#include "common.h" int do_proc_stat(int update_every, usec_t dt) { (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", netdata_configured_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 size_t lines = procfile_lines(ff), l; size_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 %zu.", 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 = str2ull(procfile_lineword(ff, l, 1)); nice = str2ull(procfile_lineword(ff, l, 2)); system = str2ull(procfile_lineword(ff, l, 3)); idle = str2ull(procfile_lineword(ff, l, 4)); iowait = str2ull(procfile_lineword(ff, l, 5)); irq = str2ull(procfile_lineword(ff, l, 6)); softirq = str2ull(procfile_lineword(ff, l, 7)); steal = str2ull(procfile_lineword(ff, l, 8)); guest = str2ull(procfile_lineword(ff, l, 9)); user -= guest; guest_nice = str2ull(procfile_lineword(ff, l, 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_localhost(type, id); if(unlikely(!st)) { st = rrdset_create_localhost(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, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "guest", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "steal", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "softirq", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "irq", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "user", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "system", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "nice", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "iowait", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL); rrddim_add(st, "idle", NULL, multiplier, divisor, RRD_ALGORITHM_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(unlikely(hash == hash_intr && strcmp(row_key, "intr") == 0)) { unsigned long long value = str2ull(procfile_lineword(ff, l, 1)); // -------------------------------------------------------------------- if(likely(do_interrupts)) { st = rrdset_find_bytype_localhost("system", "intr"); if(unlikely(!st)) { st = rrdset_create_localhost("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts" , "interrupts/s", 900, update_every, RRDSET_TYPE_LINE); rrdset_flag_set(st, RRDSET_FLAG_DETAIL); rrddim_add(st, "interrupts", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st); rrddim_set(st, "interrupts", value); rrdset_done(st); } } else if(unlikely(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0)) { unsigned long long value = str2ull(procfile_lineword(ff, l, 1)); // -------------------------------------------------------------------- if(likely(do_context)) { st = rrdset_find_bytype_localhost("system", "ctxt"); if(unlikely(!st)) { st = rrdset_create_localhost("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches" , "context switches/s", 800, update_every, RRDSET_TYPE_LINE); rrddim_add(st, "switches", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st); rrddim_set(st, "switches", value); rrdset_done(st); } } else if(unlikely(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0)) { processes = str2ull(procfile_lineword(ff, l, 1)); } else if(unlikely(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0)) { running = str2ull(procfile_lineword(ff, l, 1)); } else if(unlikely(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0)) { blocked = str2ull(procfile_lineword(ff, l, 1)); } } // -------------------------------------------------------------------- if(likely(do_forks)) { st = rrdset_find_bytype_localhost("system", "forks"); if(unlikely(!st)) { st = rrdset_create_localhost("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s" , 700, update_every, RRDSET_TYPE_LINE); rrdset_flag_set(st, RRDSET_FLAG_DETAIL); rrddim_add(st, "started", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); } else rrdset_next(st); rrddim_set(st, "started", processes); rrdset_done(st); } // -------------------------------------------------------------------- if(likely(do_processes)) { st = rrdset_find_bytype_localhost("system", "processes"); if(unlikely(!st)) { st = rrdset_create_localhost("system", "processes", NULL, "processes", NULL, "System Processes", "processes" , 600, update_every, RRDSET_TYPE_LINE); rrddim_add(st, "running", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); rrddim_add(st, "blocked", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st); rrddim_set(st, "running", running); rrddim_set(st, "blocked", blocked); rrdset_done(st); } return 0; }