diff options
Diffstat (limited to 'src/sys_fs_cgroup.c')
| -rw-r--r-- | src/sys_fs_cgroup.c | 1310 |
1 files changed, 1310 insertions, 0 deletions
diff --git a/src/sys_fs_cgroup.c b/src/sys_fs_cgroup.c new file mode 100644 index 000000000..9f3d3f0fd --- /dev/null +++ b/src/sys_fs_cgroup.c @@ -0,0 +1,1310 @@ +#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" +#include "main.h" +#include "popen.h" +#include "proc_self_mountinfo.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 = 500; +static int cgroup_max_depth = 0; + +void read_cgroup_plugin_configuration() { + cgroup_check_for_new_every = config_get_number("plugin:cgroups", "check for new cgroups 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], *s; + struct mountinfo *mi, *root = mountinfo_read(); + + mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct"); + if(!mi) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct"); + if(!mi) s = "/sys/fs/cgroup/cpuacct"; + else s = mi->mount_point; + snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s); + cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename); + + mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio"); + if(!mi) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio"); + if(!mi) s = "/sys/fs/cgroup/blkio"; + else s = mi->mount_point; + snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s); + cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename); + + mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory"); + if(!mi) mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "memory"); + if(!mi) s = "/sys/fs/cgroup/memory"; + else s = mi->mount_point; + snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, s); + 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 new cgroups detected at run time", cgroup_enable_new_cgroups_detected_at_runtime); + + mountinfo_free(root); +} + +// ---------------------------------------------------------------------------- +// 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; + + int has_dirty_swap; + + 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 dirty; + unsigned long long swap; + 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_dirty; + unsigned long long total_swap; + 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; // found in the filesystem + int enabled; // enabled in the config + + char *id; + uint32_t hash; + + char *chart_id; + char *chart_title; + + 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 dirty_hash = 0; + static uint32_t swap_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_dirty_hash = 0; + static uint32_t total_swap_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"); + dirty_hash = simple_hash("dirty"); + swap_hash = simple_hash("swap"); + 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_dirty_hash = simple_hash("total_dirty"); + total_swap_hash = simple_hash("total_swap"); + 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 == dirty_hash && !strcmp(s, "dirty")) { + mem->dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10); + mem->has_dirty_swap = 1; + } + + else if(hash == swap_hash && !strcmp(s, "swap")) { + mem->swap = strtoull(procfile_lineword(ff, i, 1), NULL, 10); + mem->has_dirty_swap = 1; + } + + 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_dirty_hash && !strcmp(s, "total_dirty")) + mem->total_dirty = strtoull(procfile_lineword(ff, i, 1), NULL, 10); + + else if(hash == total_swap_hash && !strcmp(s, "total_swap")) + mem->total_swap = 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, 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); + + mem->updated = 1; + } +} + +void cgroup_read(struct cgroup *cg) { + debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id); + + 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 *root) { + debug(D_CGROUP, "reading metrics for all cgroups"); + + struct cgroup *cg; + + for(cg = root; cg ; cg = cg->next) + if(cg->enabled && cg->available) + cgroup_read(cg); +} + +// ---------------------------------------------------------------------------- +// add/remove/find cgroup objects + +#define CGROUP_CHARTID_LINE_MAX 1024 + +void cgroup_get_chart_id(struct cgroup *cg) { + debug(D_CGROUP, "getting the name of cgroup '%s'", cg->id); + + pid_t cgroup_pid; + char buffer[CGROUP_CHARTID_LINE_MAX + 1]; + + snprintfz(buffer, CGROUP_CHARTID_LINE_MAX, "exec %s '%s'", + config_get("plugin:cgroups", "script to get cgroup names", PLUGINS_DIR "/cgroup-name.sh"), cg->chart_id); + + debug(D_CGROUP, "executing command '%s' for cgroup '%s'", buffer, cg->id); + FILE *fp = mypopen(buffer, &cgroup_pid); + if(!fp) { + error("CGROUP: Cannot popen(\"%s\", \"r\").", buffer); + return; + } + debug(D_CGROUP, "reading