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 = 500;
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) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct");
51 if(!mi) s = "/sys/fs/cgroup/cpuacct";
52 else s = mi->mount_point;
53 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
54 cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
56 mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
57 if(!mi) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio");
58 if(!mi) s = "/sys/fs/cgroup/blkio";
59 else s = mi->mount_point;
60 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
61 cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
63 mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory");
64 if(!mi) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "memory");
65 if(!mi) s = "/sys/fs/cgroup/memory";
66 else s = mi->mount_point;
67 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, s);
68 cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
70 cgroup_root_max = config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
71 cgroup_max_depth = config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
73 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);
78 // ----------------------------------------------------------------------------
86 unsigned long long Read;
87 unsigned long long Write;
89 unsigned long long Sync;
90 unsigned long long Async;
91 unsigned long long Total;
95 // https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
103 unsigned long long cache;
104 unsigned long long rss;
105 unsigned long long rss_huge;
106 unsigned long long mapped_file;
107 unsigned long long writeback;
108 unsigned long long dirty;
109 unsigned long long swap;
110 unsigned long long pgpgin;
111 unsigned long long pgpgout;
112 unsigned long long pgfault;
113 unsigned long long pgmajfault;
115 unsigned long long inactive_anon;
116 unsigned long long active_anon;
117 unsigned long long inactive_file;
118 unsigned long long active_file;
119 unsigned long long unevictable;
120 unsigned long long hierarchical_memory_limit;
121 unsigned long long total_cache;
122 unsigned long long total_rss;
123 unsigned long long total_rss_huge;
124 unsigned long long total_mapped_file;
125 unsigned long long total_writeback;
126 unsigned long long total_dirty;
127 unsigned long long total_swap;
128 unsigned long long total_pgpgin;
129 unsigned long long total_pgpgout;
130 unsigned long long total_pgfault;
131 unsigned long long total_pgmajfault;
132 unsigned long long total_inactive_anon;
133 unsigned long long total_active_anon;
134 unsigned long long total_inactive_file;
135 unsigned long long total_active_file;
136 unsigned long long total_unevictable;
140 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
141 struct cpuacct_stat {
146 unsigned long long user;
147 unsigned long long system;
150 // https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
151 struct cpuacct_usage {
157 unsigned long long *cpu_percpu;
161 int available; // found in the filesystem
162 int enabled; // enabled in the config
170 struct cpuacct_stat cpuacct_stat;
171 struct cpuacct_usage cpuacct_usage;
173 struct memory memory;
175 struct blkio io_service_bytes; // bytes
176 struct blkio io_serviced; // operations
178 struct blkio throttle_io_service_bytes; // bytes
179 struct blkio throttle_io_serviced; // operations
181 struct blkio io_merged; // operations
182 struct blkio io_queued; // operations
186 } *cgroup_root = NULL;
188 // ----------------------------------------------------------------------------
189 // read values from /sys
191 void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
192 static procfile *ff = NULL;
194 static uint32_t user_hash = 0;
195 static uint32_t system_hash = 0;
197 if(unlikely(user_hash == 0)) {
198 user_hash = simple_hash("user");
199 system_hash = simple_hash("system");
204 ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
207 ff = procfile_readall(ff);
210 unsigned long i, lines = procfile_lines(ff);
213 error("File '%s' should have 1+ lines.", cp->filename);
217 for(i = 0; i < lines ; i++) {
218 char *s = procfile_lineword(ff, i, 0);
219 uint32_t hash = simple_hash(s);
221 if(hash == user_hash && !strcmp(s, "user"))
222 cp->user = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
224 else if(hash == system_hash && !strcmp(s, "system"))
225 cp->system = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
230 // fprintf(stderr, "READ '%s': user: %llu, system: %llu\n", cp->filename, cp->user, cp->system);
