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();
  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
 143 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 144 struct cpuacct_stat {
 145         int updated;
 146
 147         char *filename;
 148
 149         unsigned long long user;
 150         unsigned long long system;
 151 };
 152
 153 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
 154 struct cpuacct_usage {
 155         int updated;
 156
 157         char *filename;
 158
 159         unsigned int cpus;
 160         unsigned long long *cpu_percpu;
 161 };
 162
 163 struct cgroup {
 164         int available;          // found in the filesystem
 165         int enabled;            // enabled in the config
 166
 167         char *id;
 168         uint32_t hash;
 169
 170         char *chart_id;
 171         char *chart_title;
 172
 173         struct cpuacct_stat cpuacct_stat;
 174         struct cpuacct_usage cpuacct_usage;
 175
 176         struct memory memory;
 177
 178         struct blkio io_service_bytes;                          // bytes
 179         struct blkio io_serviced;                                       // operations
 180
 181         struct blkio throttle_io_service_bytes;         // bytes
 182         struct blkio throttle_io_serviced;                      // operations
 183
 184         struct blkio io_merged;                                         // operations
 185         struct blkio io_queued;                                         // operations
 186
 187         struct cgroup *next;
 188
 189 } *cgroup_root = NULL;
 190
 191 // ----------------------------------------------------------------------------
 192 // read values from /sys
 193
 194 void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
 195         static procfile *ff = NULL;
 196
 197         static uint32_t user_hash = 0;
 198         static uint32_t system_hash = 0;
 199
 200         if(unlikely(user_hash == 0)) {
 201                 user_hash = simple_hash("user");
 202                 system_hash = simple_hash("system");
 203         }
 204
 205         cp->updated = 0;
 206         if(cp->filename) {
 207                 ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
 208                 if(!ff) return;
 209
 210                 ff = procfile_readall(ff);
 211                 if(!ff) return;
 212
 213                 unsigned long i, lines = procfile_lines(ff);
 214
 215                 if(lines < 1) {
 216                         error("File '%s' should have 1+ lines.", cp->filename);
 217                         return;
 218                 }
 219
 220                 for(i = 0; i < lines ; i++) {
 221                         char *s = procfile_lineword(ff, i, 0);
 222                         uint32_t hash = simple_hash(s);
 223
 224                         if(hash == user_hash && !strcmp(s, "user"))
 225                                 cp->user = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 226
 227                         else if(hash == system_hash && !strcmp(s, "system"))
 228                                 cp->system = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 229                 }
 230
 231                 cp->updated = 1;
 232
 233                 // fprintf(stderr, "READ '%s': user: %llu, system: %llu\n", cp->filename, cp->user, cp->system);
 234         }
 235 }
 236
 237 void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
 238         static procfile *ff = NULL;
 239
 240         ca->updated = 0;
 241         if(ca->filename) {
 242                 ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
 243                 if(!ff) return;
 244
 245                 ff = procfile_readall(ff);
 246                 if(!ff) return;
 247
 248                 if(procfile_lines(ff) < 1) {
 249                         error("File '%s' should have 1+ lines but has %u.", ca->filename, procfile_lines(ff));
 250                         return;
 251                 }
 252
 253                 unsigned long i = procfile_linewords(ff, 0);
 254                 if(i <= 0) return;
 255
 256                 // we may have 1 more CPU reported
 257                 while(i > 0) {
 258                         char *s = procfile_lineword(ff, 0, i - 1);
 259                         if(!*s) i--;
 260                         else break;
 261                 }
 262
 263                 if(i != ca->cpus) {
 264                         freez(ca->cpu_percpu);
 265                         ca->cpu_percpu = mallocz(sizeof(unsigned long long) * i);
 266                         ca->cpus = (unsigned int)i;
 267                 }
 268
 269                 for(i = 0; i < ca->cpus ;i++) {
 270                         ca->cpu_percpu[i] = strtoull(procfile_lineword(ff, 0, i), NULL, 10);
 271                         // fprintf(stderr, "READ '%s': cpu%d/%d: %llu ('%s')\n", ca->filename, i, ca->cpus, ca->cpu_percpu[i], procfile_lineword(ff, 0, i));
 272                 }
 273
 274                 ca->updated = 1;
 275         }
 276 }
 277
 278 void cgroup_read_blkio(struct blkio *io) {
 279         static procfile *ff = NULL;
 280
 281         static uint32_t Read_hash = 0;
 282         static uint32_t Write_hash = 0;
 283 /*
 284         static uint32_t Sync_hash = 0;
 285         static uint32_t Async_hash = 0;
 286         static uint32_t Total_hash = 0;
 287 */
 288
 289         if(unlikely(Read_hash == 0)) {
 290                 Read_hash = simple_hash("Read");
 291                 Write_hash = simple_hash("Write");
 292 /*
 293                 Sync_hash = simple_hash("Sync");
 294                 Async_hash = simple_hash("Async");
 295                 Total_hash = simple_hash("Total");
 296 */
 297         }
 298
 299         io->updated = 0;
 300         if(io->filename) {
 301                 ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
 302                 if(!ff) return;
 303
 304                 ff = procfile_readall(ff);
 305                 if(!ff) return;
 306
 307                 unsigned long i, lines = procfile_lines(ff);
 308
 309                 if(lines < 1) {
 310                         error("File '%s' should have 1+ lines.", io->filename);
 311                         return;
 312                 }
 313
 314                 io->Read = 0;
 315                 io->Write = 0;
 316 /*
 317                 io->Sync = 0;
 318                 io->Async = 0;
 319                 io->Total = 0;
 320 */
 321
 322                 for(i = 0; i < lines ; i++) {
 323                         char *s = procfile_lineword(ff, i, 1);
 324                         uint32_t hash = simple_hash(s);
 325
 326                         if(hash == Read_hash && !strcmp(s, "Read"))
 327                                 io->Read += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 328
 329                         else if(hash == Write_hash && !strcmp(s, "Write"))
 330                                 io->Write += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 331
 332 /*
 333                         else if(hash == Sync_hash && !strcmp(s, "Sync"))
 334                                 io->Sync += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 335
 336                         else if(hash == Async_hash && !strcmp(s, "Async"))
