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