from command '%s' for cgroup '%s'", buffer, cg->id); + char *s = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp); + debug(D_CGROUP, "closing command for cgroup '%s'", cg->id); + mypclose(fp, cgroup_pid); + debug(D_CGROUP, "closed command for cgroup '%s'", cg->id); + + if(s && *s && *s != '\n') { + debug(D_CGROUP, "cgroup '%s' should be renamed to '%s'", cg->id, s); + + trim(s); + + free(cg->chart_title); + cg->chart_title = strdup(s); + if(!cg->chart_title) + fatal("CGROUP: Cannot allocate memory for chart name of cgroup '%s' chart name: '%s'", cg->id, s); + + netdata_fix_chart_name(cg->chart_title); + + free(cg->chart_id); + cg->chart_id = strdup(s); + if(!cg->chart_id) + fatal("CGROUP: Cannot allocate memory for chart id of cgroup '%s' chart id: '%s'", cg->id, s); + + netdata_fix_chart_id(cg->chart_id); + + debug(D_CGROUP, "cgroup '%s' renamed to '%s' (title: '%s')", cg->id, cg->chart_id, cg->chart_title); + } + else debug(D_CGROUP, "cgroup '%s' is not to be renamed (will be shown as '%s')", cg->id, cg->chart_id); +} + +struct cgroup *cgroup_add(const char *id) { + debug(D_CGROUP, "adding cgroup '%s'", 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 *chart_id = id; + if(!*chart_id) { + chart_id = "/"; + + // disable by default the root cgroup + def = 0; + debug(D_CGROUP, "cgroup '%s' is the root container (by default %s)", id, (def)?"enabled":"disabled"); + } + else { + if(*chart_id == '/') chart_id++; + + size_t len = strlen(chart_id); + + // disable by default the parent cgroup + // for known cgroup managers + if(!strcmp(chart_id, "lxc") || + !strcmp(chart_id, "docker") || + !strcmp(chart_id, "libvirt") || + !strcmp(chart_id, "qemu") || + !strcmp(chart_id, "systemd") || + !strcmp(chart_id, "system.slice") || + !strcmp(chart_id, "machine.slice") || + !strcmp(chart_id, "user") || + !strcmp(chart_id, "system") || + !strcmp(chart_id, "machine") || + // starts with them + (len > 6 && !strncmp(chart_id, "user/", 6)) || + (len > 11 && !strncmp(chart_id, "user.slice/", 11)) || + // ends with them + (len > 5 && !strncmp(&chart_id[len - 5], ".user", 5)) || + (len > 5 && !strncmp(&chart_id[len - 5], ".swap", 5)) || + (len > 6 && !strncmp(&chart_id[len - 6], ".slice", 6)) || + (len > 6 && !strncmp(&chart_id[len - 6], ".mount", 6)) || + (len > 8 && !strncmp(&chart_id[len - 8], ".session", 8)) || + (len > 8 && !strncmp(&chart_id[len - 8], ".service", 8)) || + (len > 10 && !strncmp(&chart_id[len - 10], ".partition", 10)) + ) { + def = 0; + debug(D_CGROUP, "cgroup '%s' is %s (by default)", id, (def)?"enabled":"disabled"); + } + } + + struct cgroup *cg = calloc(1, sizeof(struct cgroup)); + if(!cg) fatal("Cannot allocate memory for cgroup '%s'", id); + + debug(D_CGROUP, "adding cgroup '%s'", id); + + cg->id = strdup(id); + if(!cg->id) fatal("Cannot allocate memory for cgroup '%s'", id); + + cg->hash = simple_hash(cg->id); + + cg->chart_id = strdup(chart_id); + if(!cg->chart_id) fatal("Cannot allocate memory for cgroup '%s'", id); + + cg->chart_title = strdup(chart_id); + if(!cg->chart_title) 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++; + + // fix the name by calling the external script + cgroup_get_chart_id(cg); + + char option[FILENAME_MAX + 1]; + snprintfz(option, FILENAME_MAX, "enable cgroup %s", cg->chart_title); + cg->enabled = config_get_boolean("plugin:cgroups", option, def); + + 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"); + + return cg; +} + +void cgroup_free(struct cgroup *cg) { + 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"); + + 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->chart_id); + free(cg->chart_title); + free(cg); + + cgroup_root_count--; +} + +// find if a given cgroup exists +struct cgroup *cgroup_find(const char *id) { + debug(D_CGROUP, "searching for cgroup '%s'", id); + + uint32_t hash = simple_hash(id); + + struct cgroup *cg; + for(cg = cgroup_root; cg ; cg = cg->next) { + if(hash == cg->hash && strcmp(id, cg->id) == 0) + break; + } + + debug(D_CGROUP, "cgroup_find('%s') %s", id, (cg)?"found":"not found"); + return cg; +} + +// ---------------------------------------------------------------------------- +// detect running cgroups + +// callback for find_file_in_subdirs() +void found_subdir_in_dir(const char *dir) { + debug(D_CGROUP, "examining cgroup dir '%s'", 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; + } + } + debug(D_CGROUP, "will add dir '%s' as cgroup", dir); + cg = cgroup_add(dir); + } + + if(cg) cg->available = 1; +} + +void find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) { + int enabled = -1; + if(!this) this = base; + size_t dirlen = strlen(this), baselen = strlen(base); + const char *relative_path = &this[baselen]; + + DIR *dir = opendir(this); + if(!dir) return; + + callback(relative_path); + + 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; + + debug(D_CGROUP, "examining '%s/%s'", this, de->d_name); + + if(de->d_type == DT_DIR) { + if(enabled == -1) { + const char *r = relative_path; + if(*r == '\0') r = "/"; + else if (*r == '/') r++; + + // we check for this option here + // so that the config will not have settings + // for leaf directories + char option[FILENAME_MAX + 1]; + snprintfz(option, FILENAME_MAX, "search for cgroups under %s", r); + option[FILENAME_MAX] = '\0'; + enabled = config_get_boolean("plugin:cgroups", option, 1); + } + + if(enabled) { + 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() { + debug(D_CGROUP, "marking all cgroups as not available"); + + struct cgroup *cg; + + // mark all as not available + for(cg = cgroup_root; cg ; cg = cg->next) + cg->available = 0; +} + +void cleanup_all_cgroups() { + struct cgroup *cg = cgroup_root, *last = NULL; + + for(; cg ;) { + if(!cg->available) { + + if(!last) + cgroup_root = cg->next; + else + last->next = cg->next; + + cgroup_free(cg); + + if(!last) + cg = cgroup_root; + else + cg = last->next; + } + else { + last = cg; + cg = cg->next; + } + } +} + +void find_all_cgroups() { + debug(D_CGROUP, "searching for 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_subdir_in_dir); + + if(cgroup_enable_blkio) + find_dir_in_subdirs(cgroup_blkio_base, NULL, found_subdir_in_dir); + + if(cgroup_enable_memory) + find_dir_in_subdirs(cgroup_memory_base, NULL, found_subdir_in_dir); + + // remove any non-existing cgroups + cleanup_all_cgroups(); + + 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(unlikely(!cg->available)) + continue; + + debug(D_CGROUP, "checking paths for cgroup '%s'", cg->id); + + // 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) { + snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id); + cg->cpuacct_stat.filename = strdup(filename); + debug(D_CGROUP, "cpuacct.stat filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_stat.filename); + } + if(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id); + cg->cpuacct_usage.filename = strdup(filename); + debug(D_CGROUP, "cpuacct.usage_percpu filename for cgroup '%s': '%s'", cg->id, cg->cpuacct_usage.filename); + } + if(cgroup_enable_memory && !cg->memory.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id); + cg->memory.filename = strdup(filename); + debug(D_CGROUP, "memory.stat filename for cgroup '%s': '%s'", cg->id, cg->memory.filename); + } + if(cgroup_enable_blkio) { + if(!cg->io_service_bytes.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id); + cg->io_service_bytes.filename = strdup(filename); + debug(D_CGROUP, "io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->io_service_bytes.filename); + } + if(!cg->io_serviced.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id); + cg->io_serviced.filename = strdup(filename); + debug(D_CGROUP, "io_serviced filename for cgroup '%s': '%s'", cg->id, cg->io_serviced.filename); + } + if(!cg->throttle_io_service_bytes.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id); + cg->throttle_io_service_bytes.filename = strdup(filename); + debug(D_CGROUP, "throttle_io_service_bytes filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_service_bytes.filename); + } + if(!cg->throttle_io_serviced.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id); + cg->throttle_io_serviced.filename = strdup(filename); + debug(D_CGROUP, "throttle_io_serviced filename for cgroup '%s': '%s'", cg->id, cg->throttle_io_serviced.filename); + } + if(!cg->io_merged.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id); + cg->io_merged.filename = strdup(filename); + debug(D_CGROUP, "io_merged filename for cgroup '%s': '%s'", cg->id, cg->io_merged.filename); + } + if(!cg->io_queued.filename) { + snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id); + cg->io_queued.filename = strdup(filename); + debug(D_CGROUP, "io_queued filename for cgroup '%s': '%s'", cg->id, cg->io_queued.filename); + } + } + } + + debug(D_CGROUP, "done searching for cgroups"); + return; +} + +// ---------------------------------------------------------------------------- +// generate charts + +#define CHART_TITLE_MAX 300 + +void update_cgroup_charts(int update_every) { + debug(D_CGROUP, "updating cgroups charts"); + + 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 || !cg->enabled) + continue; + + if(cg->id[0] == '\0') + strcpy(type, "cgroup_root"); + else if(cg->id[0] == '/') + snprintfz(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id); + else + snprintfz(type, RRD_ID_LENGTH_MAX, "cgroup_%s", cg->chart_id); + + netdata_fix_chart_id(type); + + if(cg->cpuacct_stat.updated) { + st = rrdset_find_bytype(type, "cpu"); + if(!st) { + snprintfz(title, CHART_TITLE_MAX, "CPU Usage for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "CPU Usage Per Core for cgroup %s", cg->chart_title); + 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++) { + snprintfz(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++) { + snprintfz(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) { + snprintfz(title, CHART_TITLE_MAX, "Memory Usage for cgroup %s", cg->chart_title); + 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); + if(cg->memory.has_dirty_swap) + rrddim_add(st, "swap", 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); + if(cg->memory.has_dirty_swap) + rrddim_set(st, "swap", cg->memory.swap); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Writeback Memory for cgroup %s", cg->chart_title); + st = rrdset_create(type, "writeback", NULL, "mem", "cgroup.writeback", title, "MB", 40300, + update_every, RRDSET_TYPE_AREA); + + if(cg->memory.has_dirty_swap) + rrddim_add(st, "dirty", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "writeback", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + if(cg->memory.has_dirty_swap) + rrddim_set(st, "dirty", cg->memory.dirty); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Memory Activity for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Memory Page Faults for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "I/O Bandwidth (all disks) for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Throttle I/O Bandwidth (all disks) for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Throttle Serviced I/O Operations (all disks) for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Queued I/O Operations (all disks) for cgroup %s", cg->chart_title); + 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) { + snprintfz(title, CHART_TITLE_MAX, "Merged I/O Operations (all disks) for cgroup %s", cg->chart_title); + 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); + } + } + + debug(D_CGROUP, "done updating cgroups charts"); +} + +// ---------------------------------------------------------------------------- +// 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; +} + +void *cgroups_main(void *ptr) +{ + if(ptr) { ; } + + info("CGROUP Plugin thread created with task id %d", gettid()); + + if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0) + error("Cannot set pthread cancel type to DEFERRED."); + + if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) + error("Cannot set pthread cancel state to ENABLE."); + + struct rusage thread; + + // when ZERO, attempt to do it + int vdo_sys_fs_cgroup = 0; + int vdo_cpu_netdata = !config_get_boolean("plugin:cgroups", "cgroups plugin resources", 1); + + // keep track of the time each module was called + unsigned long long sutime_sys_fs_cgroup = 0ULL; + + // the next time we will run - aligned properly + unsigned long long sunext = (time(NULL) - (time(NULL) % rrd_update_every) + rrd_update_every) * 1000000ULL; + unsigned long long sunow; + + RRDSET *stcpu_thread = NULL; + + for(;1;) { + if(unlikely(netdata_exit)) break; + + // delay until it is our time to run + while((sunow = timems()) < sunext) + usleep((useconds_t)(sunext - sunow)); + + // find the next time we need to run + while(timems() > sunext) + sunext += rrd_update_every * 1000000ULL; + + if(unlikely(netdata_exit)) break; + + // BEGIN -- the job to be done + + if(!vdo_sys_fs_cgroup) { + debug(D_PROCNETDEV_LOOP, "PROCNETDEV: calling do_sys_fs_cgroup()."); + sunow = timems(); + vdo_sys_fs_cgroup = do_sys_fs_cgroup(rrd_update_every, (sutime_sys_fs_cgroup > 0)?sunow - sutime_sys_fs_cgroup:0ULL); + sutime_sys_fs_cgroup = sunow; + } + if(unlikely(netdata_exit)) break; + + // END -- the job is done + + // -------------------------------------------------------------------- + + if(!vdo_cpu_netdata) { + getrusage(RUSAGE_THREAD, &thread); + + if(!stcpu_thread) stcpu_thread = rrdset_find("netdata.plugin_cgroups_cpu"); + if(!stcpu_thread) { + stcpu_thread = rrdset_create("netdata", "plugin_cgroups_cpu", NULL, "proc.internal", NULL, "NetData CGroups Plugin CPU usage", "milliseconds/s", 132000, rrd_update_every, RRDSET_TYPE_STACKED); + + rrddim_add(stcpu_thread, "user", NULL, 1, 1000, RRDDIM_INCREMENTAL); + rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL); + } + else rrdset_next(stcpu_thread); + + rrddim_set(stcpu_thread, "user" , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec); + rrddim_set(stcpu_thread, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec); + rrdset_done(stcpu_thread); + } + } + + pthread_exit(NULL); + return NULL; +} |