 337                                 io->Async += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 338
 339                         else if(hash == Total_hash && !strcmp(s, "Total"))
 340                                 io->Total += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
 341 */
 342                 }
 343
 344                 io->updated = 1;
 345                 // 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);
 346         }
 347 }
 348
 349 void cgroup_read_memory(struct memory *mem) {
 350         static procfile *ff = NULL;
 351
 352         static uint32_t cache_hash = 0;
 353         static uint32_t rss_hash = 0;
 354         static uint32_t rss_huge_hash = 0;
 355         static uint32_t mapped_file_hash = 0;
 356         static uint32_t writeback_hash = 0;
 357         static uint32_t dirty_hash = 0;
 358         static uint32_t swap_hash = 0;
 359         static uint32_t pgpgin_hash = 0;
 360         static uint32_t pgpgout_hash = 0;
 361         static uint32_t pgfault_hash = 0;
 362         static uint32_t pgmajfault_hash = 0;
 363 /*
 364         static uint32_t inactive_anon_hash = 0;
 365         static uint32_t active_anon_hash = 0;
 366         static uint32_t inactive_file_hash = 0;
 367         static uint32_t active_file_hash = 0;
 368         static uint32_t unevictable_hash = 0;
 369         static uint32_t hierarchical_memory_limit_hash = 0;
 370         static uint32_t total_cache_hash = 0;
 371         static uint32_t total_rss_hash = 0;
 372         static uint32_t total_rss_huge_hash = 0;
 373         static uint32_t total_mapped_file_hash = 0;
 374         static uint32_t total_writeback_hash = 0;
 375         static uint32_t total_dirty_hash = 0;
 376         static uint32_t total_swap_hash = 0;
 377         static uint32_t total_pgpgin_hash = 0;
 378         static uint32_t total_pgpgout_hash = 0;
 379         static uint32_t total_pgfault_hash = 0;
 380         static uint32_t total_pgmajfault_hash = 0;
 381         static uint32_t total_inactive_anon_hash = 0;
 382         static uint32_t total_active_anon_hash = 0;
 383         static uint32_t total_inactive_file_hash = 0;
 384         static uint32_t total_active_file_hash = 0;
 385         static uint32_t total_unevictable_hash = 0;
 386 */
 387         if(unlikely(cache_hash == 0)) {
 388                 cache_hash = simple_hash("cache");
 389                 rss_hash = simple_hash("rss");
 390                 rss_huge_hash = simple_hash("rss_huge");
 391                 mapped_file_hash = simple_hash("mapped_file");
 392                 writeback_hash = simple_hash("writeback");
 393                 dirty_hash = simple_hash("dirty");
 394                 swap_hash = simple_hash("swap");
 395                 pgpgin_hash = simple_hash("pgpgin");
 396                 pgpgout_hash = simple_hash("pgpgout");
 397                 pgfault_hash = simple_hash("pgfault");
 398                 pgmajfault_hash = simple_hash("pgmajfault");
 399 /*
 400                 inactive_anon_hash = simple_hash("inactive_anon");
 401                 active_anon_hash = simple_hash("active_anon");
 402                 inactive_file_hash = simple_hash("inactive_file");
 403                 active_file_hash = simple_hash("active_file");
 404                 unevictable_hash = simple_hash("unevictable");
 405                 hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
 406                 total_cache_hash = simple_hash("total_cache");
 407                 total_rss_hash = simple_hash("total_rss");
 408                 total_rss_huge_hash = simple_hash("total_rss_huge");
 409                 total_mapped_file_hash = simple_hash("total_mapped_file");
 410                 total_writeback_hash = simple_hash("total_writeback");
 411                 total_dirty_hash = simple_hash("total_dirty");
 412                 total_swap_hash = simple_hash("total_swap");
 413                 total_pgpgin_hash = simple_hash("total_pgpgin");
 414                 total_pgpgout_hash = simple_hash("total_pgpgout");
 415                 total_pgfault_hash = simple_hash("total_pgfault");
 416                 total_pgmajfault_hash = simple_hash("total_pgmajfault");
 417                 total_inactive_anon_hash = simple_hash("total_inactive_anon");
 418                 total_active_anon_hash = simple_hash("total_active_anon");
 419                 total_inactive_file_hash = simple_hash("total_inactive_file");
 420                 total_active_file_hash = simple_hash("total_active_file");
 421                 total_unevictable_hash = simple_hash("total_unevictable");
 422 */
 423         }
 424
 425         mem->updated = 0;
 426         if(mem->filename) {
 427                 ff = procfile_reopen(ff, mem->filename, NULL, PROCFILE_FLAG_DEFAULT);
 428                 if(!ff) return;
 429
 430                 ff = procfile_readall(ff);
 431                 if(!ff) return;
 432
 433                 unsigned long i, lines = procfile_lines(ff);
 434
 435                 if(lines < 1) {
 436                         error("File '%s' should have 1+ lines.", mem->filename);
 437                         return;
 438                 }
 439
 440                 for(i = 0; i < lines ; i++) {
 441                         char *s = procfile_lineword(ff, i, 0);
 442                         uint32_t hash = simple_hash(s);
 443
 444                         if(hash == cache_hash && !strcmp(s, "cache"))
 445                                 mem->cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 446
 447                         else if(hash == rss_hash && !strcmp(s, "rss"))
 448                                 mem->rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 449
 450                         else if(hash == rss_huge_hash && !strcmp(s, "rss_huge"))
 451                                 mem->rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 452
 453                         else if(hash == mapped_file_hash && !strcmp(s, "mapped_file"))
 454                                 mem->mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 455
 456                         else if(hash == writeback_hash && !strcmp(s, "writeback"))
 457                                 mem->writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 458
 459                         else if(hash == dirty_hash && !strcmp(s, "dirty")) {
 460                                 mem->dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 461                                 mem->has_dirty_swap = 1;
 462                         }
 463
 464                         else if(hash == swap_hash && !strcmp(s, "swap")) {
 465                                 mem->swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 466                                 mem->has_dirty_swap = 1;
 467                         }
 468
 469                         else if(hash == pgpgin_hash && !strcmp(s, "pgpgin"))
 470                                 mem->pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 471
 472                         else if(hash == pgpgout_hash && !strcmp(s, "pgpgout"))
 473                                 mem->pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 474
 475                         else if(hash == pgfault_hash && !strcmp(s, "pgfault"))
