--- /dev/null
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <string.h>
+
+#include "common.h"
+#include "appconfig.h"
+#include "procfile.h"
+#include "log.h"
+#include "rrd.h"
+
+// ----------------------------------------------------------------------------
+// cgroup globals
+
+static int cgroup_enable_cpuacct_stat = CONFIG_ONDEMAND_ONDEMAND;
+static int cgroup_enable_cpuacct_usage = CONFIG_ONDEMAND_ONDEMAND;
+static int cgroup_enable_memory = CONFIG_ONDEMAND_ONDEMAND;
+static int cgroup_enable_blkio = CONFIG_ONDEMAND_ONDEMAND;
+static int cgroup_enable_new_cgroups_detected_at_runtime = 1;
+static int cgroup_check_for_new_every = 10;
+static char *cgroup_cpuacct_base = NULL;
+static char *cgroup_blkio_base = NULL;
+static char *cgroup_memory_base = NULL;
+
+static int cgroup_root_count = 0;
+static int cgroup_root_max = 50;
+static int cgroup_max_depth = 0;
+
+void read_cgroup_plugin_configuration() {
+ cgroup_check_for_new_every = config_get_number("plugin:cgroups", "check for new plugin every", cgroup_check_for_new_every);
+
+ cgroup_enable_cpuacct_stat = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct stat", cgroup_enable_cpuacct_stat);
+ cgroup_enable_cpuacct_usage = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct usage", cgroup_enable_cpuacct_usage);
+ cgroup_enable_memory = config_get_boolean_ondemand("plugin:cgroups", "enable memory", cgroup_enable_memory);
+ cgroup_enable_blkio = config_get_boolean_ondemand("plugin:cgroups", "enable blkio", cgroup_enable_blkio);
+
+ char filename[FILENAME_MAX + 1];
+ snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/fs/cgroup/cpuacct");
+ cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
+
+ snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/fs/cgroup/blkio");
+ cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
+
+ snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/fs/cgroup/memory");
+ cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
+
+ cgroup_root_max = config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
+ cgroup_max_depth = config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
+
+ cgroup_enable_new_cgroups_detected_at_runtime = config_get_boolean("plugin:cgroups", "enable cgroups detected after first run", cgroup_enable_new_cgroups_detected_at_runtime);
+}
+
+// ----------------------------------------------------------------------------
+// cgroup objects
+
+struct blkio {
+ int updated;
+
+ char *filename;
+
+ unsigned long long Read;
+ unsigned long long Write;
+ unsigned long long Sync;
+ unsigned long long Async;
+ unsigned long long Total;
+};
+
+// https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
+struct memory {
+ int updated;
+
+ char *filename;
+
+ unsigned long long cache;
+ unsigned long long rss;
+ unsigned long long rss_huge;
+ unsigned long long mapped_file;
+ unsigned long long writeback;
+ unsigned long long pgpgin;
+ unsigned long long pgpgout;
+ unsigned long long pgfault;
+ unsigned long long pgmajfault;
+/* unsigned long long inactive_anon;
+ unsigned long long active_anon;
+ unsigned long long inactive_file;
+ unsigned long long active_file;
+ unsigned long long unevictable;
+ unsigned long long hierarchical_memory_limit;
+ unsigned long long total_cache;
+ unsigned long long total_rss;
+ unsigned long long total_rss_huge;
+ unsigned long long total_mapped_file;
+ unsigned long long total_writeback;
+ unsigned long long total_pgpgin;
+ unsigned long long total_pgpgout;
+ unsigned long long total_pgfault;
+ unsigned long long total_pgmajfault;
+ unsigned long long total_inactive_anon;
+ unsigned long long total_active_anon;
+ unsigned long long total_inactive_file;
+ unsigned long long total_active_file;
+ unsigned long long total_unevictable;
+*/
+};
+
