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