 476                                 mem->pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 477
 478                         else if(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))
 479                                 mem->pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 480
 481 /*
 482                         else if(hash == inactive_anon_hash && !strcmp(s, "inactive_anon"))
 483                                 mem->inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 484
 485                         else if(hash == active_anon_hash && !strcmp(s, "active_anon"))
 486                                 mem->active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 487
 488                         else if(hash == inactive_file_hash && !strcmp(s, "inactive_file"))
 489                                 mem->inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 490
 491                         else if(hash == active_file_hash && !strcmp(s, "active_file"))
 492                                 mem->active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 493
 494                         else if(hash == unevictable_hash && !strcmp(s, "unevictable"))
 495                                 mem->unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 496
 497                         else if(hash == hierarchical_memory_limit_hash && !strcmp(s, "hierarchical_memory_limit"))
 498                                 mem->hierarchical_memory_limit = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 499
 500                 else if(hash == total_cache_hash && !strcmp(s, "total_cache"))
 501                                 mem->total_cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 502
 503                         else if(hash == total_rss_hash && !strcmp(s, "total_rss"))
 504                                 mem->total_rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 505
 506                         else if(hash == total_rss_huge_hash && !strcmp(s, "total_rss_huge"))
 507                                 mem->total_rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 508
 509                         else if(hash == total_mapped_file_hash && !strcmp(s, "total_mapped_file"))
 510                                 mem->total_mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 511
 512                         else if(hash == total_writeback_hash && !strcmp(s, "total_writeback"))
 513                                 mem->total_writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 514
 515                         else if(hash == total_dirty_hash && !strcmp(s, "total_dirty"))
 516                                 mem->total_dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 517
 518                         else if(hash == total_swap_hash && !strcmp(s, "total_swap"))
 519                                 mem->total_swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 520
 521                         else if(hash == total_pgpgin_hash && !strcmp(s, "total_pgpgin"))
 522                                 mem->total_pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 523
 524                         else if(hash == total_pgpgout_hash && !strcmp(s, "total_pgpgout"))
 525                                 mem->total_pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 526
 527                         else if(hash == total_pgfault_hash && !strcmp(s, "total_pgfault"))
 528                                 mem->total_pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 529
 530                         else if(hash == total_pgmajfault_hash && !strcmp(s, "total_pgmajfault"))
 531                                 mem->total_pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 532
 533                         else if(hash == total_inactive_anon_hash && !strcmp(s, "total_inactive_anon"))
 534                                 mem->total_inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 535
 536                         else if(hash == total_active_anon_hash && !strcmp(s, "total_active_anon"))
 537                                 mem->total_active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 538
 539                         else if(hash == total_inactive_file_hash && !strcmp(s, "total_inactive_file"))
 540                                 mem->total_inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 541
 542                         else if(hash == total_active_file_hash && !strcmp(s, "total_active_file"))
 543                                 mem->total_active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 544
 545                         else if(hash == total_unevictable_hash && !strcmp(s, "total_unevictable"))
 546                                 mem->total_unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
 547 */
 548                 }
 549
 550                 // 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);
 551
 552                 mem->updated = 1;
 553         }
 554 }
 555
 556 void cgroup_read(struct cgroup *cg) {
 557         debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
 558
 559         cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
 560         cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
 561         cgroup_read_memory(&cg->memory);
 562         cgroup_read_blkio(&cg->io_service_bytes);
 563         cgroup_read_blkio(&cg->io_serviced);
 564         cgroup_read_blkio(&cg->throttle_io_service_bytes);
 565         cgroup_read_blkio(&cg->throttle_io_serviced);
 566         cgroup_read_blkio(&cg->io_merged);
 567         cgroup_read_blkio(&cg->io_queued);
 568 }
 569
 570 void read_all_cgroups(struct cgroup *root) {
 571         debug(D_CGROUP, "reading metrics for all cgroups");
 572
 573         struct cgroup *cg;
 574
 575         for(cg = root; cg ; cg = cg->next)
 576                 if(cg->enabled && cg->available)
 577                         cgroup_read(cg);
 578 }
 579
 580 // ----------------------------------------------------------------------------
 581 // add/remove/find cgroup objects
 582
 583 #define CGROUP_CHARTID_LINE_MAX 1024
 584
 585 void cgroup_get_chart_id(struct cgroup *cg) {
 586         debug(D_CGROUP, "getting the name of cgroup '%s'", cg->id);
 587
 588         pid_t cgroup_pid;
 589         char buffer[CGROUP_CHARTID_LINE_MAX + 1];
 590
 591         snprintfz(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'",
 592                  config_get("plugin:cgroups", "script to get cgroup names", PLUGINS_DIR "/cgroup-name.sh"), cg->chart_id);
 593
 594         debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
 595         FILE *fp = mypopen(buffer, &cgroup_pid);
 596         if(!fp) {
 597                 error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer);
 598                 return;
 599         }
 600         debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
 601         char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
 602         debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
 603         mypclose(fp, cgroup_pid);
 604         debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
 605
 606         if(s && *s && *s != '\n') {
 607                 debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
 608
 609                 trim(s);
 610
