13 #include "appconfig.h"
19 #include "proc_self_mountinfo.h"
21 // ----------------------------------------------------------------------------
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;
34 static int cgroup_root_count = 0;
35 static int cgroup_root_max = 50;
36 static int cgroup_max_depth = 0;
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);
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);
46 char filename[FILENAME_MAX + 1], *s;
47 struct mountinfo *mi, *root = mountinfo_read();
49 mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct");
50 if(!mi) s = "/sys/fs/cgroup/cpuacct";
51 else s = mi->mount_point;
52 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
53 cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
55 mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
56 if(!mi) s = "/sys/fs/cgroup/blkio";
57 else s = mi->mount_point;
58 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
59 cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
61 mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory");
62 if(!mi) s = "/sys/fs/cgroup/memory";
63 else s = mi->mount_point;
64 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
65 cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
67 cgroup_root_max = config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
68 cgroup_max_depth = config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
70 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);
75 // ----------------------------------------------------------------------------
83 unsigned long long Read;
84 unsigned long long Write;
86 unsigned long long Sync;
87 unsigned long long Async;
88 unsigned long long Total;
92 // https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
100 unsigned long long cache;
101 unsigned long long rss;
102 unsigned long long rss_huge;
103 unsigned long long mapped_file;
104 unsigned long long writeback;
105 unsigned long long dirty;
106 unsigned long long swap;
107 unsigned long long pgpgin;
108 unsigned long long pgpgout;
109 unsigned long long pgfault;
110 unsigned long long pgmajfault;
112 unsigned long long inactive_anon;
113 unsigned long long active_anon;
114 unsigned long long inactive_file;
115 unsigned long long active_file;
116 unsigned long long unevictable;
117 unsigned long long hierarchical_memory_limit;
118 unsigned long long total_cache;
119 unsigned long long total_rss;
120 unsigned long long total_rss_huge;
121 unsigned long long total_mapped_file;
122 unsigned long long total_writeback;
123 unsigned long long total_dirty;
124 unsigned long long total_swap;
125 unsigned long long total_pgpgin;
126 unsigned long long total_pgpgout;
127 unsigned long long total_pgfault;
128 unsigned long long total_pgmajfault;
129 unsigned long long total_inactive_anon;
130 unsigned long long total_active_anon;
131 unsigned long long total_inactive_file;
132 unsigned long long total_active_file;
133 unsigned long long total_unevictable;
137 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
138 struct cpuacct_stat {
143 unsigned long long user;
144 unsigned long long system;
147 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
148 struct cpuacct_usage {
154 unsigned long long *cpu_percpu;
158 int available; // found in the filesystem
159 int enabled; // enabled in the config
166 struct cpuacct_stat cpuacct_stat;
167 struct cpuacct_usage cpuacct_usage;
169 struct memory memory;
171 struct blkio io_service_bytes; // bytes
172 struct blkio io_serviced; // operations
174 struct blkio throttle_io_service_bytes; // bytes
175 struct blkio throttle_io_serviced; // operations
177 struct blkio io_merged; // operations
178 struct blkio io_queued; // operations
182 } *cgroup_root = NULL;
184 // ----------------------------------------------------------------------------
185 // read values from /sys
187 void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
188 static procfile *ff = NULL;
190 static uint32_t user_hash = 0;
191 static uint32_t system_hash = 0;
193 if(unlikely(user_hash == 0)) {
194 user_hash = simple_hash("user");
195 system_hash = simple_hash("system");
200 ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
203 ff = procfile_readall(ff);
206 unsigned long i, lines = procfile_lines(ff);
209 error("File '%s' should have 1+ lines.", cp->filename);
213 for(i = 0; i < lines ; i++) {
214 char *s = procfile_lineword(ff, i, 0);
215 uint32_t hash = simple_hash(s);
217 if(hash == user_hash && !strcmp(s, "user"))
218 cp->user = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
220 else if(hash == system_hash && !strcmp(s, "system"))
221 cp->system = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
226 // fprintf(stderr, "READ '%s': user: %llu, system: %llu\n", cp->filename, cp->user, cp->system);