234 void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
235 static procfile *ff = NULL;
239 ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
242 ff = procfile_readall(ff);
245 if(procfile_lines(ff) < 1) {
246 error("File '%s' should have 1+ lines but has %d.", ca->filename, procfile_lines(ff));
250 unsigned long i = procfile_linewords(ff, 0);
253 // we may have 1 more CPU reported
255 char *s = procfile_lineword(ff, 0, i - 1);
261 free(ca->cpu_percpu);
263 ca->cpu_percpu = malloc(sizeof(unsigned long long) * i);
265 fatal("Cannot allocate memory (%z bytes)", sizeof(unsigned long long) * i);
270 for(i = 0; i < ca->cpus ;i++) {
271 ca->cpu_percpu[i] = strtoull(procfile_lineword(ff, 0, i), NULL, 10);
272 // fprintf(stderr, "READ '%s': cpu%d/%d: %llu ('%s')\n", ca->filename, i, ca->cpus, ca->cpu_percpu[i], procfile_lineword(ff, 0, i));
279 void cgroup_read_blkio(struct blkio *io) {
280 static procfile *ff = NULL;
282 static uint32_t Read_hash = 0;
283 static uint32_t Write_hash = 0;
285 static uint32_t Sync_hash = 0;
286 static uint32_t Async_hash = 0;
287 static uint32_t Total_hash = 0;
290 if(unlikely(Read_hash == 0)) {
291 Read_hash = simple_hash("Read");
292 Write_hash = simple_hash("Write");
294 Sync_hash = simple_hash("Sync");
295 Async_hash = simple_hash("Async");
296 Total_hash = simple_hash("Total");
302 ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
305 ff = procfile_readall(ff);
308 unsigned long i, lines = procfile_lines(ff);
311 error("File '%s' should have 1+ lines.", io->filename);
323 for(i = 0; i < lines ; i++) {
324 char *s = procfile_lineword(ff, i, 1);
325 uint32_t hash = simple_hash(s);
327 if(hash == Read_hash && !strcmp(s, "Read"))
328 io->Read += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
330 else if(hash == Write_hash && !strcmp(s, "Write"))
331 io->Write += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
334 else if(hash == Sync_hash && !strcmp(s, "Sync"))
335 io->Sync += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
337 else if(hash == Async_hash && !strcmp(s, "Async"))
338 io->Async += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
340 else if(hash == Total_hash && !strcmp(s, "Total"))
341 io->Total += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
346 // 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);
350 void cgroup_read_memory(struct memory *mem) {
351 static procfile *ff = NULL;
353 static uint32_t cache_hash = 0;
354 static uint32_t rss_hash = 0;
355 static uint32_t rss_huge_hash = 0;
356 static uint32_t mapped_file_hash = 0;
357 static uint32_t writeback_hash = 0;
358 static uint32_t dirty_hash = 0;
359 static uint32_t swap_hash = 0;
360 static uint32_t pgpgin_hash = 0;
361 static uint32_t pgpgout_hash = 0;
362 static uint32_t pgfault_hash = 0;
363 static uint32_t pgmajfault_hash = 0;
365 static uint32_t inactive_anon_hash = 0;
366 static uint32_t active_anon_hash = 0;
367 static uint32_t inactive_file_hash = 0;
368 static uint32_t active_file_hash = 0;
369 static uint32_t unevictable_hash = 0;
370 static uint32_t hierarchical_memory_limit_hash = 0;
371 static uint32_t total_cache_hash = 0;
372 static uint32_t total_rss_hash = 0;
373 static uint32_t total_rss_huge_hash = 0;
374 static uint32_t total_mapped_file_hash = 0;
375 static uint32_t total_writeback_hash = 0;
376 static uint32_t total_dirty_hash = 0;
377 static uint32_t total_swap_hash = 0;
378 static uint32_t total_pgpgin_hash = 0;
379 static uint32_t total_pgpgout_hash = 0;
380 static uint32_t total_pgfault_hash = 0;
381 static uint32_t total_pgmajfault_hash = 0;
382 static uint32_t total_inactive_anon_hash = 0;
383 static uint32_t total_active_anon_hash = 0;
384 static uint32_t total_inactive_file_hash = 0;
385 static uint32_t total_active_file_hash = 0;
386 static uint32_t total_unevictable_hash = 0;
388 if(unlikely(cache_hash == 0)) {
389 cache_hash = simple_hash("cache");
390 rss_hash = simple_hash("rss");
391 rss_huge_hash = simple_hash("rss_huge");
392 mapped_file_hash = simple_hash("mapped_file");
393 writeback_hash = simple_hash("writeback");
394 dirty_hash = simple_hash("dirty");
395 swap_hash = simple_hash("swap");
396 pgpgin_hash = simple_hash("pgpgin");
397 pgpgout_hash = simple_hash("pgpgout");
398 pgfault_hash = simple_hash("pgfault");
399 pgmajfault_hash = simple_hash("pgmajfault");
401 inactive_anon_hash = simple_hash("inactive_anon");
402 active_anon_hash = simple_hash("active_anon");
403 inactive_file_hash = simple_hash("inactive_file");
404 active_file_hash = simple_hash("active_file");
405 unevictable_hash = simple_hash("unevictable");