 611                 freez(cg->chart_title);
 612                 cg->chart_title = strdupz(s);
 613                 netdata_fix_chart_name(cg->chart_title);
 614
 615                 freez(cg->chart_id);
 616                 cg->chart_id = strdupz(s);
 617
 618                 netdata_fix_chart_id(cg->chart_id);
 619
 620                 debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
 621         }
 622         else debug(D_CGROUP, "cgroup '%s' is not to be renamed (will be shown as '%s')", cg->id, cg->chart_id);
 623 }
 624
 625 struct cgroup *cgroup_add(const char *id) {
 626         debug(D_CGROUP, "adding cgroup '%s'", id);
 627
 628         if(cgroup_root_count >= cgroup_root_max) {
 629                 info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
 630                 return NULL;
 631         }
 632
 633         int def = cgroup_enable_new_cgroups_detected_at_runtime;
 634         const char *chart_id = id;
 635         if(!*chart_id) {
 636                 chart_id = "/";
 637
 638                 // disable by default the root cgroup
 639                 def = 0;
 640                 debug(D_CGROUP, "cgroup '%s' is the root container (by default %s)", id, (def)?"enabled":"disabled");
 641         }
 642         else {
 643                 if(*chart_id == '/') chart_id++;
 644
 645                 size_t len = strlen(chart_id);
 646
 647                 // disable by default the parent cgroup
 648                 // for known cgroup managers
 649                 if(!strcmp(chart_id, "lxc") ||
 650                                 !strcmp(chart_id, "docker") ||
 651                                 !strcmp(chart_id, "libvirt") ||
 652                                 !strcmp(chart_id, "qemu") ||
 653                                 !strcmp(chart_id, "systemd") ||
 654                                 !strcmp(chart_id, "system.slice") ||
 655                                 !strcmp(chart_id, "machine.slice") ||
 656                                 !strcmp(chart_id, "init.scope") ||
 657                                 !strcmp(chart_id, "user") ||
 658                                 !strcmp(chart_id, "system") ||
 659                                 !strcmp(chart_id, "machine") ||
 660                                 // starts with them
 661                                 (len >  6 && !strncmp(chart_id, "user/", 6)) ||
 662                                 (len > 11 && !strncmp(chart_id, "user.slice/", 11)) ||
 663                                 // ends with them
 664                                 (len >  5 && !strncmp(&chart_id[len -  5], ".user", 5)) ||
 665                                 (len >  5 && !strncmp(&chart_id[len -  5], ".swap", 5)) ||
 666                                 (len >  6 && !strncmp(&chart_id[len -  6], ".slice", 6)) ||
 667                                 (len >  6 && !strncmp(&chart_id[len -  6], ".mount", 6)) ||
 668                                 (len >  8 && !strncmp(&chart_id[len -  8], ".session", 8)) ||
 669                                 (len >  8 && !strncmp(&chart_id[len -  8], ".service", 8)) ||
 670                                 (len > 10 && !strncmp(&chart_id[len - 10], ".partition", 10))
 671                                 ) {
 672                         def = 0;
 673                         debug(D_CGROUP, "cgroup '%s' is %s (by default)", id, (def)?"enabled":"disabled");
 674                 }
 675         }
 676
 677         struct cgroup *cg = callocz(1, sizeof(struct cgroup));
 678
 679         debug(D_CGROUP, "adding cgroup '%s'", id);
 680
 681         cg->id = strdupz(id);
 682         cg->hash = simple_hash(cg->id);
 683
 684         cg->chart_id = strdupz(chart_id);
 685         cg->chart_title = strdupz(chart_id);
 686
 687         if(!cgroup_root)
 688                 cgroup_root = cg;
 689         else {
 690                 // append it
 691                 struct cgroup *e;
 692                 for(e = cgroup_root; e->next ;e = e->next) ;
 693                 e->next = cg;
 694         }
 695
 696         cgroup_root_count++;
 697
 698         // fix the name by calling the external script
 699         cgroup_get_chart_id(cg);
 700
 701         char option[FILENAME_MAX + 1];
 702         snprintfz(option, FILENAME_MAX, "enable cgroup %s", cg->chart_title);
 703         cg->enabled = config_get_boolean("plugin:cgroups", option, def);
 704
 705         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");
 706
 707         return cg;
 708 }
 709
 710 void cgroup_free(struct cgroup *cg) {
 711         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");
 712
 713         freez(cg->cpuacct_usage.cpu_percpu);
 714
 715         freez(cg->cpuacct_stat.filename);
 716         freez(cg->cpuacct_usage.filename);
 717         freez(cg->memory.filename);
 718         freez(cg->io_service_bytes.filename);
 719         freez(cg->io_serviced.filename);
 720         freez(cg->throttle_io_service_bytes.filename);
 721         freez(cg->throttle_io_serviced.filename);
 722         freez(cg->io_merged.filename);
 723         freez(cg->io_queued.filename);
 724
 725         freez(cg->id);
 726         freez(cg->chart_id);
 727         freez(cg->chart_title);
 728         freez(cg);
 729
 730         cgroup_root_count--;
 731 }
 732
 733 // find if a given cgroup exists
 734 struct cgroup *cgroup_find(const char *id) {
 735         debug(D_CGROUP, "searching for cgroup '%s'", id);
 736
 737         uint32_t hash = simple_hash(id);
 738
 739         struct cgroup *cg;
 740         for(cg = cgroup_root; cg ; cg = cg->next) {
 741                 if(hash == cg->hash && strcmp(id, cg->id) == 0)
 742                         break;
 743         }
 744
 745         debug(D_CGROUP, "cgroup_find('%s') %s", id, (cg)?"found":"not found");
 746         return cg;
 747 }
 748
 749 // ----------------------------------------------------------------------------
 750 // detect running cgroups
 751
 752 // callback for find_file_in_subdirs()
 753 void found_subdir_in_dir(const char *dir) {
 754         debug(D_CGROUP, "examining cgroup dir '%s'", dir);
 755
 756         struct cgroup *cg = cgroup_find(dir);
 757         if(!cg) {
 758                 if(*dir && cgroup_max_depth > 0) {
 759                         int depth = 0;
 760                         const char *s;
 761
 762                         for(s = dir; *s ;s++)
 763                                 if(unlikely(*s == '/'))
 764                                         depth++;
 765
 766                         if(depth > cgroup_max_depth) {
 767                                 info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
 768                                 return;
 769                         }
 770                 }
 771                 debug(D_CGROUP, "will add dir '%s' as cgroup", dir);
 772                 cg = cgroup_add(dir);
 773         }
 774
 775         if(cg) cg->available = 1;
 776 }
 777
 778 void find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
 779         debug(D_CGROUP, "searching for directories in '%s'", base);
 780
 781         int enabled = -1;
 782         if(!this) this = base;
 783         size_t dirlen = strlen(this), baselen = strlen(base);
 784         const char *relative_path = &this[baselen];
 785
