diff options
Diffstat (limited to 'src/proc_stat.c')
| -rw-r--r-- | src/proc_stat.c | 407 |
1 files changed, 207 insertions, 200 deletions
diff --git a/src/proc_stat.c b/src/proc_stat.c index 154ba167..88cb820b 100644 --- a/src/proc_stat.c +++ b/src/proc_stat.c @@ -1,204 +1,211 @@ -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - #include "common.h" -#include "log.h" -#include "appconfig.h" -#include "procfile.h" -#include "rrd.h" -#include "plugin_proc.h" - -#define RRD_TYPE_STAT "cpu" -#define RRD_TYPE_STAT_LEN strlen(RRD_TYPE_STAT) int do_proc_stat(int update_every, unsigned long long dt) { - static procfile *ff = NULL; - static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1; - - if(do_cpu == -1) do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1); - if(do_cpu_cores == -1) do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1); - if(do_interrupts == -1) do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1); - if(do_context == -1) do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1); - if(do_forks == -1) do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1); - if(do_processes == -1) do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1); - - if(dt) {}; - - if(!ff) { - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/stat"); - ff = procfile_open(config_get("plugin:proc:/proc/stat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT); - } - if(!ff) return 1; - - ff = procfile_readall(ff); - if(!ff) return 0; // we return 0, so that we will retry to open it next time - - uint32_t lines = procfile_lines(ff), l; - uint32_t words; - - unsigned long long processes = 0, running = 0 , blocked = 0; - RRDSET *st; - - for(l = 0; l < lines ;l++) { - if(strncmp(procfile_lineword(ff, l, 0), "cpu", 3) == 0) { - words = procfile_linewords(ff, l); - if(words < 9) { - error("Cannot read /proc/stat cpu line. Expected 9 params, read %d.", words); - continue; - } - - char *id; - unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0; - - id = procfile_lineword(ff, l, 0); - user = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - nice = strtoull(procfile_lineword(ff, l, 2), NULL, 10); - system = strtoull(procfile_lineword(ff, l, 3), NULL, 10); - idle = strtoull(procfile_lineword(ff, l, 4), NULL, 10); - iowait = strtoull(procfile_lineword(ff, l, 5), NULL, 10); - irq = strtoull(procfile_lineword(ff, l, 6), NULL, 10); - softirq = strtoull(procfile_lineword(ff, l, 7), NULL, 10); - steal = strtoull(procfile_lineword(ff, l, 8), NULL, 10); - if(words >= 10) guest = strtoull(procfile_lineword(ff, l, 9), NULL, 10); - if(words >= 11) guest_nice = strtoull(procfile_lineword(ff, l, 10), NULL, 10); - - char *title = "Core utilization"; - char *type = RRD_TYPE_STAT; - char *context = "cpu.cpu"; - char *family = "utilization"; - long priority = 1000; - int isthistotal = 0; - - if(strcmp(id, "cpu") == 0) { - isthistotal = 1; - type = "system"; - title = "Total CPU utilization"; - context = "system.cpu"; - family = id; - priority = 100; - } - - if((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores)) { - st = rrdset_find_bytype(type, id); - if(!st) { - st = rrdset_create(type, id, NULL, family, context, title, "percentage", priority, update_every, RRDSET_TYPE_STACKED); - - long multiplier = 1; - long divisor = 1; // sysconf(_SC_CLK_TCK); - - rrddim_add(st, "guest_nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "guest", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "steal", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "softirq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "irq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "user", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "system", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_add(st, "iowait", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - - rrddim_add(st, "idle", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); - rrddim_hide(st, "idle"); - } - else rrdset_next(st); - - rrddim_set(st, "user", user); - rrddim_set(st, "nice", nice); - rrddim_set(st, "system", system); - rrddim_set(st, "idle", idle); - rrddim_set(st, "iowait", iowait); - rrddim_set(st, "irq", irq); - rrddim_set(st, "softirq", softirq); - rrddim_set(st, "steal", steal); - rrddim_set(st, "guest", guest); - rrddim_set(st, "guest_nice", guest_nice); - rrdset_done(st); - } - } - else if(strcmp(procfile_lineword(ff, l, 0), "intr") == 0) { - unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - - // -------------------------------------------------------------------- - - if(do_interrupts) { - st = rrdset_find_bytype("system", "intr"); - if(!st) { - st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next(st); - - rrddim_set(st, "interrupts", value); - rrdset_done(st); - } - } - else if(strcmp(procfile_lineword(ff, l, 0), "ctxt") == 0) { - unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - - // -------------------------------------------------------------------- - - if(do_context) { - st = rrdset_find_bytype("system", "ctxt"); - if(!st) { - st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE); - - rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next(st); - - rrddim_set(st, "switches", value); - rrdset_done(st); - } - } - else if(!processes && strcmp(procfile_lineword(ff, l, 0), "processes") == 0) { - processes = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - } - else if(!running && strcmp(procfile_lineword(ff, l, 0), "procs_running") == 0) { - running = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - } - else if(!blocked && strcmp(procfile_lineword(ff, l, 0), "procs_blocked") == 0) { - blocked = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - } - } - - // -------------------------------------------------------------------- - - if(do_forks) { - st = rrdset_find_bytype("system", "forks"); - if(!st) { - st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next(st); - - rrddim_set(st, "started", processes); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(do_processes) { - st = rrdset_find_bytype("system", "processes"); - if(!st) { - st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE); - - rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next(st); - - rrddim_set(st, "running", running); - rrddim_set(st, "blocked", blocked); - rrdset_done(st); - } - - return 