230 void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
231 static procfile *ff = NULL;
235 ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
238 ff = procfile_readall(ff);
241 if(procfile_lines(ff) < 1) {
242 error("File '%s' should have 1+ lines but has %d.", ca->filename, procfile_lines(ff));
246 unsigned long i = procfile_linewords(ff, 0);
249 // we may have 1 more CPU reported
251 char *s = procfile_lineword(ff, 0, i - 1);
257 free(ca->cpu_percpu);
259 ca->cpu_percpu = malloc(sizeof(unsigned long long) * i);
261 fatal("Cannot allocate memory (%z bytes)", sizeof(unsigned long long) * i);
266 for(i = 0; i < ca->cpus ;i++) {
267 ca->cpu_percpu[i] = strtoull(procfile_lineword(ff, 0, i), NULL, 10);
268 // fprintf(stderr, "READ '%s': cpu%d/%d: %llu ('%s')\n", ca->filename, i, ca->cpus, ca->cpu_percpu[i], procfile_lineword(ff, 0, i));
275 void cgroup_read_blkio(struct blkio *io) {
276 static procfile *ff = NULL;
278 static uint32_t Read_hash = 0;
279 static uint32_t Write_hash = 0;
281 static uint32_t Sync_hash = 0;
282 static uint32_t Async_hash = 0;
283 static uint32_t Total_hash = 0;
286 if(unlikely(Read_hash == 0)) {
287 Read_hash = simple_hash("Read");
288 Write_hash = simple_hash("Write");
290 Sync_hash = simple_hash("Sync");
291 Async_hash = simple_hash("Async");
292 Total_hash = simple_hash("Total");
298 ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
301 ff = procfile_readall(ff);
304 unsigned long i, lines = procfile_lines(ff);
307 error("File '%s' should have 1+ lines.", io->filename);
319 for(i = 0; i < lines ; i++) {
320 char *s = procfile_lineword(ff, i, 1);
321 uint32_t hash = simple_hash(s);
323 if(hash == Read_hash && !strcmp(s, "Read"))
324 io->Read += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
326 else if(hash == Write_hash && !strcmp(s, "Write"))
327 io->Write += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
330 else if(hash == Sync_hash && !strcmp(s, "Sync"))
331 io->Sync += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
333 else if(hash == Async_hash && !strcmp(s, "Async"))
334 io->Async += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
336 else if(hash == Total_hash && !strcmp(s, "Total"))
337 io->Total += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
342 // 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 void cgroup_read_memory(struct memory *mem) {
347 static procfile *ff = NULL;
349 static uint32_t cache_hash = 0;
350 static uint32_t rss_hash = 0;
351 static uint32_t rss_huge_hash = 0;
352 static uint32_t mapped_file_hash = 0;
353 static uint32_t writeback_hash = 0;
354 static uint32_t dirty_hash = 0;
355 static uint32_t swap_hash = 0;
356 static uint32_t pgpgin_hash = 0;
357 static uint32_t pgpgout_hash = 0;
358 static uint32_t pgfault_hash = 0;
359 static uint32_t pgmajfault_hash = 0;
361 static uint32_t inactive_anon_hash = 0;
362 static uint32_t active_anon_hash = 0;
363 static uint32_t inactive_file_hash = 0;
364 static uint32_t active_file_hash = 0;
365 static uint32_t unevictable_hash = 0;
366 static uint32_t hierarchical_memory_limit_hash = 0;
367 static uint32_t total_cache_hash = 0;
368 static uint32_t total_rss_hash = 0;
369 static uint32_t total_rss_huge_hash = 0;
370 static uint32_t total_mapped_file_hash = 0;
371 static uint32_t total_writeback_hash = 0;
372 static uint32_t total_dirty_hash = 0;
373 static uint32_t total_swap_hash = 0;
374 static uint32_t total_pgpgin_hash = 0;
375 static uint32_t total_pgpgout_hash = 0;
376 static uint32_t total_pgfault_hash = 0;
377 static uint32_t total_pgmajfault_hash = 0;
378 static uint32_t total_inactive_anon_hash = 0;
379 static uint32_t total_active_anon_hash = 0;
380 static uint32_t total_inactive_file_hash = 0;
381 static uint32_t total_active_file_hash = 0;
382 static uint32_t total_unevictable_hash = 0;
384 if(unlikely(cache_hash == 0)) {
385 cache_hash = simple_hash("cache");
386 rss_hash = simple_hash("rss");
387 rss_huge_hash = simple_hash("rss_huge");
388 mapped_file_hash = simple_hash("mapped_file");
389 writeback_hash = simple_hash("writeback");
390 dirty_hash = simple_hash("dirty");
391 swap_hash = simple_hash("swap");
392 pgpgin_hash = simple_hash("pgpgin");
393 pgpgout_hash = simple_hash("pgpgout");
394 pgfault_hash = simple_hash("pgfault");
395 pgmajfault_hash = simple_hash("pgmajfault");
397 inactive_anon_hash = simple_hash("inactive_anon");
398 active_anon_hash = simple_hash("active_anon");
399 inactive_file_hash = simple_hash("inactive_file");
400 active_file_hash = simple_hash("active_file");
401 unevictable_hash = simple_hash("unevictable");
402 hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
403 total_cache_hash = simple_hash("total_cache");
404 total_rss_hash = simple_hash("total_rss");