406 hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
407 total_cache_hash = simple_hash("total_cache");
408 total_rss_hash = simple_hash("total_rss");
409 total_rss_huge_hash = simple_hash("total_rss_huge");
410 total_mapped_file_hash = simple_hash("total_mapped_file");
411 total_writeback_hash = simple_hash("total_writeback");
412 total_dirty_hash = simple_hash("total_dirty");
413 total_swap_hash = simple_hash("total_swap");
414 total_pgpgin_hash = simple_hash("total_pgpgin");
415 total_pgpgout_hash = simple_hash("total_pgpgout");
416 total_pgfault_hash = simple_hash("total_pgfault");
417 total_pgmajfault_hash = simple_hash("total_pgmajfault");
418 total_inactive_anon_hash = simple_hash("total_inactive_anon");
419 total_active_anon_hash = simple_hash("total_active_anon");
420 total_inactive_file_hash = simple_hash("total_inactive_file");
421 total_active_file_hash = simple_hash("total_active_file");
422 total_unevictable_hash = simple_hash("total_unevictable");
428 ff = procfile_reopen(ff, mem->filename, NULL, PROCFILE_FLAG_DEFAULT);
431 ff = procfile_readall(ff);
434 unsigned long i, lines = procfile_lines(ff);
437 error("File '%s' should have 1+ lines.", mem->filename);
441 for(i = 0; i < lines ; i++) {
442 char *s = procfile_lineword(ff, i, 0);
443 uint32_t hash = simple_hash(s);
445 if(hash == cache_hash && !strcmp(s, "cache"))
446 mem->cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
448 else if(hash == rss_hash && !strcmp(s, "rss"))
449 mem->rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
451 else if(hash == rss_huge_hash && !strcmp(s, "rss_huge"))
452 mem->rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
454 else if(hash == mapped_file_hash && !strcmp(s, "mapped_file"))
455 mem->mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
457 else if(hash == writeback_hash && !strcmp(s, "writeback"))
458 mem->writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
460 else if(hash == dirty_hash && !strcmp(s, "dirty")) {
461 mem->dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
462 mem->has_dirty_swap = 1;
465 else if(hash == swap_hash && !strcmp(s, "swap")) {
466 mem->swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
467 mem->has_dirty_swap = 1;
470 else if(hash == pgpgin_hash && !strcmp(s, "pgpgin"))
471 mem->pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
473 else if(hash == pgpgout_hash && !strcmp(s, "pgpgout"))
474 mem->pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
476 else if(hash == pgfault_hash && !strcmp(s, "pgfault"))
477 mem->pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
479 else if(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))
480 mem->pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
483 else if(hash == inactive_anon_hash && !strcmp(s, "inactive_anon"))
484 mem->inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
486 else if(hash == active_anon_hash && !strcmp(s, "active_anon"))
487 mem->active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
489 else if(hash == inactive_file_hash && !strcmp(s, "inactive_file"))
490 mem->inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
492 else if(hash == active_file_hash && !strcmp(s, "active_file"))
493 mem->active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
495 else if(hash == unevictable_hash && !strcmp(s, "unevictable"))
496 mem->unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
498 else if(hash == hierarchical_memory_limit_hash && !strcmp(s, "hierarchical_memory_limit"))
499 mem->hierarchical_memory_limit = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
501 else if(hash == total_cache_hash && !strcmp(s, "total_cache"))
502 mem->total_cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
504 else if(hash == total_rss_hash && !strcmp(s, "total_rss"))
505 mem->total_rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
507 else if(hash == total_rss_huge_hash && !strcmp(s, "total_rss_huge"))
508 mem->total_rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
510 else if(hash == total_mapped_file_hash && !strcmp(s, "total_mapped_file"))
511 mem->total_mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
513 else if(hash == total_writeback_hash && !strcmp(s, "total_writeback"))
514 mem->total_writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
516 else if(hash == total_dirty_hash && !strcmp(s, "total_dirty"))
517 mem->total_dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
519 else if(hash == total_swap_hash && !strcmp(s, "total_swap"))
520 mem->total_swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