 786         DIR *dir = opendir(this);
 787         if(!dir) {
 788                 error("Cannot read cgroups directory '%s'", base);
 789                 return;
 790         }
 791
 792         callback(relative_path);
 793
 794         struct dirent *de = NULL;
 795         while((de = readdir(dir))) {
 796                 if(de->d_type == DT_DIR
 797                         && (
 798                                 (de->d_name[0] == '.' && de->d_name[1] == '\0')
 799                                 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
 800                                 ))
 801                         continue;
 802
 803                 debug(D_CGROUP, "examining '%s/%s'", this, de->d_name);
 804
 805                 if(de->d_type == DT_DIR) {
 806                         if(enabled == -1) {
 807                                 const char *r = relative_path;
 808                                 if(*r == '\0') r = "/";
 809                                 else if (*r == '/') r++;
 810
 811                                 // we check for this option here
 812                                 // so that the config will not have settings
 813                                 // for leaf directories
 814                                 char option[FILENAME_MAX + 1];
 815                                 snprintfz(option, FILENAME_MAX, "search for cgroups under %s", r);
 816                                 option[FILENAME_MAX] = '\0';
 817                                 enabled = config_get_boolean("plugin:cgroups", option, 1);
 818                         }
 819
 820                         if(enabled) {
 821                                 char *s = mallocz(dirlen + strlen(de->d_name) + 2);
 822                 strcpy(s, this);
 823                 strcat(s, "/");
 824                 strcat(s, de->d_name);
 825                 find_dir_in_subdirs(base, s, callback);
 826                 freez(s);
 827                         }
 828                 }
 829         }
 830
 831         closedir(dir);
 832 }
 833
 834 void mark_all_cgroups_as_not_available() {
 835         debug(D_CGROUP, "marking all cgroups as not available");
 836
 837         struct cgroup *cg;
 838
 839         // mark all as not available
 840         for(cg = cgroup_root; cg ; cg = cg->next)
 841                 cg->available = 0;
 842 }
 843
 844 void cleanup_all_cgroups() {
 845         struct cgroup *cg = cgroup_root, *last = NULL;
 846
 847         for(; cg ;) {
 848                 if(!cg->available) {
 849
 850                         if(!last)
 851                                 cgroup_root = cg->next;
 852                         else
 853                                 last->next = cg->next;
 854
 855                         cgroup_free(cg);
 856
 857                         if(!last)
 858                                 cg = cgroup_root;
 859                         else
 860                                 cg = last->next;
 861                 }
 862                 else {
 863                         last = cg;
 864                         cg = cg->next;
 865                 }
 866         }
 867 }
 868
 869 void find_all_cgroups() {
 870         debug(D_CGROUP, "searching for cgroups");
 871
 872         mark_all_cgroups_as_not_available();
 873
 874         if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage)
 875                 find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir);
 876
 877         if(cgroup_enable_blkio)
 878                 find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir);
 879
 880         if(cgroup_enable_memory)
 881                 find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir);
 882
 883         if(cgroup_enable_devices)
 884                 find_dir_in_subdirs(cgroup_devices_base, NULL, found_subdir_in_dir);
 885
 886         // remove any non-existing cgroups
 887         cleanup_all_cgroups();
 888
 889         struct cgroup *cg;
 890         struct stat buf;
 891         for(cg = cgroup_root; cg ; cg = cg->next) {
 892                 // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
 893
 894                 if(unlikely(!cg->available))
 895                         continue;
 896
 897                 debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id);
 898
 899                 // check for newly added cgroups
 900                 // and update the filenames they read
 901                 char filename[FILENAME_MAX + 1];
 902                 if(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename) {
 903                         snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
 904                         if(stat(filename, &buf) != -1) {
 905                                 cg->cpuacct_stat.filename = strdupz(filename);
 906                                 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
 907                         }
 908                         else debug(D_CGROUP, "cpuacct.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 909                 }
 910                 if(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename) {
 911                         snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
 912                         if(stat(filename, &buf) != -1) {
 913                                 cg->cpuacct_usage.filename = strdupz(filename);
 914                                 debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename);
 915                         }
 916                         else debug(D_CGROUP, "cpuacct.usage_percpu file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 917                 }
 918                 if(cgroup_enable_memory && !cg->memory.filename) {
 919                         snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
 920                         if(stat(filename, &buf) != -1) {
 921                                 cg->memory.filename = strdupz(filename);
 922                                 debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename);
 923                         }
 924                         else debug(D_CGROUP, "memory.stat file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 925                 }
 926                 if(cgroup_enable_blkio) {
 927                         if(!cg->io_service_bytes.filename) {
 928                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
 929                                 if(stat(filename, &buf) != -1) {
 930                                         cg->io_service_bytes.filename = strdupz(filename);
 931                                         debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename);
 932                                 }
 933                                 else debug(D_CGROUP, "io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 934                         }
 935                         if(!cg->io_serviced.filename) {
 936                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
 937                                 if(stat(filename, &buf) != -1) {
 938                                         cg->io_serviced.filename = strdupz(filename);
 939                                         debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename);
 940                                 }