+// https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
+struct cpuacct_stat {
+ int updated;
+
+ char *filename;
+
+ unsigned long long user;
+ unsigned long long system;
+};
+
+// https://www.kernel.org/doc/Documentation/cgroup-v1/cpuacct.txt
+struct cpuacct_usage {
+ int updated;
+
+ char *filename;
+
+ unsigned int cpus;
+ unsigned long long *cpu_percpu;
+};
+
+struct cgroup {
+ int available;
+ int enabled;
+
+ char *id;
+ uint32_t hash;
+
+ char *name;
+
+ struct cpuacct_stat cpuacct_stat;
+ struct cpuacct_usage cpuacct_usage;
+
+ struct memory memory;
+
+ struct blkio io_service_bytes; // bytes
+ struct blkio io_serviced; // operations
+
+ struct blkio throttle_io_service_bytes; // bytes
+ struct blkio throttle_io_serviced; // operations
+
+ struct blkio io_merged; // operations
+ struct blkio io_queued; // operations
+
+ struct cgroup *next;
+
+} *cgroup_root = NULL;
+
+// ----------------------------------------------------------------------------
+// read values from /sys
+
+void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
+ static procfile *ff = NULL;
+
+ static uint32_t user_hash = 0;
+ static uint32_t system_hash = 0;
+
+ if(unlikely(user_hash == 0)) {
+ user_hash = simple_hash("user");
+ system_hash = simple_hash("system");
+ }
+
+ cp->updated = 0;
+ if(cp->filename) {
+ ff = procfile_reopen(ff, cp->filename, NULL, PROCFILE_FLAG_DEFAULT);
+ if(!ff) return;
+
+ ff = procfile_readall(ff);
+ if(!ff) return;
+
+ unsigned long i, lines = procfile_lines(ff);
+
+ if(lines < 1) {
+ error("File '%s' should have 1+ lines.", cp->filename);
+ return;
+ }
+
+ for(i = 0; i < lines ; i++) {
+ char *s = procfile_lineword(ff, i, 0);
+ uint32_t hash = simple_hash(s);
+
+ if(hash == user_hash && !strcmp(s, "user"))
+ cp->user = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == system_hash && !strcmp(s, "system"))
+ cp->system = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+ }
+
+ cp->updated = 1;
+
+ // fprintf(stderr, "READ '%s': user: %llu, system: %llu\n", cp->filename, cp->user, cp->system);
+ }
+}
+
+void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
+ static procfile *ff = NULL;
+
+ ca->updated = 0;
+ if(ca->filename) {
+ ff = procfile_reopen(ff, ca->filename, NULL, PROCFILE_FLAG_DEFAULT);
+ if(!ff) return;
+
+ ff = procfile_readall(ff);
+ if(!ff) return;
+
+ if(procfile_lines(ff) < 1) {
+ error("File '%s' should have 1+ lines but has %d.", ca->filename, procfile_lines(ff));
+ return;
+ }
+
+ unsigned long i = procfile_linewords(ff, 0);
+ if(i <= 0) return;
+
+ // we may have 1 more CPU reported
+ while(i > 0) {
+ char *s = procfile_lineword(ff, 0, i - 1);
+ if(!*s) i--;
+ else break;
+ }
+
+ if(i != ca->cpus) {
+ free(ca->cpu_percpu);
+ }
+ ca->cpu_percpu = malloc(sizeof(unsigned long long) * i);
+ if(!ca->cpu_percpu)
+ fatal("Cannot allocate memory (%z bytes)", sizeof(unsigned long long) * i);
+
+ ca->cpus = i;
+
+ for(i = 0; i < ca->cpus ;i++) {
+ ca->cpu_percpu[i] = strtoull(procfile_lineword(ff, 0, i), NULL, 10);
+ // fprintf(stderr, "READ '%s': cpu%d/%d: %llu ('%s')\n", ca->filename, i, ca->cpus, ca->cpu_percpu[i], procfile_lineword(ff, 0, i));
+ }
+
+ ca->updated = 1;
+ }
+}
+
+void cgroup_read_blkio(struct blkio *io) {
+ static procfile *ff = NULL;
+
+ static uint32_t Read_hash = 0;
+ static uint32_t Write_hash = 0;
+ static uint32_t Sync_hash = 0;
+ static uint32_t Async_hash = 0;
+ static uint32_t Total_hash = 0;
+
+ if(unlikely(Read_hash == 0)) {
+ Read_hash = simple_hash("Read");
+ Write_hash = simple_hash("Write");
+ Sync_hash = simple_hash("Sync");
+ Async_hash = simple_hash("Async");
+ Total_hash = simple_hash("Total");
+ }
+
+ io->updated = 0;
+ if(io->filename) {
+ ff = procfile_reopen(ff, io->filename, NULL, PROCFILE_FLAG_DEFAULT);
+ if(!ff) return;
+
+ ff = procfile_readall(ff);