522 else if(hash == total_pgpgin_hash && !strcmp(s, "total_pgpgin"))
523 mem->total_pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
525 else if(hash == total_pgpgout_hash && !strcmp(s, "total_pgpgout"))
526 mem->total_pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
528 else if(hash == total_pgfault_hash && !strcmp(s, "total_pgfault"))
529 mem->total_pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
531 else if(hash == total_pgmajfault_hash && !strcmp(s, "total_pgmajfault"))
532 mem->total_pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
534 else if(hash == total_inactive_anon_hash && !strcmp(s, "total_inactive_anon"))
535 mem->total_inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
537 else if(hash == total_active_anon_hash && !strcmp(s, "total_active_anon"))
538 mem->total_active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
540 else if(hash == total_inactive_file_hash && !strcmp(s, "total_inactive_file"))
541 mem->total_inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
543 else if(hash == total_active_file_hash && !strcmp(s, "total_active_file"))
544 mem->total_active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
546 else if(hash == total_unevictable_hash && !strcmp(s, "total_unevictable"))
547 mem->total_unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
551 // 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);
557 void cgroup_read(struct cgroup *cg) {
558 debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
560 cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
561 cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
562 cgroup_read_memory(&cg->memory);
563 cgroup_read_blkio(&cg->io_service_bytes);
564 cgroup_read_blkio(&cg->io_serviced);
565 cgroup_read_blkio(&cg->throttle_io_service_bytes);
566 cgroup_read_blkio(&cg->throttle_io_serviced);
567 cgroup_read_blkio(&cg->io_merged);
568 cgroup_read_blkio(&cg->io_queued);
571 void read_all_cgroups(struct cgroup *root) {
572 debug(D_CGROUP, "reading metrics for all cgroups");
576 for(cg = root; cg ; cg = cg->next)
577 if(cg->enabled && cg->available)
581 // ----------------------------------------------------------------------------
582 // add/remove/find cgroup objects
584 #define CGROUP_CHARTID_LINE_MAX 1024
586 void cgroup_get_chart_id(struct cgroup *cg) {
587 debug(D_CGROUP, "getting the name of cgroup '%s'", cg->id);
590 char buffer[CGROUP_CHARTID_LINE_MAX + 1];
592 snprintf(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'",
593 config_get("plugin:cgroups", "script to get cgroup names", PLUGINS_DIR "/cgroup-name.sh"), cg->chart_id);
595 debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id);
596 FILE *fp = mypopen(buffer, &cgroup_pid);
598 error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer);
601 debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id);
602 char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp);
603 debug(D_CGROUP, "closing command for cgroup '%s'", cg->id);
604 mypclose(fp, cgroup_pid);
605 debug(D_CGROUP, "closed command for cgroup '%s'", cg->id);
607 if(s && *s && *s != '\n') {
608 debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s);
612 free(cg->chart_title);
613 cg->chart_title = strdup(s);
615 fatal("CGROUP: Cannot allocate memory for chart name of cgroup '%s' chart name: '%s'", cg->id, s);
617 netdata_fix_chart_name(cg->chart_title);
620 cg->chart_id = strdup(s);
622 fatal("CGROUP: Cannot allocate memory for chart id of cgroup '%s' chart id: '%s'", cg->id, s);
624 netdata_fix_chart_id(cg->chart_id);
626 debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title);
628 else debug(D_CGROUP, "cgroup '%s' is not to be renamed (will be shown as '%s')", cg->id, cg->chart_id);
631 struct cgroup *cgroup_add(const char *id) {
632 debug(D_CGROUP, "adding cgroup '%s'", id);
634 if(cgroup_root_count >= cgroup_root_max) {
635 info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
639 int def = cgroup_enable_new_cgroups_detected_at_runtime;
640 const char *chart_id = id;
644 // disable by default the root cgroup
646 debug(D_CGROUP, "cgroup '%s' is the root container (by default %s)", id, (def)?"enabled":"disabled");
649 if(*chart_id == '/') chart_id++;
651 size_t len = strlen(chart_id);
653 // disable by default the parent cgroup
654 // for known cgroup managers
655 if(!strcmp(chart_id, "lxc") ||
656 !strcmp(chart_id, "docker") ||
657 !strcmp(chart_id, "libvirt") ||
658 !strcmp(chart_id, "qemu") ||
659 !strcmp(chart_id, "systemd") ||
660 !strcmp(chart_id, "system.slice") ||