 941                                 else debug(D_CGROUP, "io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 942                         }
 943                         if(!cg->throttle_io_service_bytes.filename) {
 944                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
 945                                 if(stat(filename, &buf) != -1) {
 946                                         cg->throttle_io_service_bytes.filename = strdupz(filename);
 947                                         debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename);
 948                                 }
 949                                 else debug(D_CGROUP, "throttle_io_service_bytes file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 950                         }
 951                         if(!cg->throttle_io_serviced.filename) {
 952                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
 953                                 if(stat(filename, &buf) != -1) {
 954                                         cg->throttle_io_serviced.filename = strdupz(filename);
 955                                         debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename);
 956                                 }
 957                                 else debug(D_CGROUP, "throttle_io_serviced file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 958                         }
 959                         if(!cg->io_merged.filename) {
 960                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
 961                                 if(stat(filename, &buf) != -1) {
 962                                         cg->io_merged.filename = strdupz(filename);
 963                                         debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename);
 964                                 }
 965                                 else debug(D_CGROUP, "io_merged file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 966                         }
 967                         if(!cg->io_queued.filename) {
 968                                 snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
 969                                 if(stat(filename, &buf) != -1) {
 970                                         cg->io_queued.filename = strdupz(filename);
 971                                         debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename);
 972                                 }
 973                                 else debug(D_CGROUP, "io_queued file for cgroup '%s': '%s' does not exist.", cg->id, filename);
 974                         }
 975                 }
 976         }
 977
 978         debug(D_CGROUP, "done searching for cgroups");
 979         return;
 980 }
 981
 982 // ----------------------------------------------------------------------------
 983 // generate charts
 984
 985 #define CHART_TITLE_MAX 300
 986
 987 void update_cgroup_charts(int update_every) {
 988         debug(D_CGROUP, "updating cgroups charts");
 989
 990         char type[RRD_ID_LENGTH_MAX + 1];
 991         char title[CHART_TITLE_MAX + 1];
 992
 993         struct cgroup *cg;
 994         RRDSET *st;
 995
 996         for(cg = cgroup_root; cg ; cg = cg->next) {
 997                 if(!cg->available || !cg->enabled)
 998                         continue;
 999
1000                 if(cg->id[0] == '\0')
1001                         strcpy(type, "cgroup_root");
1002                 else if(cg->id[0] == '/')
1003                         snprintfz(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
1004                 else
1005                         snprintfz(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
1006
1007                 netdata_fix_chart_id(type);
1008
1009                 if(cg->cpuacct_stat.updated) {
1010                         st = rrdset_find_bytype(type, "cpu");
1011                         if(!st) {
1012                                 snprintfz(title, CHART_TITLE_MAX, "CPU Usage for cgroup %s", cg->chart_title);
1013                                 st = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", 40000, update_every, RRDSET_TYPE_STACKED);
1014
1015                                 rrddim_add(st, "user", NULL, 100, hz, RRDDIM_INCREMENTAL);
1016                                 rrddim_add(st, "system", NULL, 100, hz, RRDDIM_INCREMENTAL);
1017                         }
1018                         else rrdset_next(st);
1019
1020                         rrddim_set(st, "user", cg->cpuacct_stat.user);
1021                         rrddim_set(st, "system", cg->cpuacct_stat.system);
1022                         rrdset_done(st);
1023                 }
1024
1025                 if(cg->cpuacct_usage.updated) {
1026                         char id[RRD_ID_LENGTH_MAX + 1];
1027                         unsigned int i;
1028
1029                         st = rrdset_find_bytype(type, "cpu_per_core");
1030                         if(!st) {
1031                                 snprintfz(title, CHART_TITLE_MAX, "CPU Usage Per Core for cgroup %s", cg->chart_title);
1032                                 st = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", 40100, update_every, RRDSET_TYPE_STACKED);
1033
1034                                 for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1035                                         snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1036                                         rrddim_add(st, id, NULL, 100, 1000000000, RRDDIM_INCREMENTAL);
1037                                 }
1038                         }
1039                         else rrdset_next(st);
1040
1041                         for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1042                                 snprintfz(id, CHART_TITLE_MAX, "cpu%u", i);
1043                                 rrddim_set(st, id, cg->cpuacct_usage.cpu_percpu[i]);
1044                         }
1045                         rrdset_done(st);
1046                 }
1047
1048                 if(cg->memory.updated) {
1049                         if(cg->memory.cache + cg->memory.rss + cg->memory.rss_huge + cg->memory.mapped_file > 0) {
1050                                 st = rrdset_find_bytype(type, "mem");
1051                                 if(!st) {
1052                                         snprintfz(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title);
1053                                         st = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", 40200, update_every,
1054                                                            RRDSET_TYPE_STACKED);
1055
1056                                         rrddim_add(st, "cache", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1057                                         rrddim_add(st, "rss", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1058                                         if(cg->memory.has_dirty_swap)
1059                                                 rrddim_add(st, "swap", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1060                                         rrddim_add(st, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1061                                         rrddim_add(st, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1062                                 }