405 total_rss_huge_hash = simple_hash("total_rss_huge");
406 total_mapped_file_hash = simple_hash("total_mapped_file");
407 total_writeback_hash = simple_hash("total_writeback");
408 total_dirty_hash = simple_hash("total_dirty");
409 total_swap_hash = simple_hash("total_swap");
410 total_pgpgin_hash = simple_hash("total_pgpgin");
411 total_pgpgout_hash = simple_hash("total_pgpgout");
412 total_pgfault_hash = simple_hash("total_pgfault");
413 total_pgmajfault_hash = simple_hash("total_pgmajfault");
414 total_inactive_anon_hash = simple_hash("total_inactive_anon");
415 total_active_anon_hash = simple_hash("total_active_anon");
416 total_inactive_file_hash = simple_hash("total_inactive_file");
417 total_active_file_hash = simple_hash("total_active_file");
418 total_unevictable_hash = simple_hash("total_unevictable");
424 ff = procfile_reopen(ff, mem->filename, NULL, PROCFILE_FLAG_DEFAULT);
427 ff = procfile_readall(ff);
430 unsigned long i, lines = procfile_lines(ff);
433 error("File '%s' should have 1+ lines.", mem->filename);
437 for(i = 0; i < lines ; i++) {
438 char *s = procfile_lineword(ff, i, 0);
439 uint32_t hash = simple_hash(s);
441 if(hash == cache_hash && !strcmp(s, "cache"))
442 mem->cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
444 else if(hash == rss_hash && !strcmp(s, "rss"))
445 mem->rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
447 else if(hash == rss_huge_hash && !strcmp(s, "rss_huge"))
448 mem->rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
450 else if(hash == mapped_file_hash && !strcmp(s, "mapped_file"))
451 mem->mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
453 else if(hash == writeback_hash && !strcmp(s, "writeback"))
454 mem->writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
456 else if(hash == dirty_hash && !strcmp(s, "dirty")) {
457 mem->dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
458 mem->has_dirty_swap = 1;
461 else if(hash == swap_hash && !strcmp(s, "swap")) {
462 mem->swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
463 mem->has_dirty_swap = 1;
466 else if(hash == pgpgin_hash && !strcmp(s, "pgpgin"))
467 mem->pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
469 else if(hash == pgpgout_hash && !strcmp(s, "pgpgout"))
470 mem->pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
472 else if(hash == pgfault_hash && !strcmp(s, "pgfault"))
473 mem->pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
475 else if(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))
476 mem->pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
479 else if(hash == inactive_anon_hash && !strcmp(s, "inactive_anon"))
480 mem->inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
482 else if(hash == active_anon_hash && !strcmp(s, "active_anon"))
483 mem->active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
485 else if(hash == inactive_file_hash && !strcmp(s, "inactive_file"))
486 mem->inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
488 else if(hash == active_file_hash && !strcmp(s, "active_file"))
489 mem->active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
491 else if(hash == unevictable_hash && !strcmp(s, "unevictable"))
492 mem->unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
494 else if(hash == hierarchical_memory_limit_hash && !strcmp(s, "hierarchical_memory_limit"))
495 mem->hierarchical_memory_limit = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
497 else if(hash == total_cache_hash && !strcmp(s, "total_cache"))
498 mem->total_cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
500 else if(hash == total_rss_hash && !strcmp(s, "total_rss"))
501 mem->total_rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
503 else if(hash == total_rss_huge_hash && !strcmp(s, "total_rss_huge"))
504 mem->total_rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
506 else if(hash == total_mapped_file_hash && !strcmp(s, "total_mapped_file"))
507 mem->total_mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
509 else if(hash == total_writeback_hash && !strcmp(s, "total_writeback"))
510 mem->total_writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
512 else if(hash == total_dirty_hash && !strcmp(s, "total_dirty"))
513 mem->total_dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
515 else if(hash == total_swap_hash && !strcmp(s, "total_swap"))
516 mem->total_swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
518 else if(hash == total_pgpgin_hash && !strcmp(s, "total_pgpgin"))
519 mem->total_pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
521 else if(hash == total_pgpgout_hash && !strcmp(s, "total_pgpgout"))
522 mem->total_pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
524 else if(hash == total_pgfault_hash && !strcmp(s, "total_pgfault"))
