// SPDX-License-Identifier: GPL-3.0-or-later #include "plugin_proc.h" #define PLUGIN_PROC_MODULE_VMSTAT_NAME "/proc/vmstat" #define OOM_KILL_STRING "oom_kill" int do_proc_vmstat(int update_every, usec_t dt) { (void)dt; static procfile *ff = NULL; static int do_swapio = -1, do_io = -1, do_pgfaults = -1, do_oom_kill = -1, do_numa = -1; static int has_numa = -1; static ARL_BASE *arl_base = NULL; static unsigned long long numa_foreign = 0ULL; static unsigned long long numa_hint_faults = 0ULL; static unsigned long long numa_hint_faults_local = 0ULL; static unsigned long long numa_huge_pte_updates = 0ULL; static unsigned long long numa_interleave = 0ULL; static unsigned long long numa_local = 0ULL; static unsigned long long numa_other = 0ULL; static unsigned long long numa_pages_migrated = 0ULL; static unsigned long long numa_pte_updates = 0ULL; static unsigned long long pgfault = 0ULL; static unsigned long long pgmajfault = 0ULL; static unsigned long long pgpgin = 0ULL; static unsigned long long pgpgout = 0ULL; static unsigned long long pswpin = 0ULL; static unsigned long long pswpout = 0ULL; static unsigned long long oom_kill = 0ULL; if(unlikely(!ff)) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/vmstat"); ff = procfile_open(config_get("plugin:proc:/proc/vmstat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT); if(unlikely(!ff)) return 1; } ff = procfile_readall(ff); if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time size_t lines = procfile_lines(ff), l; if(unlikely(!arl_base)) { do_swapio = config_get_boolean_ondemand("plugin:proc:/proc/vmstat", "swap i/o", CONFIG_BOOLEAN_AUTO); do_io = config_get_boolean("plugin:proc:/proc/vmstat", "disk i/o", CONFIG_BOOLEAN_YES); do_pgfaults = config_get_boolean("plugin:proc:/proc/vmstat", "memory page faults", CONFIG_BOOLEAN_YES); do_oom_kill = config_get_boolean("plugin:proc:/proc/vmstat", "out of memory kills", CONFIG_BOOLEAN_AUTO); do_numa = config_get_boolean_ondemand("plugin:proc:/proc/vmstat", "system-wide numa metric summary", CONFIG_BOOLEAN_AUTO); arl_base = arl_create("vmstat", NULL, 60); arl_expect(arl_base, "pgfault", &pgfault); arl_expect(arl_base, "pgmajfault", &pgmajfault); arl_expect(arl_base, "pgpgin", &pgpgin); arl_expect(arl_base, "pgpgout", &pgpgout); arl_expect(arl_base, "pswpin", &pswpin); arl_expect(arl_base, "pswpout", &pswpout); int has_oom_kill = 0; for (l = 0; l < lines; l++) { if (!strcmp(procfile_lineword(ff, l, 0), OOM_KILL_STRING)) { has_oom_kill = 1; break; } } if (has_oom_kill) arl_expect(arl_base, OOM_KILL_STRING, &oom_kill); else do_oom_kill = CONFIG_BOOLEAN_NO; if(do_numa == CONFIG_BOOLEAN_YES || (do_numa == CONFIG_BOOLEAN_AUTO && (get_numa_node_count() >= 2 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { arl_expect(arl_base, "numa_foreign", &numa_foreign); arl_expect(arl_base, "numa_hint_faults_local", &numa_hint_faults_local); arl_expect(arl_base, "numa_hint_faults", &numa_hint_faults); arl_expect(arl_base, "numa_huge_pte_updates", &numa_huge_pte_updates); arl_expect(arl_base, "numa_interleave", &numa_interleave); arl_expect(arl_base, "numa_local", &numa_local); arl_expect(arl_base, "numa_other", &numa_other); arl_expect(arl_base, "numa_pages_migrated", &numa_pages_migrated); arl_expect(arl_base, "numa_pte_updates", &numa_pte_updates); } else { // Do not expect numa metrics when they are not needed. // By not adding them, the ARL will stop processing the file // when all the expected metrics are collected. // Also ARL will not parse their values. has_numa = 0; do_numa = CONFIG_BOOLEAN_NO; } } arl_begin(arl_base); for(l = 0; l < lines ;l++) { size_t words = procfile_linewords(ff, l); if(unlikely(words < 2)) { if(unlikely(words)) error("Cannot read /proc/vmstat line %zu. Expected 2 params, read %zu.", l, words); continue; } if(unlikely(arl_check(arl_base, procfile_lineword(ff, l, 0), procfile_lineword(ff, l, 1)))) break; } // -------------------------------------------------------------------- if(do_swapio == CONFIG_BOOLEAN_YES || (do_swapio == CONFIG_BOOLEAN_AUTO && (pswpin || pswpout || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_swapio = CONFIG_BOOLEAN_YES; static RRDSET *st_swapio = NULL; static RRDDIM *rd_in = NULL, *rd_out = NULL; if(unlikely(!st_swapio)) { st_swapio = rrdset_create_localhost( "system" , "swapio" , NULL , "swap" , NULL , "Swap I/O" , "KiB/s" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_VMSTAT_NAME , NETDATA_CHART_PRIO_SYSTEM_SWAPIO , update_every , RRDSET_TYPE_AREA ); rd_in = rrddim_add(st_swapio, "in", NULL, sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_INCREMENTAL); rd_out = rrddim_add(st_swapio, "out", NULL, -sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st_swapio); rrddim_set_by_pointer(st_swapio, rd_in, pswpin); rrddim_set_by_pointer(st_swapio, rd_out, pswpout); rrdset_done(st_swapio); } // -------------------------------------------------------------------- if(do_io) { static RRDSET *st_io = NULL; static RRDDIM *rd_in = NULL, *rd_out = NULL; if(unlikely(!st_io)) { st_io = rrdset_create_localhost( "system" , "pgpgio" , NULL , "disk" , NULL , "Memory Paged from/to disk" , "KiB/s" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_VMSTAT_NAME , NETDATA_CHART_PRIO_SYSTEM_PGPGIO , update_every , RRDSET_TYPE_AREA ); rd_in = rrddim_add(st_io, "in", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_out = rrddim_add(st_io, "out", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st_io); rrddim_set_by_pointer(st_io, rd_in, pgpgin); rrddim_set_by_pointer(st_io, rd_out, pgpgout); rrdset_done(st_io); } // -------------------------------------------------------------------- if(do_pgfaults) { static RRDSET *st_pgfaults = NULL; static RRDDIM *rd_minor = NULL, *rd_major = NULL; if(unlikely(!st_pgfaults)) { st_pgfaults = rrdset_create_localhost( "mem" , "pgfaults" , NULL , "system" , NULL , "Memory Page Faults" , "faults/s" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_VMSTAT_NAME , NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS , update_every , RRDSET_TYPE_LINE ); rrdset_flag_set(st_pgfaults, RRDSET_FLAG_DETAIL); rd_minor = rrddim_add(st_pgfaults, "minor", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_major = rrddim_add(st_pgfaults, "major", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st_pgfaults); rrddim_set_by_pointer(st_pgfaults, rd_minor, pgfault); rrddim_set_by_pointer(st_pgfaults, rd_major, pgmajfault); rrdset_done(st_pgfaults); } // -------------------------------------------------------------------- if (do_oom_kill == CONFIG_BOOLEAN_YES || (do_oom_kill == CONFIG_BOOLEAN_AUTO && (oom_kill || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { static RRDSET *st_oom_kill = NULL; static RRDDIM *rd_oom_kill = NULL; do_oom_kill = CONFIG_BOOLEAN_YES; if(unlikely(!st_oom_kill)) { st_oom_kill = rrdset_create_localhost( "mem" , "oom_kill" , NULL , "system" , NULL , "Out of Memory Kills" , "kills/s" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_VMSTAT_NAME , NETDATA_CHART_PRIO_MEM_SYSTEM_OOM_KILL , update_every , RRDSET_TYPE_LINE ); rrdset_flag_set(st_oom_kill, RRDSET_FLAG_DETAIL); rd_oom_kill = rrddim_add(st_oom_kill, "kills", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st_oom_kill); rrddim_set_by_pointer(st_oom_kill, rd_oom_kill, oom_kill); rrdset_done(st_oom_kill); } // -------------------------------------------------------------------- // Ondemand criteria for NUMA. Since this won't change at run time, we // check it only once. We check whether the node count is >= 2 because // single-node systems have uninteresting statistics (since all accesses // are local). if(unlikely(has_numa == -1)) has_numa = (numa_local || numa_foreign || numa_interleave || numa_other || numa_pte_updates || numa_huge_pte_updates || numa_hint_faults || numa_hint_faults_local || numa_pages_migrated) ? 1 : 0; if(do_numa == CONFIG_BOOLEAN_YES || (do_numa == CONFIG_BOOLEAN_AUTO && has_numa)) { do_numa = CONFIG_BOOLEAN_YES; static RRDSET *st_numa = NULL; static RRDDIM *rd_local = NULL, *rd_foreign = NULL, *rd_interleave = NULL, *rd_other = NULL, *rd_pte_updates = NULL, *rd_huge_pte_updates = NULL, *rd_hint_faults = NULL, *rd_hint_faults_local = NULL, *rd_pages_migrated = NULL; if(unlikely(!st_numa)) { st_numa = rrdset_create_localhost( "mem" , "numa" , NULL , "numa" , NULL , "NUMA events" , "events/s" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_VMSTAT_NAME , NETDATA_CHART_PRIO_MEM_NUMA , update_every , RRDSET_TYPE_LINE ); rrdset_flag_set(st_numa, RRDSET_FLAG_DETAIL); // These depend on CONFIG_NUMA in the kernel. rd_local = rrddim_add(st_numa, "local", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_foreign = rrddim_add(st_numa, "foreign", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_interleave = rrddim_add(st_numa, "interleave", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_other = rrddim_add(st_numa, "other", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); // The following stats depend on CONFIG_NUMA_BALANCING in the // kernel. rd_pte_updates = rrddim_add(st_numa, "pte_updates", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_huge_pte_updates = rrddim_add(st_numa, "huge_pte_updates", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_hint_faults = rrddim_add(st_numa, "hint_faults", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_hint_faults_local = rrddim_add(st_numa, "hint_faults_local", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); rd_pages_migrated = rrddim_add(st_numa, "pages_migrated", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st_numa); rrddim_set_by_pointer(st_numa, rd_local, numa_local); rrddim_set_by_pointer(st_numa, rd_foreign, numa_foreign); rrddim_set_by_pointer(st_numa, rd_interleave, numa_interleave); rrddim_set_by_pointer(st_numa, rd_other, numa_other); rrddim_set_by_pointer(st_numa, rd_pte_updates, numa_pte_updates); rrddim_set_by_pointer(st_numa, rd_huge_pte_updates, numa_huge_pte_updates); rrddim_set_by_pointer(st_numa, rd_hint_faults, numa_hint_faults); rrddim_set_by_pointer(st_numa, rd_hint_faults_local, numa_hint_faults_local); rrddim_set_by_pointer(st_numa, rd_pages_migrated, numa_pages_migrated); rrdset_done(st_numa); } return 0; }