661 !strcmp(chart_id, "machine.slice") ||
662 !strcmp(chart_id, "user") ||
663 !strcmp(chart_id, "system") ||
664 !strcmp(chart_id, "machine") ||
666 (len > 6 && !strncmp(chart_id, "user/", 6)) ||
667 (len > 11 && !strncmp(chart_id, "user.slice/", 11)) ||
669 (len > 5 && !strncmp(&chart_id[len - 5], ".user", 5)) ||
670 (len > 6 && !strncmp(&chart_id[len - 6], ".slice", 6)) ||
671 (len > 8 && !strncmp(&chart_id[len - 8], ".session", 8)) ||
672 (len > 8 && !strncmp(&chart_id[len - 8], ".service", 8)) ||
673 (len > 10 && !strncmp(&chart_id[len - 10], ".partition", 10))
676 debug(D_CGROUP, "cgroup '%s' is %s (by default)", id, (def)?"enabled":"disabled");
680 struct cgroup *cg = calloc(1, sizeof(struct cgroup));
681 if(!cg) fatal("Cannot allocate memory for cgroup '%s'", id);
683 debug(D_CGROUP, "adding cgroup '%s'", id);
686 if(!cg->id) fatal("Cannot allocate memory for cgroup '%s'", id);
688 cg->hash = simple_hash(cg->id);
690 cg->chart_id = strdup(chart_id);
691 if(!cg->chart_id) fatal("Cannot allocate memory for cgroup '%s'", id);
693 cg->chart_title = strdup(chart_id);
694 if(!cg->chart_title) fatal("Cannot allocate memory for cgroup '%s'", id);
701 for(e = cgroup_root; e->next ;e = e->next) ;
707 // fix the name by calling the external script
708 cgroup_get_chart_id(cg);
710 char option[FILENAME_MAX + 1];
711 snprintf(option, FILENAME_MAX, "enable cgroup %s", cg->chart_title);
712 cg->enabled = config_get_boolean("plugin:cgroups", option, def);
714 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");
719 void cgroup_free(struct cgroup *cg) {
720 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");
722 free(cg->cpuacct_usage.cpu_percpu);
724 free(cg->cpuacct_stat.filename);
725 free(cg->cpuacct_usage.filename);
726 free(cg->memory.filename);
727 free(cg->io_service_bytes.filename);
728 free(cg->io_serviced.filename);
729 free(cg->throttle_io_service_bytes.filename);
730 free(cg->throttle_io_serviced.filename);
731 free(cg->io_merged.filename);
732 free(cg->io_queued.filename);
736 free(cg->chart_title);
742 // find if a given cgroup exists
743 struct cgroup *cgroup_find(const char *id) {
744 debug(D_CGROUP, "searching for cgroup '%s'", id);
746 uint32_t hash = simple_hash(id);
749 for(cg = cgroup_root; cg ; cg = cg->next) {
750 if(hash == cg->hash && strcmp(id, cg->id) == 0)
754 debug(D_CGROUP, "cgroup_find('%s') %s", id, (cg)?"found":"not found");
758 // ----------------------------------------------------------------------------
759 // detect running cgroups
761 // callback for find_file_in_subdirs()
762 void found_subdir_in_dir(const char *dir) {
763 debug(D_CGROUP, "examining cgroup dir '%s'", dir);
765 struct cgroup *cg = cgroup_find(dir);
767 if(*dir && cgroup_max_depth > 0) {
771 for(s = dir; *s ;s++)
772 if(unlikely(*s == '/'))
775 if(depth > cgroup_max_depth) {
776 info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
780 debug(D_CGROUP, "will add dir '%s' as cgroup", dir);
781 cg = cgroup_add(dir);
784 if(cg) cg->available = 1;
787 void find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
789 if(!this) this = base;
790 size_t dirlen = strlen(this), baselen = strlen(base);
791 const char *relative_path = &this[baselen];
793 DIR *dir = opendir(this);
796 callback(relative_path);
798 struct dirent *de = NULL;
799 while((de = readdir(dir))) {
800 if(de->d_type == DT_DIR
802 (de->d_name[0] == '.' && de->d_name[1] == '\0')
803 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
807 debug(D_CGROUP, "examining '%s/%s'", this, de->d_name);
809 if(de->d_type == DT_DIR) {
811 const char *r = relative_path;
812 if(*r == '\0') r = "/";
813 else if (*r == '/') r++;
815 // we check for this option here
816 // so that the config will not have settings
817 // for leaf directories
818 char option[FILENAME_MAX + 1];
819 snprintf(option, FILENAME_MAX, "search for cgroups under %s", r);
820 option[FILENAME_MAX] = '\0';
821 enabled = config_get_boolean("plugin:cgroups", option, 1);
825 char *s = malloc(dirlen + strlen(de->d_name) + 2);
829 strcat(s, de->d_name);
830 find_dir_in_subdirs(base, s, callback);
840 void mark_all_cgroups_as_not_available() {
841 debug(D_CGROUP, "marking all cgroups as not available");
845 // mark all as not available
846 for(cg = cgroup_root; cg ; cg = cg->next)
850 void cleanup_all_cgroups() {
851 struct cgroup *cg = cgroup_root, *last = NULL;
857 cgroup_root = cg->next;
859 last->next = cg->next;
875 void find_all_cgroups() {
876 debug(D_CGROUP, "searching for cgroups");
878 mark_all_cgroups_as_not_available();
880 if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage)