525 mem->total_pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
527 else if(hash == total_pgmajfault_hash && !strcmp(s, "total_pgmajfault"))
528 mem->total_pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
530 else if(hash == total_inactive_anon_hash && !strcmp(s, "total_inactive_anon"))
531 mem->total_inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
533 else if(hash == total_active_anon_hash && !strcmp(s, "total_active_anon"))
534 mem->total_active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
536 else if(hash == total_inactive_file_hash && !strcmp(s, "total_inactive_file"))
537 mem->total_inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
539 else if(hash == total_active_file_hash && !strcmp(s, "total_active_file"))
540 mem->total_active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
542 else if(hash == total_unevictable_hash && !strcmp(s, "total_unevictable"))
543 mem->total_unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
547 // 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);
553 void cgroup_read(struct cgroup *cg) {
554 debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
556 cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
557 cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
558 cgroup_read_memory(&cg->memory);
559 cgroup_read_blkio(&cg->io_service_bytes);
560 cgroup_read_blkio(&cg->io_serviced);
561 cgroup_read_blkio(&cg->throttle_io_service_bytes);
562 cgroup_read_blkio(&cg->throttle_io_serviced);
563 cgroup_read_blkio(&cg->io_merged);
564 cgroup_read_blkio(&cg->io_queued);
567 void read_all_cgroups(struct cgroup *root) {
568 debug(D_CGROUP, "reading metrics for all cgroups");
572 for(cg = root; cg ; cg = cg->next)
573 if(cg->enabled && cg->available)
577 // ----------------------------------------------------------------------------
578 // add/remove/find cgroup objects
580 #define CGROUP_CHARTID_LINE_MAX 1024
582 void cgroup_get_chart_id(struct cgroup *cg) {
583 debug(D_CGROUP, "getting the name of cgroup '%s'", cg->id);
586 char buffer[CGROUP_CHARTID_LINE_MAX + 1];
588 snprintf(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'",
589 config_get("plugin:cgroups", "script to get cgroup names", PLUGINS_DIR "/cgroup-name.sh"), cg->chart_id);
591 debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
592 FILE *fp = mypopen(buffer, &cgroup_pid);
594 error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer);
597 debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
598 char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
599 debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
600 mypclose(fp, cgroup_pid);
601 debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
603 if(s && *s && *s != '\n') {
604 debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
607 netdata_fix_chart_id(s);
609 cg->chart_id = strdup(s);
611 fatal("CGROUP: Cannot allocate memory for chart id of cgroup '%s' chart id: '%s'", cg->id, s);
613 debug(D_CGROUP, "cgroup '%s' renamed to '%s'", cg->id, cg->chart_id);
615 else debug(D_CGROUP, "cgroup '%s' is not to be renamed (will be shown as '%s')", cg->id, cg->chart_id);
618 struct cgroup *cgroup_add(const char *id) {
619 debug(D_CGROUP, "adding cgroup '%s'", id);
621 if(cgroup_root_count >= cgroup_root_max) {
622 info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
626 int def = cgroup_enable_new_cgroups_detected_at_runtime;
627 const char *chart_id = id;
631 // disable by default the host cgroup
633 debug(D_CGROUP, "cgroup '%s' is the host container (by default %s)", id, (def)?"enabled":"disabled");
636 if(*chart_id == '/') chart_id++;
638 // disable by default the parent cgroup
639 // for known cgroup managers
640 if(!strcmp(chart_id, "lxc") ||
641 !strcmp(chart_id, "docker") ||
642 !strcmp(chart_id, "systemd") ||
643 !strncmp(chart_id, "user.slice", 10) ||
644 !strncmp(chart_id, "system.slice", 12)
647 debug(D_CGROUP, "cgroup '%s' is container manager (by default %s)", id, (def)?"enabled":"disabled");
651 struct cgroup *cg = calloc(1, sizeof(struct cgroup));
652 if(!cg) fatal("Cannot allocate memory for cgroup '%s'", id);
654 debug(D_CGROUP, "adding cgroup '%s'", id);
657 if(!cg->id) fatal("Cannot allocate memory for cgroup '%s'", id);
659 cg->hash = simple_hash(cg->id);
661 cg->chart_id = strdup(chart_id);
662 if(!cg->chart_id) fatal("Cannot allocate memory for cgroup '%s'", id);
669 for(e = cgroup_root; e->next ;e = e->next) ;
675 // fix the name by calling the external script
676 cgroup_get_chart_id(cg);
678 char option[FILENAME_MAX + 1];
679 snprintf(option, FILENAME_MAX, "enable cgroup %s", chart_id);
680 cg->enabled = config_get_boolean("plugin:cgroups", option, def);
683 // switch this to debug(D_CGROUP, ...