0; + (void)dt; + + static procfile *ff = NULL; + static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1; + static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked; + + if(unlikely(do_cpu == -1)) { + do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1); + do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1); + do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1); + do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1); + do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1); + do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1); + + hash_intr = simple_hash("intr"); + hash_ctxt = simple_hash("ctxt"); + hash_processes = simple_hash("processes"); + hash_procs_running = simple_hash("procs_running"); + hash_procs_blocked = simple_hash("procs_blocked"); + } + + if(unlikely(!ff)) { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/stat"); + ff = procfile_open(config_get("plugin:proc:/proc/stat", "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 + + uint32_t lines = procfile_lines(ff), l; + uint32_t words; + + unsigned long long processes = 0, running = 0 , blocked = 0; + RRDSET *st; + + for(l = 0; l < lines ;l++) { + char *row_key = procfile_lineword(ff, l, 0); + uint32_t hash = simple_hash(row_key); + + // faster strncmp(row_key, "cpu", 3) == 0 + if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) { + words = procfile_linewords(ff, l); + if(unlikely(words < 9)) { + error("Cannot read /proc/stat cpu line. Expected 9 params, read %u.", words); + continue; + } + + char *id; + unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0; + + id = row_key; + user = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + nice = strtoull(procfile_lineword(ff, l, 2), NULL, 10); + system = strtoull(procfile_lineword(ff, l, 3), NULL, 10); + idle = strtoull(procfile_lineword(ff, l, 4), NULL, 10); + iowait = strtoull(procfile_lineword(ff, l, 5), NULL, 10); + irq = strtoull(procfile_lineword(ff, l, 6), NULL, 10); + softirq = strtoull(procfile_lineword(ff, l, 7), NULL, 10); + steal = strtoull(procfile_lineword(ff, l, 8), NULL, 10); + + guest = strtoull(procfile_lineword(ff, l, 9), NULL, 10); + user -= guest; + + guest_nice = strtoull(procfile_lineword(ff, l, 10), NULL, 10); + nice -= guest_nice; + + char *title, *type, *context, *family; + long priority; + int isthistotal; + + if(unlikely(strcmp(id, "cpu")) == 0) { + title = "Total CPU utilization"; + type = "system"; + context = "system.cpu"; + family = id; + priority = 100; + isthistotal = 1; + } + else { + title = "Core utilization"; + type = "cpu"; + context = "cpu.cpu"; + family = "utilization"; + priority = 1000; + isthistotal = 0; + } + + if(likely((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores))) { + st = rrdset_find_bytype(type, id); + if(unlikely(!st)) { + st = rrdset_create(type, id, NULL, family, context, title, "percentage", priority, update_every, RRDSET_TYPE_STACKED); + + long multiplier = 1; + long divisor = 1; // sysconf(_SC_CLK_TCK); + + rrddim_add(st, "guest_nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "guest", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "steal", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "softirq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "irq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "user", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "system", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_add(st, "iowait", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + + rrddim_add(st, "idle", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL); + rrddim_hide(st, "idle"); + } + else rrdset_next(st); + + rrddim_set(st, "user", user); + rrddim_set(st, "nice", nice); + rrddim_set(st, "system", system); + rrddim_set(st, "idle", idle); + rrddim_set(st, "iowait", iowait); + rrddim_set(st, "irq", irq); + rrddim_set(st, "softirq", softirq); + rrddim_set(st, "steal", steal); + rrddim_set(st, "guest", guest); + rrddim_set(st, "guest_nice", guest_nice); + rrdset_done(st); + } + } + else if(hash == hash_intr && strcmp(row_key, "intr") == 0) { + unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + + // -------------------------------------------------------------------- + + if(likely(do_interrupts)) { + st = rrdset_find_bytype("system", "intr"); + if(unlikely(!st)) { + st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE); + st->isdetail = 1; + + rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "interrupts", value); + rrdset_done(st); + } + } + else if(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0) { + unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + + // -------------------------------------------------------------------- + + if(likely(do_context)) { + st = rrdset_find_bytype("system", "ctxt"); + if(unlikely(!st)) { + st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE); + + rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "switches", value); + rrdset_done(st); + } + } + else if(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0) { + processes = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + } + else if(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0) { + running = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + } + else if(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0) { + blocked = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + } + } + + // -------------------------------------------------------------------- + + if(likely(do_forks)) { + st = rrdset_find_bytype("system", "forks"); + if(unlikely(!st)) { + st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE); + st->isdetail = 1; + + rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "started", processes); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(likely(do_processes)) { + st = rrdset_find_bytype("system", "processes"); + if(unlikely(!st)) { + st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE); + + rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE); + rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "running", running); + rrddim_set(st, "blocked", blocked); + rrdset_done(st); + } + + return 0; } |