+ if(!ff) return;
+
+ unsigned long i, lines = procfile_lines(ff);
+
+ if(lines < 1) {
+ error("File '%s' should have 1+ lines.", io->filename);
+ return;
+ }
+
+ io->Read = 0;
+ io->Write = 0;
+ io->Sync = 0;
+ io->Async = 0;
+ io->Total = 0;
+
+ for(i = 0; i < lines ; i++) {
+ char *s = procfile_lineword(ff, i, 1);
+ uint32_t hash = simple_hash(s);
+
+ if(hash == Read_hash && !strcmp(s, "Read"))
+ io->Read += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
+
+ else if(hash == Write_hash && !strcmp(s, "Write"))
+ io->Write += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
+
+ else if(hash == Sync_hash && !strcmp(s, "Sync"))
+ io->Sync += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
+
+ else if(hash == Async_hash && !strcmp(s, "Async"))
+ io->Async += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
+
+ else if(hash == Total_hash && !strcmp(s, "Total"))
+ io->Total += strtoull(procfile_lineword(ff, i, 2), NULL, 10);
+ }
+
+ io->updated = 1;
+ // 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);
+ }
+}
+
+void cgroup_read_memory(struct memory *mem) {
+ static procfile *ff = NULL;
+
+ static uint32_t cache_hash = 0;
+ static uint32_t rss_hash = 0;
+ static uint32_t rss_huge_hash = 0;
+ static uint32_t mapped_file_hash = 0;
+ static uint32_t writeback_hash = 0;
+ static uint32_t pgpgin_hash = 0;
+ static uint32_t pgpgout_hash = 0;
+ static uint32_t pgfault_hash = 0;
+ static uint32_t pgmajfault_hash = 0;
+/* static uint32_t inactive_anon_hash = 0;
+ static uint32_t active_anon_hash = 0;
+ static uint32_t inactive_file_hash = 0;
+ static uint32_t active_file_hash = 0;
+ static uint32_t unevictable_hash = 0;
+ static uint32_t hierarchical_memory_limit_hash = 0;
+ static uint32_t total_cache_hash = 0;
+ static uint32_t total_rss_hash = 0;
+ static uint32_t total_rss_huge_hash = 0;
+ static uint32_t total_mapped_file_hash = 0;
+ static uint32_t total_writeback_hash = 0;
+ static uint32_t total_pgpgin_hash = 0;
+ static uint32_t total_pgpgout_hash = 0;
+ static uint32_t total_pgfault_hash = 0;
+ static uint32_t total_pgmajfault_hash = 0;
+ static uint32_t total_inactive_anon_hash = 0;
+ static uint32_t total_active_anon_hash = 0;
+ static uint32_t total_inactive_file_hash = 0;
+ static uint32_t total_active_file_hash = 0;
+ static uint32_t total_unevictable_hash = 0;
+*/
+ if(unlikely(cache_hash == 0)) {
+ cache_hash = simple_hash("cache");
+ rss_hash = simple_hash("rss");
+ rss_huge_hash = simple_hash("rss_huge");
+ mapped_file_hash = simple_hash("mapped_file");
+ writeback_hash = simple_hash("writeback");
+ pgpgin_hash = simple_hash("pgpgin");
+ pgpgout_hash = simple_hash("pgpgout");
+ pgfault_hash = simple_hash("pgfault");
+ pgmajfault_hash = simple_hash("pgmajfault");
+/* inactive_anon_hash = simple_hash("inactive_anon");
+ active_anon_hash = simple_hash("active_anon");
+ inactive_file_hash = simple_hash("inactive_file");
+ active_file_hash = simple_hash("active_file");
+ unevictable_hash = simple_hash("unevictable");
+ hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
+ total_cache_hash = simple_hash("total_cache");
+ total_rss_hash = simple_hash("total_rss");
+ total_rss_huge_hash = simple_hash("total_rss_huge");
+ total_mapped_file_hash = simple_hash("total_mapped_file");
+ total_writeback_hash = simple_hash("total_writeback");
+ total_pgpgin_hash = simple_hash("total_pgpgin");
+ total_pgpgout_hash = simple_hash("total_pgpgout");
+ total_pgfault_hash = simple_hash("total_pgfault");
+ total_pgmajfault_hash = simple_hash("total_pgmajfault");
+ total_inactive_anon_hash = simple_hash("total_inactive_anon");
+ total_active_anon_hash = simple_hash("total_active_anon");
+ total_inactive_file_hash = simple_hash("total_inactive_file");
+ total_active_file_hash = simple_hash("total_active_file");
