgin", cg->memory.pgpgin);
1338                 rrddim_set(cg->st_mem_activity, "pgpgout", cg->memory.pgpgout);
1339                 rrdset_done(cg->st_mem_activity);
1340             }
1341
1342             if(cg->memory.pgfault + cg->memory.pgmajfault > 0) {
1343                 if(unlikely(!cg->st_pgfaults)) {
1344                     cg->st_pgfaults = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "pgfaults");
1345                     if(!cg->st_pgfaults) {
1346                         snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title);
1347                         cg->st_pgfaults = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", 40500, update_every, RRDSET_TYPE_LINE);
1348
1349                         rrddim_add(cg->st_pgfaults, "pgfault", NULL, sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1350                         rrddim_add(cg->st_pgfaults, "pgmajfault", "swap", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1351                     }
1352                 }
1353                 else rrdset_next(cg->st_pgfaults);
1354
1355                 rrddim_set(cg->st_pgfaults, "pgfault", cg->memory.pgfault);
1356                 rrddim_set(cg->st_pgfaults, "pgmajfault", cg->memory.pgmajfault);
1357                 rrdset_done(cg->st_pgfaults);
1358             }
1359         }
1360
1361         if(cg->memory.usage_in_bytes_updated) {
1362             if(unlikely(!cg->st_mem_usage)) {
1363                 cg->st_mem_usage = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_usage");
1364                 if(!cg->st_mem_usage) {
1365                     snprintfz(title, CHART_TITLE_MAX, "Total Memory for cgroup %s", cg->chart_title);
1366                     cg->st_mem_usage = rrdset_create(type, "mem_usage", NULL, "mem", "cgroup.mem_usage", title, "MB", 40200, update_every, RRDSET_TYPE_STACKED);
1367
1368                     rrddim_add(cg->st_mem_usage, "ram", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1369                     rrddim_add(cg->st_mem_usage, "swap", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1370                 }
1371             }
1372             else rrdset_next(cg->st_mem_usage);
1373
1374             rrddim_set(cg->st_mem_usage, "ram", cg->memory.usage_in_bytes);
1375             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);
1376             rrdset_done(cg->st_mem_usage);
1377         }
1378
1379         if(cg->memory.failcnt_updated && cg->memory.failcnt > 0) {
1380             if(unlikely(!cg->st_mem_failcnt)) {
1381                 cg->st_mem_failcnt = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "mem_failcnt");
1382                 if(!cg->st_mem_failcnt) {
1383                     snprintfz(title, CHART_TITLE_MAX, "Memory Limit Failures for cgroup %s", cg->chart_title);
1384                     cg->st_mem_failcnt = rrdset_create(type, "mem_failcnt", NULL, "mem", "cgroup.mem_failcnt", title, "MB", 40250, update_every, RRDSET_TYPE_LINE);
1385
1386                     rrddim_add(cg->st_mem_failcnt, "failures", NULL, 1, 1, RRDDIM_INCREMENTAL);
1387                 }
1388             }
1389             else rrdset_next(cg->st_mem_failcnt);
1390
1391             rrddim_set(cg->st_mem_failcnt, "failures", cg->memory.failcnt);
1392             rrdset_done(cg->st_mem_failcnt);
1393         }
1394
1395         if(cg->io_service_bytes.updated && cg->io_service_bytes.Read + cg->io_service_bytes.Write > 0) {
1396             if(unlikely(!cg->st_io)) {
1397                 cg->st_io = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "io");
1398                 if(!cg->st_io) {
1399                     snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1400                     cg->st_io = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200, update_every, RRDSET_TYPE_AREA);
1401
1402                     rrddim_add(cg->st_io, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1403                     rrddim_add(cg->st_io, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1404                 }
1405             }
1406             else rrdset_next(cg->st_io);
1407
1408             rrddim_set(cg->st_io, "read", cg->io_service_bytes.Read);
1409             rrddim_set(cg->st_io, "write", cg->io_service_bytes.Write);
1410             rrdset_done(cg->st_io);
1411         }
1412
1413         if(cg->io_serviced.updated && cg->io_serviced.Read + cg->io_serviced.Write > 0) {
1414             if(unlikely(!cg->st_serviced_ops)) {
1415                 cg->st_serviced_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "serviced_ops");
1416                 if(!cg->st_serviced_ops) {