684 info("Added cgroup '%s' with chart id '%s' as %s (default was %s)", cg->id, cg->chart_id, (cg->enabled)?"enabled":"disabled", (def)?"enabled":"disabled");
689 void cgroup_remove(struct cgroup *cg) {
690 debug(D_CGROUP, "removing cgroup '%s'", cg->id);
693 // switch this to debug(D_CGROUP, ...
694 info("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");
696 if(cg == cgroup_root) {
697 cgroup_root = cg->next;
701 for(e = cgroup_root; e->next ;e = e->next)
702 if(unlikely(e->next == cg)) break;
705 error("Cannot find cgroup '%s' in list of cgroups", cg->id);
713 free(cg->cpuacct_usage.cpu_percpu);
715 free(cg->cpuacct_stat.filename);
716 free(cg->cpuacct_usage.filename);
717 free(cg->memory.filename);
718 free(cg->io_service_bytes.filename);
719 free(cg->io_serviced.filename);
720 free(cg->throttle_io_service_bytes.filename);
721 free(cg->throttle_io_serviced.filename);
722 free(cg->io_merged.filename);
723 free(cg->io_queued.filename);
732 // find if a given cgroup exists
733 struct cgroup *cgroup_find(const char *id) {
734 debug(D_CGROUP, "searching for cgroup '%s'", id);
736 uint32_t hash = simple_hash(id);
739 for(cg = cgroup_root; cg ; cg = cg->next) {
740 if(hash == cg->hash && strcmp(id, cg->id) == 0)
744 debug(D_CGROUP, "cgroup_find('%s') %s", id, (cg)?"found":"not found");
748 // ----------------------------------------------------------------------------
749 // detect running cgroups
751 // callback for find_file_in_subdirs()
752 void found_dir_in_subdir(const char *dir) {
753 debug(D_CGROUP, "examining cgroup dir '%s'", dir);
755 struct cgroup *cg = cgroup_find(dir);
757 if(*dir && cgroup_max_depth > 0) {
761 for(s = dir; *s ;s++)
762 if(unlikely(*s == '/'))
765 if(depth > cgroup_max_depth) {
766 info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
770 debug(D_CGROUP, "will add dir '%s' as cgroup", dir);
771 cg = cgroup_add(dir);
774 if(cg) cg->available = 1;
777 void find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
779 if(!this) this = base;
780 size_t dirlen = strlen(this), baselen = strlen(base);
782 DIR *dir = opendir(this);
785 callback(&this[baselen]);
787 struct dirent *de = NULL;
788 while((de = readdir(dir))) {
789 if(de->d_type == DT_DIR
791 (de->d_name[0] == '.' && de->d_name[1] == '\0')
792 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
796 debug(D_CGROUP, "examining '%s/%s'", this, de->d_name);
798 if(de->d_type == DT_DIR) {
800 // we check for this option here
801 // so that the config will not have settings
802 // for leaf directories
803 char option[FILENAME_MAX + 1];
804 snprintf(option, FILENAME_MAX, "search for cgroups under %s", (this == base)?"/":this);
807 if(!strcmp(this, "system.slice") ||
808 !strcmp(this, "user.slice") ||
809 !strcmp(this, "systemd"))
812 enabled = config_get_boolean("plugin:cgroups", option, def);
816 char *s = malloc(dirlen + strlen(de->d_name) + 2);
820 strcat(s, de->d_name);
821 find_dir_in_subdirs(base, s, callback);
831 void mark_all_cgroups_as_not_available() {
832 debug(D_CGROUP, "marking all cgroups as not available");
836 // mark all as not available
837 for(cg = cgroup_root; cg ; cg = cg->next)
841 struct cgroup *find_all_cgroups() {
842 debug(D_CGROUP, "searching for cgroups");
844 mark_all_cgroups_as_not_available();
846 if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage)
847 find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_dir_in_subdir);
849 if(cgroup_enable_blkio)
850 find_dir_in_subdirs(cgroup_blkio_base, NULL, found_dir_in_subdir);
852 if(cgroup_enable_memory)
853 find_dir_in_subdirs(cgroup_memory_base, NULL, found_dir_in_subdir);
856 for(cg = cgroup_root; cg ; cg = cg->next) {
857 // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
864 debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id);
866 // check for newly added cgroups
867 // and update the filenames they read
868 char filename[FILENAME_MAX + 1];
869 if(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename) {
870 snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
871 cg->cpuacct_stat.filename = strdup(filename);
872 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
874 if(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename) {
875 snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
876 cg->cpuacct_usage.filename = strdup(filename);