+ total_unevictable_hash = simple_hash("total_unevictable");
+*/
+ }
+
+ mem->updated = 0;
+ if(mem->filename) {
+ ff = procfile_reopen(ff, mem->filename, NULL, PROCFILE_FLAG_DEFAULT);
+ if(!ff) return;
+
+ ff = procfile_readall(ff);
+ if(!ff) return;
+
+ unsigned long i, lines = procfile_lines(ff);
+
+ if(lines < 1) {
+ error("File '%s' should have 1+ lines.", mem->filename);
+ return;
+ }
+
+ for(i = 0; i < lines ; i++) {
+ char *s = procfile_lineword(ff, i, 0);
+ uint32_t hash = simple_hash(s);
+
+ if(hash == cache_hash && !strcmp(s, "cache"))
+ mem->cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == rss_hash && !strcmp(s, "rss"))
+ mem->rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == rss_huge_hash && !strcmp(s, "rss_huge"))
+ mem->rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == mapped_file_hash && !strcmp(s, "mapped_file"))
+ mem->mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == writeback_hash && !strcmp(s, "writeback"))
+ mem->writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == pgpgin_hash && !strcmp(s, "pgpgin"))
+ mem->pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == pgpgout_hash && !strcmp(s, "pgpgout"))
+ mem->pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == pgfault_hash && !strcmp(s, "pgfault"))
+ mem->pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))
+ mem->pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+/* else if(hash == inactive_anon_hash && !strcmp(s, "inactive_anon"))
+ mem->inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == active_anon_hash && !strcmp(s, "active_anon"))
+ mem->active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == inactive_file_hash && !strcmp(s, "inactive_file"))
+ mem->inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == active_file_hash && !strcmp(s, "active_file"))
+ mem->active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == unevictable_hash && !strcmp(s, "unevictable"))
+ mem->unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == hierarchical_memory_limit_hash && !strcmp(s, "hierarchical_memory_limit"))
+ mem->hierarchical_memory_limit = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_cache_hash && !strcmp(s, "total_cache"))
+ mem->total_cache = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_rss_hash && !strcmp(s, "total_rss"))
+ mem->total_rss = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_rss_huge_hash && !strcmp(s, "total_rss_huge"))
+ mem->total_rss_huge = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_mapped_file_hash && !strcmp(s, "total_mapped_file"))
+ mem->total_mapped_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_writeback_hash && !strcmp(s, "total_writeback"))
+ mem->total_writeback = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_pgpgin_hash && !strcmp(s, "total_pgpgin"))
+ mem->total_pgpgin = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_pgpgout_hash && !strcmp(s, "total_pgpgout"))
+ mem->total_pgpgout = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_pgfault_hash && !strcmp(s, "total_pgfault"))
+ mem->total_pgfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_pgmajfault_hash && !strcmp(s, "total_pgmajfault"))
+ mem->total_pgmajfault = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_inactive_anon_hash && !strcmp(s, "total_inactive_anon"))
+ mem->total_inactive_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_active_anon_hash && !strcmp(s, "total_active_anon"))
+ mem->total_active_anon = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_inactive_file_hash && !strcmp(s, "total_inactive_file"))
+ mem->total_inactive_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_active_file_hash && !strcmp(s, "total_active_file"))
+ mem->total_active_file = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+