881 find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_subdir_in_dir);
883 if(cgroup_enable_blkio)
884 find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir);
886 if(cgroup_enable_memory)
887 find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir);
889 // remove any non-existing cgroups
890 cleanup_all_cgroups();
893 for(cg = cgroup_root; cg ; cg = cg->next) {
894 // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
896 if(unlikely(!cg->available))
899 debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id);
901 // check for newly added cgroups
902 // and update the filenames they read
903 char filename[FILENAME_MAX + 1];
904 if(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename) {
905 snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
906 cg->cpuacct_stat.filename = strdup(filename);
907 debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename);
909 if(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename) {
910 snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
911 cg->cpuacct_usage.filename = strdup(filename);
912 debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename);
914 if(cgroup_enable_memory && !cg->memory.filename) {
915 snprintf(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
916 cg->memory.filename = strdup(filename);
917 debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename);
919 if(cgroup_enable_blkio) {
920 if(!cg->io_service_bytes.filename) {
921 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
922 cg->io_service_bytes.filename = strdup(filename);
923 debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename);
925 if(!cg->io_serviced.filename) {
926 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
927 cg->io_serviced.filename = strdup(filename);
928 debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename);
930 if(!cg->throttle_io_service_bytes.filename) {
931 snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
932 cg->throttle_io_service_bytes.filename = strdup(filename);
933 debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename);
935 if(!cg->throttle_io_serviced.filename) {
936 snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
937 cg->throttle_io_serviced.filename = strdup(filename);
938 debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename);
940 if(!cg->io_merged.filename) {
941 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
942 cg->io_merged.filename = strdup(filename);
943 debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename);
945 if(!cg->io_queued.filename) {
946 snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
947 cg->io_queued.filename = strdup(filename);
948 debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename);
953 debug(D_CGROUP, "done searching for cgroups");
957 // ----------------------------------------------------------------------------
960 #define CHART_TITLE_MAX 300
962 void update_cgroup_charts(int update_every) {
963 debug(D_CGROUP, "updating cgroups charts");
965 char type[RRD_ID_LENGTH_MAX + 1];
966 char title[CHART_TITLE_MAX + 1];
971 for(cg = cgroup_root; cg ; cg = cg->next) {
972 if(!cg->available || !cg->enabled)
975 if(cg->id[0] == '\0')
976 strcpy(type, "cgroup_root");
977 else if(cg->id[0] == '/')
978 snprintf(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
980 snprintf(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id);
982 netdata_fix_chart_id(type);
984 if(cg->cpuacct_stat.updated) {
985 st = rrdset_find_bytype(type, "cpu");
987 snprintf(title, CHART_TITLE_MAX, "CPU Usage for cgroup %s", cg->chart_title);
988 st = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", 40000, update_every, RRDSET_TYPE_STACKED);
990 rrddim_add(st, "user", NULL, 100, hz, RRDDIM_INCREMENTAL);
991 rrddim_add(st, "system", NULL, 100, hz, RRDDIM_INCREMENTAL);
993 else rrdset_next(st);
995 rrddim_set(st, "user", cg->cpuacct_stat.user);
996 rrddim_set(st, "system", cg->cpuacct_stat.system);
1000 if(cg->cpuacct_usage.updated) {
1001 char id[RRD_ID_LENGTH_MAX + 1];
1004 st = rrdset_find_bytype(type, "cpu_per_core");
1006 snprintf(title, CHART_TITLE_MAX, "CPU Usage Per Core for cgroup %s", cg->chart_title);
1007 st = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", 40100, update_every, RRDSET_TYPE_STACKED);
1009 for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1010 snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
1011 rrddim_add(st, id, NULL, 100, 1000000, RRDDIM_INCREMENTAL);
1014 else rrdset_next(st);
1016 for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