1063                                 else rrdset_next(st);
1064
1065                                 rrddim_set(st, "cache", cg->memory.cache);
1066                                 rrddim_set(st, "rss", cg->memory.rss);
1067                                 if(cg->memory.has_dirty_swap)
1068                                         rrddim_set(st, "swap", cg->memory.swap);
1069                                 rrddim_set(st, "rss_huge", cg->memory.rss_huge);
1070                                 rrddim_set(st, "mapped_file", cg->memory.mapped_file);
1071                                 rrdset_done(st);
1072                         }
1073
1074                         st = rrdset_find_bytype(type, "writeback");
1075                         if(!st) {
1076                                 snprintfz(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title);
1077                                 st = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300,
1078                                                    update_every, RRDSET_TYPE_AREA);
1079
1080                                 if(cg->memory.has_dirty_swap)
1081                                         rrddim_add(st, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1082                                 rrddim_add(st, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1083                         }
1084                         else rrdset_next(st);
1085
1086                         if(cg->memory.has_dirty_swap)
1087                                 rrddim_set(st, "dirty", cg->memory.dirty);
1088                         rrddim_set(st, "writeback", cg->memory.writeback);
1089                         rrdset_done(st);
1090
1091                         if(cg->memory.pgpgin + cg->memory.pgpgout > 0) {
1092                                 st = rrdset_find_bytype(type, "mem_activity");
1093                                 if(!st) {
1094                                         snprintfz(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title);
1095                                         st = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s",
1096                                                            40400, update_every, RRDSET_TYPE_LINE);
1097
1098                                         rrddim_add(st, "pgpgin", "in", sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1099                                         rrddim_add(st, "pgpgout", "out", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1100                                 }
1101                                 else rrdset_next(st);
1102
1103                                 rrddim_set(st, "pgpgin", cg->memory.pgpgin);
1104                                 rrddim_set(st, "pgpgout", cg->memory.pgpgout);
1105                                 rrdset_done(st);
1106                         }
1107
1108                         if(cg->memory.pgfault + cg->memory.pgmajfault > 0) {
1109                                 st = rrdset_find_bytype(type, "pgfaults");
1110                                 if(!st) {
1111                                         snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title);
1112                                         st = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", 40500,
1113                                                            update_every, RRDSET_TYPE_LINE);
1114
1115                                         rrddim_add(st, "pgfault", NULL, sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1116                                         rrddim_add(st, "pgmajfault", "swap", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1117                                 }
1118                                 else rrdset_next(st);
1119
1120                                 rrddim_set(st, "pgfault", cg->memory.pgfault);
1121                                 rrddim_set(st, "pgmajfault", cg->memory.pgmajfault);
1122                                 rrdset_done(st);
1123                         }
1124                 }
1125
1126                 if(cg->io_service_bytes.updated && cg->io_service_bytes.Read + cg->io_service_bytes.Write > 0) {
1127                         st = rrdset_find_bytype(type, "io");
1128                         if(!st) {
1129                                 snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1130                                 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1131                                                    update_every, RRDSET_TYPE_LINE);
1132
1133                                 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1134                                 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1135                         }
1136                         else rrdset_next(st);
1137
1138                         rrddim_set(st, "read", cg->io_service_bytes.Read);
1139                         rrddim_set(st, "write", cg->io_service_bytes.Write);
1140                         rrdset_done(st);
1141                 }
1142
1143                 if(cg->io_serviced.updated && cg->io_serviced.Read + cg->io_serviced.Write > 0) {
1144                         st = rrdset_find_bytype(type, "serviced_ops");
1145                         if(!st) {
1146                                 snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1147                                 st = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.serviced_ops", title, "operations/s", 41200,
1148                                                    update_every, RRDSET_TYPE_LINE);
1149
1150                                 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1151                                 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1152                         }
1153                         else rrdset_next(st);
1154
1155                         rrddim_set(st, "read", cg->io_serviced.Read);
1156                         rrddim_set(st, "write", cg->io_serviced.Write);
1157                         rrdset_done(st);
1158                 }
1159
1160                 if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.Read + cg->throttle_io_service_bytes.Write > 0) {
1161                         st = rrdset_find_bytype(type, "io");
1162                         if(!st) {
1163                                 snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1164                                 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1165                                                    update_every, RRDSET_TYPE_LINE);
1166
1167                                 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1168                                 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1169                         }
1170                         else rrdset_next(st);
1171
1172                         rrddim_set(st, "read", cg->throttle_io_service_bytes.Read);
1173                         rrddim_set(st, "write", cg->throttle_io_service_bytes.Write);
1174                         rrdset_done(st);
1175                 }
1176
1177
1178                 if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.Read + cg->throttle_io_serviced.Write > 0) {