+ else if(hash == total_unevictable_hash && !strcmp(s, "total_unevictable"))
+ mem->total_unevictable = strtoull(procfile_lineword(ff, i, 1), NULL, 10);
+*/
+ }
+
+ // fprintf(stderr, "READ: '%s', cache: %llu, rss: %llu, rss_huge: %llu, mapped_file: %llu, writeback: %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_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->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_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);
+
+ mem->updated = 1;
+ }
+}
+
+void cgroup_read(struct cgroup *cg) {
+ cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
+ cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
+ cgroup_read_memory(&cg->memory);
+ cgroup_read_blkio(&cg->io_service_bytes);
+ cgroup_read_blkio(&cg->io_serviced);
+ cgroup_read_blkio(&cg->throttle_io_service_bytes);
+ cgroup_read_blkio(&cg->throttle_io_serviced);
+ cgroup_read_blkio(&cg->io_merged);
+ cgroup_read_blkio(&cg->io_queued);
+}
+
+void read_all_cgroups(struct cgroup *cg) {
+ struct cgroup *i;
+
+ for(i = cg; i ; i = i->next)
+ cgroup_read(i);
+}
+
+// ----------------------------------------------------------------------------
+// add/remove/find cgroup objects
+
+struct cgroup *cgroup_add(const char *id) {
+ if(cgroup_root_count >= cgroup_root_max) {
+ info("Maximum number of cgroups reached (%d). Not adding cgroup '%s'", cgroup_root_count, id);
+ return NULL;
+ }
+
+ int def = cgroup_enable_new_cgroups_detected_at_runtime;
+ const char *name = id;
+ if(!*name) {
+ name = "/";
+
+ // disable by default the host cgroup
+ def = 0;
+ }
+ else {
+ if(*name == '/') name++;
+
+ // disable by default the parent cgroup
+ // for known cgroup managers
+ if(!strcmp(name, "lxc") || !strcmp(name, "docker"))
+ def = 0;
+ }
+
+ char option[FILENAME_MAX + 1];
+ snprintf(option, FILENAME_MAX, "enable cgroup %s", name);
+ if(!config_get_boolean("plugin:cgroups", option, def))
+ return NULL;
+
+ struct cgroup *cg = calloc(1, sizeof(struct cgroup));
+ if(cg) {
+ cg->id = strdup(id);
+ if(!cg->id) fatal("Cannot allocate memory for cgroup '%s'", id);
+
+ cg->hash = simple_hash(cg->id);
+
+ cg->name = strdup(name);
+ if(!cg->name) fatal("Cannot allocate memory for cgroup '%s'", id);
+
+ if(!cgroup_root)
+ cgroup_root = cg;
+ else {
+ // append it
+ struct cgroup *e;
+ for(e = cgroup_root; e->next ;e = e->next) ;
+ e->next = cg;
+ }
+
+ cgroup_root_count++;
+
+ // fprintf(stderr, " > added cgroup No %d, with id '%s' (%u) and name '%s'\n", cgroup_root_count, cg->id, cg->hash, cg->name);
+ }
+ else fatal("Cannot allocate memory for cgroup '%s'", id);
+
+ return cg;
+}
+
+void cgroup_remove(struct cgroup *cg) {
+ if(cg == cgroup_root) {
+ cgroup_root = cg->next;
+ }
+ else {
+ struct cgroup *e;
+ for(e = cgroup_root; e->next ;e = e->next)
+ if(unlikely(e->next == cg)) break;
+
+ if(e->next != cg) {
+ error("Cannot find cgroup '%s' in list of cgroups", cg->id);
+ }
+ else {
+ e->next = cg->next;
+ cg->next = NULL;
+ }
+ }
+
+ free(cg->cpuacct_usage.cpu_percpu);
+
+ free(cg->cpuacct_stat.filename);
+ free(cg->cpuacct_usage.filename);
+ free(cg->memory.filename);
+ free(cg->io_service_bytes.filename);
+ free(cg->io_serviced.filename);
+ free(cg->throttle_io_service_bytes.filename);
+ free(cg->throttle_io_serviced.filename);
+ free(cg->io_merged.filename);
+ free(cg->io_queued.filename);
+
+ free(cg->id);
+ free(cg->name);
+ free(cg);
+}
+
+// find if a given cgroup exists
+struct cgroup *cgroup_find(const char *id) {
+ uint32_t hash = simple_hash(id);
+
+ // fprintf(stderr, " > searching for '%s' (%u)\n", id, hash);
+
+ struct cgroup *cg;
+ for(cg = cgroup_root; cg ; cg = cg->next) {
+ if(hash == cg->hash && strcmp(id, cg->id) == 0)
+ break;
+ }
+
+ return cg;
+}
+
+// ----------------------------------------------------------------------------