1417                     snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s"
1418                               , cg->chart_title);
1419                     cg->st_serviced_ops = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.serviced_ops", title, "operations/s", 41200, update_every, RRDSET_TYPE_LINE);
1420
1421                     rrddim_add(cg->st_serviced_ops, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1422                     rrddim_add(cg->st_serviced_ops, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1423                 }
1424             }
1425             else rrdset_next(cg->st_serviced_ops);
1426
1427             rrddim_set(cg->st_serviced_ops, "read", cg->io_serviced.Read);
1428             rrddim_set(cg->st_serviced_ops, "write", cg->io_serviced.Write);
1429             rrdset_done(cg->st_serviced_ops);
1430         }
1431
1432         if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.Read + cg->throttle_io_service_bytes.Write > 0) {
1433             if(unlikely(!cg->st_throttle_io)) {
1434                 cg->st_throttle_io = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "throttle_io");
1435                 if(!cg->st_throttle_io) {
1436                     snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1437                     cg->st_throttle_io = rrdset_create(type, "throttle_io", NULL, "disk", "cgroup.throttle_io", title, "KB/s", 41200, update_every, RRDSET_TYPE_AREA);
1438
1439                     rrddim_add(cg->st_throttle_io, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1440                     rrddim_add(cg->st_throttle_io, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1441                 }
1442             }
1443             else rrdset_next(cg->st_throttle_io);
1444
1445             rrddim_set(cg->st_throttle_io, "read", cg->throttle_io_service_bytes.Read);
1446             rrddim_set(cg->st_throttle_io, "write", cg->throttle_io_service_bytes.Write);
1447             rrdset_done(cg->st_throttle_io);
1448         }
1449
1450
1451         if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.Read + cg->throttle_io_serviced.Write > 0) {
1452             if(unlikely(!cg->st_throttle_serviced_ops)) {
1453                 cg->st_throttle_serviced_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "throttle_serviced_ops");
1454                 if(!cg->st_throttle_serviced_ops) {
1455                     snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1456                     cg->st_throttle_serviced_ops = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", 41200, update_every, RRDSET_TYPE_LINE);
1457
1458                     rrddim_add(cg->st_throttle_serviced_ops, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1459                     rrddim_add(cg->st_throttle_serviced_ops, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1460                 }
1461             }
1462             else rrdset_next(cg->st_throttle_serviced_ops);
1463
1464             rrddim_set(cg->st_throttle_serviced_ops, "read", cg->throttle_io_serviced.Read);
1465             rrddim_set(cg->st_throttle_serviced_ops, "write", cg->throttle_io_serviced.Write);
1466             rrdset_done(cg->st_throttle_serviced_ops);
1467         }
1468
1469         if(cg->io_queued.updated) {
1470             if(unlikely(!cg->st_queued_ops)) {
1471                 cg->st_queued_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "queued_ops");
1472                 if(!cg->st_queued_ops) {
1473                     snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title);
1474                     cg->st_queued_ops = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", 42000, update_every, RRDSET_TYPE_LINE);
1475
1476                     rrddim_add(cg->st_queued_ops, "read", NULL, 1, 1, RRDDIM_ABSOLUTE);
1477                     rrddim_add(cg->st_queued_ops, "write", NULL, -1, 1, RRDDIM_ABSOLUTE);
1478                 }
1479             }
1480             else rrdset_next(cg->st_queued_ops);
1481
1482             rrddim_set(cg->st_queued_ops, "read", cg->io_queued.Read);
1483             rrddim_set(cg->st_queued_ops, "write", cg->io_queued.Write);
1484             rrdset_done(cg->st_queued_ops);
1485         }
1486
1487         if(cg->io_merged.updated && cg->io_merged.Read + cg->io_merged.Write > 0) {
1488             if(unlikely(!cg->st_merged_ops)) {
1489                 cg->st_merged_ops = rrdset_find_bytype(cgroup_chart_type(type, cg->chart_id, RRD_ID_LENGTH_MAX), "merged_ops");
1490                 if(!cg->st_merged_ops) {
1491                     snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title);