877 debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename);
879 if(cgroup_enable_memory && !cg->memory.filename) {
880 snprintf(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
881 cg->memory.filename = strdup(filename);
882 debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename);
884 if(cgroup_enable_blkio) {
885 if(!cg->io_service_bytes.filename) {
886 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
887 cg->io_service_bytes.filename = strdup(filename);
888 debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename);
890 if(!cg->io_serviced.filename) {
891 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
892 cg->io_serviced.filename = strdup(filename);
893 debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename);
895 if(!cg->throttle_io_service_bytes.filename) {
896 snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
897 cg->throttle_io_service_bytes.filename = strdup(filename);
898 debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename);
900 if(!cg->throttle_io_serviced.filename) {
901 snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
902 cg->throttle_io_serviced.filename = strdup(filename);
903 debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename);
905 if(!cg->io_merged.filename) {
906 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
907 cg->io_merged.filename = strdup(filename);
908 debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename);
910 if(!cg->io_queued.filename) {
911 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
912 cg->io_queued.filename = strdup(filename);
913 debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename);
918 debug(D_CGROUP, "done searching for cgroups");
922 // ----------------------------------------------------------------------------
925 #define CHART_TITLE_MAX 300
927 void update_cgroup_charts(int update_every) {
928 debug(D_CGROUP, "updating cgroups charts");
930 char type[RRD_ID_LENGTH_MAX + 1];
931 char title[CHART_TITLE_MAX + 1];
936 for(cg = cgroup_root; cg ; cg = cg->next) {
937 if(!cg->available || !cg->enabled)
940 if(cg->id[0] == '\0')
941 strcpy(type, "cgroup_host");
942 else if(cg->id[0] == '/')
943 snprintf(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
945 snprintf(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
947 netdata_fix_chart_id(type);
949 if(cg->cpuacct_stat.updated) {
950 st = rrdset_find_bytype(type, "cpu");
952 snprintf(title, CHART_TITLE_MAX, "CPU Usage for cgroup %s", cg->chart_id);
953 st = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", 40000, update_every, RRDSET_TYPE_STACKED);
955 rrddim_add(st, "user", NULL, 100, hz, RRDDIM_INCREMENTAL);
956 rrddim_add(st, "system", NULL, 100, hz, RRDDIM_INCREMENTAL);
958 else rrdset_next(st);
960 rrddim_set(st, "user", cg->cpuacct_stat.user);
961 rrddim_set(st, "system", cg->cpuacct_stat.system);
965 if(cg->cpuacct_usage.updated) {
966 char id[RRD_ID_LENGTH_MAX + 1];
969 st = rrdset_find_bytype(type, "cpu_per_core");
971 snprintf(title, CHART_TITLE_MAX, "CPU Usage Per Core for cgroup %s", cg->chart_id);
972 st = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", 40100, update_every, RRDSET_TYPE_STACKED);
974 for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
975 snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
976 rrddim_add(st, id, NULL, 100, 1000000, RRDDIM_INCREMENTAL);
979 else rrdset_next(st);
981 for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
982 snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
983 rrddim_set(st, id, cg->cpuacct_usage.cpu_percpu[i]);
988 if(cg->memory.updated) {
989 if(cg->memory.cache + cg->memory.rss + cg->memory.rss_huge + cg->memory.mapped_file > 0) {
990 st = rrdset_find_bytype(type, "mem");
992 snprintf(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_id);
993 st = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", 40200, update_every,
994 RRDSET_TYPE_STACKED);
996 rrddim_add(st, "cache", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
997 rrddim_add(st, "rss", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
998 if(cg->memory.has_dirty_swap)
999 rrddim_add(st, "swap", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1000 rrddim_add(st, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1001 rrddim_add(st, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1003 else rrdset_next(st);