+// detect running cgroups
+
+// callback for find_file_in_subdirs()
+void found_dir_in_subdir(const char *dir) {
+ // fprintf(stderr, "found dir '%s'\n", dir);
+
+ struct cgroup *cg = cgroup_find(dir);
+ if(!cg) {
+ if(*dir && cgroup_max_depth > 0) {
+ int depth = 0;
+ const char *s;
+
+ for(s = dir; *s ;s++)
+ if(unlikely(*s == '/'))
+ depth++;
+
+ if(depth > cgroup_max_depth) {
+ info("cgroup '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth);
+ return;
+ }
+ }
+ cg = cgroup_add(dir);
+ }
+
+ if(cg) cg->available = 1;
+}
+
+void find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) {
+ if(!this) this = base;
+ size_t dirlen = strlen(this), baselen = strlen(base);
+
+ DIR *dir = opendir(this);
+ if(!dir) return;
+
+ callback(&this[baselen]);
+
+ struct dirent *de = NULL;
+ while((de = readdir(dir))) {
+ if(de->d_type == DT_DIR
+ && (
+ (de->d_name[0] == '.' && de->d_name[1] == '\0')
+ || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+ ))
+ continue;
+
+ // fprintf(stderr, "examining '%s/%s'\n", this, de->d_name);
+
+ if(de->d_type == DT_DIR) {
+ char *s = malloc(dirlen + strlen(de->d_name) + 2);
+ if(s) {
+ strcpy(s, this);
+ strcat(s, "/");
+ strcat(s, de->d_name);
+ find_dir_in_subdirs(base, s, callback);
+ free(s);
+ }
+ }
+ }
+
+ closedir(dir);
+}
+
+void mark_all_cgroups_as_not_available() {
+ struct cgroup *cg;
+
+ // mark all as not available
+ for(cg = cgroup_root; cg ; cg = cg->next)
+ cg->available = 0;
+}
+
+struct cgroup *find_all_cgroups() {
+
+ mark_all_cgroups_as_not_available();
+
+ if(cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage)
+ find_dir_in_subdirs(cgroup_cpuacct_base, NULL, found_dir_in_subdir);
+
+ if(cgroup_enable_blkio)
+ find_dir_in_subdirs(cgroup_blkio_base, NULL, found_dir_in_subdir);
+
+ if(cgroup_enable_memory)
+ find_dir_in_subdirs(cgroup_memory_base, NULL, found_dir_in_subdir);
+
+ struct cgroup *cg;
+ for(cg = cgroup_root; cg ; cg = cg->next) {
+ // fprintf(stderr, " >>> CGROUP '%s' (%u - %s) with name '%s'\n", cg->id, cg->hash, cg->available?"available":"stopped", cg->name);
+
+ if(!cg->available) {
+ cgroup_remove(cg);
+ continue;
+ }
+
+ // check for newly added cgroups
+ // and update the filenames they read
+ char filename[FILENAME_MAX + 1];
+ if(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id);
+ cg->cpuacct_stat.filename = strdup(filename);
+ }
+ if(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id);
+ cg->cpuacct_usage.filename = strdup(filename);
+ }
+ if(cgroup_enable_memory && !cg->memory.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id);
+ cg->memory.filename = strdup(filename);
+ }
+ if(cgroup_enable_blkio) {
+ if(!cg->io_service_bytes.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id);
+ cg->io_service_bytes.filename = strdup(filename);
+ }
+ if(!cg->io_serviced.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id);
+ cg->io_serviced.filename = strdup(filename);
+ }
+ if(!cg->throttle_io_service_bytes.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id);
+ cg->throttle_io_service_bytes.filename = strdup(filename);
+ }
+ if(!cg->throttle_io_serviced.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id);
+ cg->throttle_io_serviced.filename = strdup(filename);
+ }
+ if(!cg->io_merged.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id);
+ cg->io_merged.filename = strdup(filename);
+ }
+ if(!cg->io_queued.filename) {
+ snprintf(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id);
+ cg->io_queued.filename = strdup(filename);
+ }
+ }
+ }
+
+ return cgroup_root;
+}
+
+// ----------------------------------------------------------------------------
+// generate charts
+
+#define CHART_TITLE_MAX 300
+
+void update_cgroup_charts(int update_every) {
+ char type[RRD_ID_LENGTH_MAX + 1];