1492                     cg->st_merged_ops = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", 42100, update_every, RRDSET_TYPE_LINE);
1493
1494                     rrddim_add(cg->st_merged_ops, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1495                     rrddim_add(cg->st_merged_ops, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1496                 }
1497             }
1498             else rrdset_next(cg->st_merged_ops);
1499
1500             rrddim_set(cg->st_merged_ops, "read", cg->io_merged.Read);
1501             rrddim_set(cg->st_merged_ops, "write", cg->io_merged.Write);
1502             rrdset_done(cg->st_merged_ops);
1503         }
1504     }
1505
1506     debug(D_CGROUP, "done updating cgroups charts");
1507 }
1508
1509 // ----------------------------------------------------------------------------
1510 // cgroups main
1511
1512 int do_sys_fs_cgroup(int update_every, usec_t dt) {
1513     (void)dt;
1514
1515     static int cgroup_global_config_read = 0;
1516     static time_t last_run = 0;
1517     time_t now = now_realtime_sec();
1518
1519     if(unlikely(!cgroup_global_config_read)) {
1520         read_cgroup_plugin_configuration();
1521         cgroup_global_config_read = 1;
1522     }
1523
1524     if(unlikely(cgroup_enable_new_cgroups_detected_at_runtime && now - last_run > cgroup_check_for_new_every)) {
1525         find_all_cgroups();
1526         last_run = now;
1527     }
1528
1529     read_all_cgroups(cgroup_root);
1530     update_cgroup_charts(update_every);
1531
1532     return 0;
1533 }
1534
1535 void *cgroups_main(void *ptr) {
1536     struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
1537
1538     info("CGROUP Plugin thread created with task id %d", gettid());
1539
1540     if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
1541         error("Cannot set pthread cancel type to DEFERRED.");
1542
1543     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
1544         error("Cannot set pthread cancel state to ENABLE.");
1545
1546     struct rusage thread;
1547
1548     // when ZERO, attempt to do it
1549     int vdo_sys_fs_cgroup           = 0;
1550     int vdo_cpu_netdata             = !config_get_boolean("plugin:cgroups", "cgroups plugin resources", 1);
1551
1552     // keep track of the time each module was called
1553     usec_t sutime_sys_fs_cgroup = 0ULL;
1554
1555     // the next time we will run - aligned properly
1556     usec_t sunext = (now_realtime_sec() - (now_realtime_sec() % rrd_update_every) + rrd_update_every) * USEC_PER_SEC;
1557
1558     RRDSET *stcpu_thread = NULL;
1559
1560     for(;;) {
1561         usec_t sunow;
1562         if(unlikely(netdata_exit)) break;
1563
1564         // delay until it is our time to run
1565         while((sunow = now_realtime_usec()) < sunext)
1566             sleep_usec(sunext - sunow);
1567
1568         // find the next time we need to run
1569         while(now_realtime_usec() > sunext)
1570             sunext += rrd_update_every * USEC_PER_SEC;
1571
1572         if(unlikely(netdata_exit)) break;
1573
1574         // BEGIN -- the job to be done
1575
1576         if(!vdo_sys_fs_cgroup) {
1577             debug(D_PROCNETDEV_LOOP, "PROCNETDEV: calling do_sys_fs_cgroup().");
1578             sunow = now_realtime_usec();
1579             vdo_sys_fs_cgroup = do_sys_fs_cgroup(rrd_update_every, (sutime_sys_fs_cgroup > 0)?sunow - sutime_sys_fs_cgroup:0ULL);
1580             sutime_sys_fs_cgroup = sunow;
1581         }
1582         if(unlikely(netdata_exit)) break;
1583
1584         // END -- the job is done
1585
1586         // --------------------------------------------------------------------
1587
1588         if(!vdo_cpu_netdata) {
1589             getrusage(RUSAGE_THREAD, &thread);
1590
1591             if(!stcpu_thread) stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu");
1592             if(!stcpu_thread) {
1593                 stcpu_thread = rrdset_create("netdata", "plugin_cgroups_cpu", NULL, "cgroups", NULL, "NetData CGroups Plugin CPU usage", "milliseconds/s", 132000, rrd_update_every, RRDSET_TYPE_STACKED);
1594
1595                 rrddim_add(stcpu_thread, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
1596                 rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1597             }
1598             else rrdset_next(stcpu_thread);
1599
1600             rrddim_set(stcpu_thread, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
1601             rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
1602             rrdset_done(stcpu_thread);
1603         }
1604     }
1605
1606     info("CGROUP thread exiting");
1607
1608     static_thread->enabled = 0;
1609     pthread_exit(NULL);
1610     return NULL;
1611 }