1005 rrddim_set(st, "cache", cg->memory.cache);
1006 rrddim_set(st, "rss", cg->memory.rss);
1007 if(cg->memory.has_dirty_swap)
1008 rrddim_set(st, "swap", cg->memory.swap);
1009 rrddim_set(st, "rss_huge", cg->memory.rss_huge);
1010 rrddim_set(st, "mapped_file", cg->memory.mapped_file);
1014 st = rrdset_find_bytype(type, "writeback");
1016 snprintf(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_id);
1017 st = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300,
1018 update_every, RRDSET_TYPE_AREA);
1020 if(cg->memory.has_dirty_swap)
1021 rrddim_add(st, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1022 rrddim_add(st, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1024 else rrdset_next(st);
1026 if(cg->memory.has_dirty_swap)
1027 rrddim_set(st, "dirty", cg->memory.dirty);
1028 rrddim_set(st, "writeback", cg->memory.writeback);
1031 if(cg->memory.pgpgin + cg->memory.pgpgout > 0) {
1032 st = rrdset_find_bytype(type, "mem_activity");
1034 snprintf(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_id);
1035 st = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s",
1036 40400, update_every, RRDSET_TYPE_LINE);
1038 rrddim_add(st, "pgpgin", "in", sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1039 rrddim_add(st, "pgpgout", "out", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1041 else rrdset_next(st);
1043 rrddim_set(st, "pgpgin", cg->memory.pgpgin);
1044 rrddim_set(st, "pgpgout", cg->memory.pgpgout);
1048 if(cg->memory.pgfault + cg->memory.pgmajfault > 0) {
1049 st = rrdset_find_bytype(type, "pgfaults");
1051 snprintf(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_id);
1052 st = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", 40500,
1053 update_every, RRDSET_TYPE_LINE);
1055 rrddim_add(st, "pgfault", NULL, sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1056 rrddim_add(st, "pgmajfault", "swap", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1058 else rrdset_next(st);
1060 rrddim_set(st, "pgfault", cg->memory.pgfault);
1061 rrddim_set(st, "pgmajfault", cg->memory.pgmajfault);
1066 if(cg->io_service_bytes.updated && cg->io_service_bytes.Read + cg->io_service_bytes.Write > 0) {
1067 st = rrdset_find_bytype(type, "io");
1069 snprintf(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_id);
1070 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1071 update_every, RRDSET_TYPE_LINE);
1073 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1074 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1076 else rrdset_next(st);
1078 rrddim_set(st, "read", cg->io_service_bytes.Read);
1079 rrddim_set(st, "write", cg->io_service_bytes.Write);
1083 if(cg->io_serviced.updated && cg->io_serviced.Read + cg->io_serviced.Write > 0) {
1084 st = rrdset_find_bytype(type, "serviced_ops");
1086 snprintf(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_id);
1087 st = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.serviced_ops", title, "operations/s", 41200,
1088 update_every, RRDSET_TYPE_LINE);
1090 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1091 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1093 else rrdset_next(st);
1095 rrddim_set(st, "read", cg->io_serviced.Read);
1096 rrddim_set(st, "write", cg->io_serviced.Write);
1100 if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.Read + cg->throttle_io_service_bytes.Write > 0) {
1101 st = rrdset_find_bytype(type, "io");
1103 snprintf(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_id);
1104 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1105 update_every, RRDSET_TYPE_LINE);
1107 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1108 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1110 else rrdset_next(st);
1112 rrddim_set(st, "read", cg->throttle_io_service_bytes.Read);
1113 rrddim_set(st, "write", cg->throttle_io_service_bytes.Write);
1118 if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.Read + cg->throttle_io_serviced.Write > 0) {
1119 st = rrdset_find_bytype(type, "throttle_serviced_ops");
1121 snprintf(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_id);
1122 st = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", 41200,
1123 update_every, RRDSET_TYPE_LINE);