+ char title[CHART_TITLE_MAX + 1];
+
+ struct cgroup *cg;
+ RRDSET *st;
+
+ for(cg = cgroup_root; cg ; cg = cg->next) {
+ if(!cg->available) continue;
+
+ if(cg->id[0] == '\0')
+ strcpy(type, "cgroup_host");
+ else if(cg->id[0] == '/')
+ snprintf(type, RRD_ID_LENGTH_MAX, "cgroup%s", cg->id);
+ else
+ snprintf(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->id);
+
+ netdata_fix_chart_id(type);
+
+ if(cg->cpuacct_stat.updated) {
+ st = rrdset_find_bytype(type, "cpu");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "CPU Usage for cgroup %s", cg->name);
+ st = rrdset_create(type, "cpu", NULL, "cpu", "cgroup.cpu", title, "%", 40000, update_every, RRDSET_TYPE_STACKED);
+
+ rrddim_add(st, "user", NULL, 100, hz, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "system", NULL, 100, hz, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "user", cg->cpuacct_stat.user);
+ rrddim_set(st, "system", cg->cpuacct_stat.system);
+ rrdset_done(st);
+ }
+
+ if(cg->cpuacct_usage.updated) {
+ char id[RRD_ID_LENGTH_MAX + 1];
+ unsigned int i;
+
+ st = rrdset_find_bytype(type, "cpu_per_core");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "CPU Usage Per Core for cgroup %s", cg->name);
+ st = rrdset_create(type, "cpu_per_core", NULL, "cpu", "cgroup.cpu_per_core", title, "%", 40100, update_every, RRDSET_TYPE_STACKED);
+
+ for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
+ snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
+ rrddim_add(st, id, NULL, 100, 1000000, RRDDIM_INCREMENTAL);
+ }
+ }
+ else rrdset_next(st);
+
+ for(i = 0; i < cg->cpuacct_usage.cpus ;i++) {
+ snprintf(id, CHART_TITLE_MAX, "cpu%d", i);
+ rrddim_set(st, id, cg->cpuacct_usage.cpu_percpu[i]);
+ }
+ rrdset_done(st);
+ }
+
+ if(cg->memory.updated) {
+ if(cg->memory.cache + cg->memory.rss + cg->memory.rss_huge + cg->memory.mapped_file > 0) {
+ st = rrdset_find_bytype(type, "mem");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->name);
+ st = rrdset_create(type, "mem", NULL, "mem", "cgroup.mem", title, "MB", 40200, update_every,
+ RRDSET_TYPE_STACKED);
+
+ rrddim_add(st, "cache", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "rss", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "rss_huge", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "mapped_file", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "cache", cg->memory.cache);
+ rrddim_set(st, "rss", cg->memory.rss);
+ rrddim_set(st, "rss_huge", cg->memory.rss_huge);
+ rrddim_set(st, "mapped_file", cg->memory.mapped_file);
+ rrdset_done(st);
+ }
+
+ st = rrdset_find_bytype(type, "writeback");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Writable Memory for cgroup %s", cg->name);
+ st = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300,
+ update_every, RRDSET_TYPE_AREA);
+
+ rrddim_add(st, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "writeback", cg->memory.writeback);
+ rrdset_done(st);
+
+ if(cg->memory.pgpgin + cg->memory.pgpgout > 0) {
+ st = rrdset_find_bytype(type, "mem_activity");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->name);
+ st = rrdset_create(type, "mem_activity", NULL, "mem", "cgroup.mem_activity", title, "MB/s",
+ 40400, update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "pgpgin", "in", sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "pgpgout", "out", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "pgpgin", cg->memory.pgpgin);
+ rrddim_set(st, "pgpgout", cg->memory.pgpgout);
+ rrdset_done(st);
+ }
+
+ if(cg->memory.pgfault + cg->memory.pgmajfault > 0) {
+ st = rrdset_find_bytype(type, "pgfaults");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->name);