1179                         st = rrdset_find_bytype(type, "throttle_serviced_ops");
1180                         if(!st) {
1181                                 snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1182                                 st = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", 41200,
1183                                                    update_every, RRDSET_TYPE_LINE);
1184
1185                                 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1186                                 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1187                         }
1188                         else rrdset_next(st);
1189
1190                         rrddim_set(st, "read", cg->throttle_io_serviced.Read);
1191                         rrddim_set(st, "write", cg->throttle_io_serviced.Write);
1192                         rrdset_done(st);
1193                 }
1194
1195                 if(cg->io_queued.updated) {
1196                         st = rrdset_find_bytype(type, "queued_ops");
1197                         if(!st) {
1198                                 snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title);
1199                                 st = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", 42000,
1200                                                    update_every, RRDSET_TYPE_LINE);
1201
1202                                 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_ABSOLUTE);
1203                                 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_ABSOLUTE);
1204                         }
1205                         else rrdset_next(st);
1206
1207                         rrddim_set(st, "read", cg->io_queued.Read);
1208                         rrddim_set(st, "write", cg->io_queued.Write);
1209                         rrdset_done(st);
1210                 }
1211
1212                 if(cg->io_merged.updated && cg->io_merged.Read + cg->io_merged.Write > 0) {
1213                         st = rrdset_find_bytype(type, "merged_ops");
1214                         if(!st) {
1215                                 snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title);
1216                                 st = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", 42100,
1217                                                    update_every, RRDSET_TYPE_LINE);
1218
1219                                 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1220                                 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1221                         }
1222                         else rrdset_next(st);
1223
1224                         rrddim_set(st, "read", cg->io_merged.Read);
1225                         rrddim_set(st, "write", cg->io_merged.Write);
1226                         rrdset_done(st);
1227                 }
1228         }
1229
1230         debug(D_CGROUP, "done updating cgroups charts");
1231 }
1232
1233 // ----------------------------------------------------------------------------
1234 // cgroups main
1235
1236 int do_sys_fs_cgroup(int update_every, unsigned long long dt) {
1237         (void)dt;
1238
1239         static int cgroup_global_config_read = 0;
1240         static time_t last_run = 0;
1241         time_t now = time(NULL);
1242
1243         if(unlikely(!cgroup_global_config_read)) {
1244                 read_cgroup_plugin_configuration();
1245                 cgroup_global_config_read = 1;
1246         }
1247
1248         if(unlikely(cgroup_enable_new_cgroups_detected_at_runtime && now - last_run > cgroup_check_for_new_every)) {
1249                 find_all_cgroups();
1250                 last_run = now;
1251         }
1252
1253         read_all_cgroups(cgroup_root);
1254         update_cgroup_charts(update_every);
1255
1256         return 0;
1257 }
1258
1259 void *cgroups_main(void *ptr)
1260 {
1261         if(ptr) { ; }
1262
1263         info("CGROUP Plugin thread created with task id %d", gettid());
1264
1265         if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
1266                 error("Cannot set pthread cancel type to DEFERRED.");
1267
1268         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
1269                 error("Cannot set pthread cancel state to ENABLE.");
1270
1271         struct rusage thread;
1272
1273         // when ZERO, attempt to do it
1274         int vdo_sys_fs_cgroup                   = 0;
1275         int vdo_cpu_netdata                     = !config_get_boolean("plugin:cgroups", "cgroups plugin resources", 1);
1276
1277         // keep track of the time each module was called
1278         unsigned long long sutime_sys_fs_cgroup = 0ULL;
1279
1280         // the next time we will run - aligned properly
1281         unsigned long long sunext = (time(NULL) - (time(NULL) % rrd_update_every) + rrd_update_every) * 1000000ULL;
1282         unsigned long long sunow;
1283
1284         RRDSET *stcpu_thread = NULL;
1285
1286         for(;1;) {
1287                 if(unlikely(netdata_exit)) break;
1288
1289                 // delay until it is our time to run
1290                 while((sunow = timems()) < sunext)
1291                         usecsleep(sunext - sunow);
1292
1293                 // find the next time we need to run
1294                 while(timems() > sunext)
1295                         sunext += rrd_update_every * 1000000ULL;
1296
1297                 if(unlikely(netdata_exit)) break;
1298
1299                 // BEGIN -- the job to be done
1300
1301                 if(!vdo_sys_fs_cgroup) {
1302                         debug(D_PROCNETDEV_LOOP, "PROCNETDEV: calling do_sys_fs_cgroup().");
1303                         sunow = timems();
1304                         vdo_sys_fs_cgroup = do_sys_fs_cgroup(rrd_update_every, (sutime_sys_fs_cgroup > 0)?sunow - sutime_sys_fs_cgroup:0ULL);
1305                         sutime_sys_fs_cgroup = sunow;
1306                 }
1307                 if(unlikely(netdata_exit)) break;
1308
1309                 // END -- the job is done
1310
1311                 // --------------------------------------------------------------------
1312
1313                 if(!vdo_cpu_netdata) {
1314                         getrusage(RUSAGE_THREAD, &thread);
1315
1316                         if(!stcpu_thread) stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu");
1317                         if(!stcpu_thread) {
1318                                 stcpu_thread = rrdset_create("netdata", "plugin_cgroups_cpu", NULL, "proc.internal", NULL, "NetData CGroups Plugin CPU usage", "milliseconds/s", 132000, rrd_update_every, RRDSET_TYPE_STACKED);
1319
1320                                 rrddim_add(stcpu_thread, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
1321                                 rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1322                         }
1323                         else rrdset_next(stcpu_thread);
1324
1325                         rrddim_set(stcpu_thread, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
1326                         rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
1327                         rrdset_done(stcpu_thread);
1328                 }
1329         }
1330
1331         pthread_exit(NULL);
1332         return NULL;
1333 }