src/sys_fs_cgroup.c

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