1017 snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
1018 rrddim_set(st, id, cg->cpuacct_usage.cpu_percpu[i]);
1023 if(cg->memory.updated) {
1024 if(cg->memory.cache + cg->memory.rss + cg->memory.rss_huge + cg->memory.mapped_file > 0) {
1025 st = rrdset_find_bytype(type, "mem");
1027 snprintf(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title);
1028 st = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", 40200, update_every,
1029 RRDSET_TYPE_STACKED);
1031 rrddim_add(st, "cache", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1032 rrddim_add(st, "rss", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1033 if(cg->memory.has_dirty_swap)
1034 rrddim_add(st, "swap", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1035 rrddim_add(st, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1036 rrddim_add(st, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1038 else rrdset_next(st);
1040 rrddim_set(st, "cache", cg->memory.cache);
1041 rrddim_set(st, "rss", cg->memory.rss);
1042 if(cg->memory.has_dirty_swap)
1043 rrddim_set(st, "swap", cg->memory.swap);
1044 rrddim_set(st, "rss_huge", cg->memory.rss_huge);
1045 rrddim_set(st, "mapped_file", cg->memory.mapped_file);
1049 st = rrdset_find_bytype(type, "writeback");
1051 snprintf(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title);
1052 st = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300,
1053 update_every, RRDSET_TYPE_AREA);
1055 if(cg->memory.has_dirty_swap)
1056 rrddim_add(st, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1057 rrddim_add(st, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
1059 else rrdset_next(st);
1061 if(cg->memory.has_dirty_swap)
1062 rrddim_set(st, "dirty", cg->memory.dirty);
1063 rrddim_set(st, "writeback", cg->memory.writeback);
1066 if(cg->memory.pgpgin + cg->memory.pgpgout > 0) {
1067 st = rrdset_find_bytype(type, "mem_activity");
1069 snprintf(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title);
1070 st = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s",
1071 40400, update_every, RRDSET_TYPE_LINE);
1073 rrddim_add(st, "pgpgin", "in", sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1074 rrddim_add(st, "pgpgout", "out", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1076 else rrdset_next(st);
1078 rrddim_set(st, "pgpgin", cg->memory.pgpgin);
1079 rrddim_set(st, "pgpgout", cg->memory.pgpgout);
1083 if(cg->memory.pgfault + cg->memory.pgmajfault > 0) {
1084 st = rrdset_find_bytype(type, "pgfaults");
1086 snprintf(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title);
1087 st = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", 40500,
1088 update_every, RRDSET_TYPE_LINE);
1090 rrddim_add(st, "pgfault", NULL, sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1091 rrddim_add(st, "pgmajfault", "swap", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
1093 else rrdset_next(st);
1095 rrddim_set(st, "pgfault", cg->memory.pgfault);
1096 rrddim_set(st, "pgmajfault", cg->memory.pgmajfault);
1101 if(cg->io_service_bytes.updated && cg->io_service_bytes.Read + cg->io_service_bytes.Write > 0) {
1102 st = rrdset_find_bytype(type, "io");
1104 snprintf(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1105 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1106 update_every, RRDSET_TYPE_LINE);
1108 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1109 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1111 else rrdset_next(st);
1113 rrddim_set(st, "read", cg->io_service_bytes.Read);
1114 rrddim_set(st, "write", cg->io_service_bytes.Write);
1118 if(cg->io_serviced.updated && cg->io_serviced.Read + cg->io_serviced.Write > 0) {
1119 st = rrdset_find_bytype(type, "serviced_ops");
1121 snprintf(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1122 st = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.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->io_serviced.Read);
1131 rrddim_set(st, "write", cg->io_serviced.Write);
1135 if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.Read + cg->throttle_io_service_bytes.Write > 0) {
1136 st = rrdset_find_bytype(type, "io");
1138 snprintf(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title);
1139 st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
1140 update_every, RRDSET_TYPE_LINE);
1142 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1143 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1145 else rrdset_next(st);
1147 rrddim_set(st, "read", cg->throttle_io_service_bytes.Read);
1148 rrddim_set(st, "write", cg->throttle_io_service_bytes.Write);