1125 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1126 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1128 else rrdset_next(st);
1130 rrddim_set(st, "read", cg->throttle_io_serviced.Read);
1131 rrddim_set(st, "write", cg->throttle_io_serviced.Write);
1135 if(cg->io_queued.updated) {
1136 st = rrdset_find_bytype(type, "queued_ops");
1138 snprintf(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_id);
1139 st = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", 42000,
1140 update_every, RRDSET_TYPE_LINE);
1142 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_ABSOLUTE);
1143 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_ABSOLUTE);
1145 else rrdset_next(st);
1147 rrddim_set(st, "read", cg->io_queued.Read);
1148 rrddim_set(st, "write", cg->io_queued.Write);
1152 if(cg->io_merged.updated && cg->io_merged.Read + cg->io_merged.Write > 0) {
1153 st = rrdset_find_bytype(type, "merged_ops");
1155 snprintf(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_id);
1156 st = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", 42100,
1157 update_every, RRDSET_TYPE_LINE);
1159 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1160 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1162 else rrdset_next(st);
1164 rrddim_set(st, "read", cg->io_merged.Read);
1165 rrddim_set(st, "write", cg->io_merged.Write);
1170 debug(D_CGROUP, "done updating cgroups charts");
1173 // ----------------------------------------------------------------------------
1176 int do_sys_fs_cgroup(int update_every, unsigned long long dt) {
1177 static int cgroup_global_config_read = 0;
1178 static time_t last_run = 0;
1179 time_t now = time(NULL);
1183 if(unlikely(!cgroup_global_config_read)) {
1184 read_cgroup_plugin_configuration();
1185 cgroup_global_config_read = 1;
1188 if(unlikely(cgroup_enable_new_cgroups_detected_at_runtime && now - last_run > cgroup_check_for_new_every)) {
1193 read_all_cgroups(cgroup_root);
1194 update_cgroup_charts(update_every);
1199 void *cgroups_main(void *ptr)
1203 info("CGROUP Plugin thread created with task id %d", gettid());
1205 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
1206 error("Cannot set pthread cancel type to DEFERRED.");
1208 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
1209 error("Cannot set pthread cancel state to ENABLE.");
1211 struct rusage thread;
1213 // when ZERO, attempt to do it
1214 int vdo_sys_fs_cgroup = 0;
1215 int vdo_cpu_netdata = !config_get_boolean("plugin:cgroups", "cgroups plugin resources", 1);
1217 // keep track of the time each module was called
1218 unsigned long long sutime_sys_fs_cgroup = 0ULL;
1220 // the next time we will run - aligned properly
1221 unsigned long long sunext = (time(NULL) - (time(NULL) % rrd_update_every) + rrd_update_every) * 1000000ULL;
1222 unsigned long long sunow;
1224 RRDSET *stcpu_thread = NULL;
1227 if(unlikely(netdata_exit)) break;
1229 // delay until it is our time to run
1230 while((sunow = timems()) < sunext)
1231 usleep((useconds_t)(sunext - sunow));
1233 // find the next time we need to run
1234 while(timems() > sunext)
1235 sunext += rrd_update_every * 1000000ULL;
1237 if(unlikely(netdata_exit)) break;
1239 // BEGIN -- the job to be done
1241 if(!vdo_sys_fs_cgroup) {
1242 debug(D_PROCNETDEV_LOOP, "PROCNETDEV: calling do_sys_fs_cgroup().");
1244 vdo_sys_fs_cgroup = do_sys_fs_cgroup(rrd_update_every, (sutime_sys_fs_cgroup > 0)?sunow - sutime_sys_fs_cgroup:0ULL);
1245 sutime_sys_fs_cgroup = sunow;
1247 if(unlikely(netdata_exit)) break;
1249 // END -- the job is done
1251 // --------------------------------------------------------------------
1253 if(!vdo_cpu_netdata) {
1254 getrusage(RUSAGE_THREAD, &thread);
1256 if(!stcpu_thread) stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu");
1258 stcpu_thread = rrdset_create("netdata", "plugin_cgroups_cpu", NULL, "proc.internal", NULL, "NetData CGroups Plugin CPU usage", "milliseconds/s", 131000, rrd_update_every, RRDSET_TYPE_STACKED);
1260 rrddim_add(stcpu_thread, "user", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1261 rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1263 else rrdset_next(stcpu_thread);
1265 rrddim_set(stcpu_thread, "user" , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
1266 rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
1267 rrdset_done(stcpu_thread);