+ st = rrdset_create(type, "pgfaults", NULL, "mem", "cgroup.pgfaults", title, "MB/s", 40500,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "pgfault", NULL, sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "pgmajfault", "swap", -sysconf(_SC_PAGESIZE), 1024 * 1024, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "pgfault", cg->memory.pgfault);
+ rrddim_set(st, "pgmajfault", cg->memory.pgmajfault);
+ rrdset_done(st);
+ }
+ }
+
+ if(cg->io_service_bytes.updated && cg->io_service_bytes.Read + cg->io_service_bytes.Write > 0) {
+ st = rrdset_find_bytype(type, "io");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->io_service_bytes.Read);
+ rrddim_set(st, "write", cg->io_service_bytes.Write);
+ rrdset_done(st);
+ }
+
+ if(cg->io_serviced.updated && cg->io_serviced.Read + cg->io_serviced.Write > 0) {
+ st = rrdset_find_bytype(type, "serviced_ops");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "serviced_ops", NULL, "disk", "cgroup.serviced_ops", title, "operations/s", 41200,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->io_serviced.Read);
+ rrddim_set(st, "write", cg->io_serviced.Write);
+ rrdset_done(st);
+ }
+
+ if(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.Read + cg->throttle_io_service_bytes.Write > 0) {
+ st = rrdset_find_bytype(type, "io");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "io", NULL, "disk", "cgroup.io", title, "KB/s", 41200,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->throttle_io_service_bytes.Read);
+ rrddim_set(st, "write", cg->throttle_io_service_bytes.Write);
+ rrdset_done(st);
+ }
+
+
+ if(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.Read + cg->throttle_io_serviced.Write > 0) {
+ st = rrdset_find_bytype(type, "throttle_serviced_ops");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "throttle_serviced_ops", NULL, "disk", "cgroup.throttle_serviced_ops", title, "operations/s", 41200,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "write", NULL, -1, 1, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->throttle_io_serviced.Read);
+ rrddim_set(st, "write", cg->throttle_io_serviced.Write);
+ rrdset_done(st);
+ }
+
+ if(cg->io_queued.updated) {
+ st = rrdset_find_bytype(type, "queued_ops");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "queued_ops", NULL, "disk", "cgroup.queued_ops", title, "operations", 42000,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1, RRDDIM_ABSOLUTE);
+ rrddim_add(st, "write", NULL, -1, 1, RRDDIM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->io_queued.Read);
+ rrddim_set(st, "write", cg->io_queued.Write);
+ rrdset_done(st);
+ }
+
+ if(cg->io_merged.updated && cg->io_merged.Read + cg->io_merged.Write > 0) {
+ st = rrdset_find_bytype(type, "merged_ops");
+ if(!st) {
+ snprintf(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->name);
+ st = rrdset_create(type, "merged_ops", NULL, "disk", "cgroup.merged_ops", title, "operations/s", 42100,
+ update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "read", NULL, 1, 1024, RRDDIM_INCREMENTAL);
+ rrddim_add(st, "write", NULL, -1, 1024, RRDDIM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "read", cg->io_merged.Read);
+ rrddim_set(st, "write", cg->io_merged.Write);
+ rrdset_done(st);
+ }
+ }
+}
+
+// ----------------------------------------------------------------------------
+// cgroups main
+
+int do_sys_fs_cgroup(int update_every, unsigned long long dt) {
+ static int cgroup_global_config_read = 0;
+ static time_t last_run = 0;
+ time_t now = time(NULL);
+
+ if(dt) {};
+
+ if(unlikely(!cgroup_global_config_read)) {
+ read_cgroup_plugin_configuration();
+ cgroup_global_config_read = 1;
+ }
+
+ if(unlikely(cgroup_enable_new_cgroups_detected_at_runtime && now - last_run > cgroup_check_for_new_every)) {
+ find_all_cgroups();
+ last_run = now;
+ }
+
+ read_all_cgroups(cgroup_root);
+ update_cgroup_charts(update_every);
+
+ return 0;
+}
projects / netdata.git / commitdiff