1153 if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.Read + cg->throttle_io_serviced.Write > 0) {
1154 st = rrdset_find_bytype(type, "throttle_serviced_ops");
1156 snprintf(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title);
1157 st = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", 41200,
1158 update_every, RRDSET_TYPE_LINE);
1160 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
1161 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
1163 else rrdset_next(st);
1165 rrddim_set(st, "read", cg->throttle_io_serviced.Read);
1166 rrddim_set(st, "write", cg->throttle_io_serviced.Write);
1170 if(cg->io_queued.updated) {
1171 st = rrdset_find_bytype(type, "queued_ops");
1173 snprintf(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title);
1174 st = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", 42000,
1175 update_every, RRDSET_TYPE_LINE);
1177 rrddim_add(st, "read", NULL, 1, 1, RRDDIM_ABSOLUTE);
1178 rrddim_add(st, "write", NULL, -1, 1, RRDDIM_ABSOLUTE);
1180 else rrdset_next(st);
1182 rrddim_set(st, "read", cg->io_queued.Read);
1183 rrddim_set(st, "write", cg->io_queued.Write);
1187 if(cg->io_merged.updated && cg->io_merged.Read + cg->io_merged.Write > 0) {
1188 st = rrdset_find_bytype(type, "merged_ops");
1190 snprintf(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title);
1191 st = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", 42100,
1192 update_every, RRDSET_TYPE_LINE);
1194 rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
1195 rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
1197 else rrdset_next(st);
1199 rrddim_set(st, "read", cg->io_merged.Read);
1200 rrddim_set(st, "write", cg->io_merged.Write);
1205 debug(D_CGROUP, "done updating cgroups charts");
1208 // ----------------------------------------------------------------------------
1211 int do_sys_fs_cgroup(int update_every, unsigned long long dt) {
1212 static int cgroup_global_config_read = 0;
1213 static time_t last_run = 0;
1214 time_t now = time(NULL);
1218 if(unlikely(!cgroup_global_config_read)) {
1219 read_cgroup_plugin_configuration();
1220 cgroup_global_config_read = 1;
1223 if(unlikely(cgroup_enable_new_cgroups_detected_at_runtime && now - last_run > cgroup_check_for_new_every)) {
1228 read_all_cgroups(cgroup_root);
1229 update_cgroup_charts(update_every);
1234 void *cgroups_main(void *ptr)
1238 info("CGROUP Plugin thread created with task id %d", gettid());
1240 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
1241 error("Cannot set pthread cancel type to DEFERRED.");
1243 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
1244 error("Cannot set pthread cancel state to ENABLE.");
1246 struct rusage thread;
1248 // when ZERO, attempt to do it
1249 int vdo_sys_fs_cgroup = 0;
1250 int vdo_cpu_netdata = !config_get_boolean("plugin:cgroups", "cgroups plugin resources", 1);
1252 // keep track of the time each module was called
1253 unsigned long long sutime_sys_fs_cgroup = 0ULL;
1255 // the next time we will run - aligned properly
1256 unsigned long long sunext = (time(NULL) - (time(NULL) % rrd_update_every) + rrd_update_every) * 1000000ULL;
1257 unsigned long long sunow;
1259 RRDSET *stcpu_thread = NULL;
1262 if(unlikely(netdata_exit)) break;
1264 // delay until it is our time to run
1265 while((sunow = timems()) < sunext)
1266 usleep((useconds_t)(sunext - sunow));
1268 // find the next time we need to run
1269 while(timems() > sunext)
1270 sunext += rrd_update_every * 1000000ULL;
1272 if(unlikely(netdata_exit)) break;
1274 // BEGIN -- the job to be done
1276 if(!vdo_sys_fs_cgroup) {
1277 debug(D_PROCNETDEV_LOOP, "PROCNETDEV: calling do_sys_fs_cgroup().");
1279 vdo_sys_fs_cgroup = do_sys_fs_cgroup(rrd_update_every, (sutime_sys_fs_cgroup > 0)?sunow - sutime_sys_fs_cgroup:0ULL);
1280 sutime_sys_fs_cgroup = sunow;
1282 if(unlikely(netdata_exit)) break;
1284 // END -- the job is done
1286 // --------------------------------------------------------------------
1288 if(!vdo_cpu_netdata) {
1289 getrusage(RUSAGE_THREAD, &thread);
1291 if(!stcpu_thread) stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu");
1293 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);
1295 rrddim_add(stcpu_thread, "user", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1296 rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
1298 else rrdset_next(stcpu_thread);
1300 rrddim_set(stcpu_thread, "user" , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
1301 rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
1302 rrdset_done(stcpu_thread);