3 int do_proc_stat(int update_every, usec_t dt) {
6 static procfile *ff = NULL;
7 static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1;
8 static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
10 if(unlikely(do_cpu == -1)) {
11 do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1);
12 do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1);
13 do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1);
14 do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1);
15 do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1);
16 do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1);
18 hash_intr = simple_hash("intr");
19 hash_ctxt = simple_hash("ctxt");
20 hash_processes = simple_hash("processes");
21 hash_procs_running = simple_hash("procs_running");
22 hash_procs_blocked = simple_hash("procs_blocked");
26 char filename[FILENAME_MAX + 1];
27 snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/stat");
28 ff = procfile_open(config_get("plugin:proc:/proc/stat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
29 if(unlikely(!ff)) return 1;
32 ff = procfile_readall(ff);
33 if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
35 size_t lines = procfile_lines(ff), l;
38 unsigned long long processes = 0, running = 0 , blocked = 0;
41 for(l = 0; l < lines ;l++) {
42 char *row_key = procfile_lineword(ff, l, 0);
43 uint32_t hash = simple_hash(row_key);
45 // faster strncmp(row_key, "cpu", 3) == 0
46 if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
47 words = procfile_linewords(ff, l);
48 if(unlikely(words < 9)) {
49 error("Cannot read /proc/stat cpu line. Expected 9 params, read %zu.", words);
54 unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0;
57 user = str2ull(procfile_lineword(ff, l, 1));
58 nice = str2ull(procfile_lineword(ff, l, 2));
59 system = str2ull(procfile_lineword(ff, l, 3));
60 idle = str2ull(procfile_lineword(ff, l, 4));
61 iowait = str2ull(procfile_lineword(ff, l, 5));
62 irq = str2ull(procfile_lineword(ff, l, 6));
63 softirq = str2ull(procfile_lineword(ff, l, 7));
64 steal = str2ull(procfile_lineword(ff, l, 8));
66 guest = str2ull(procfile_lineword(ff, l, 9));
69 guest_nice = str2ull(procfile_lineword(ff, l, 10));
72 char *title, *type, *context, *family;
76 if(unlikely(strcmp(id, "cpu")) == 0) {
77 title = "Total CPU utilization";
79 context = "system.cpu";
85 title = "Core utilization";
88 family = "utilization";
93 if(likely((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores))) {
94 st = rrdset_find_bytype(type, id);
96 st = rrdset_create(type, id, NULL, family, context, title, "percentage", priority, update_every, RRDSET_TYPE_STACKED);
99 long divisor = 1; // sysconf(_SC_CLK_TCK);
101 rrddim_add(st, "guest_nice", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
102 rrddim_add(st, "guest", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
103 rrddim_add(st, "steal", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
104 rrddim_add(st, "softirq", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
105 rrddim_add(st, "irq", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
106 rrddim_add(st, "user", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
107 rrddim_add(st, "system", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
108 rrddim_add(st, "nice", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
109 rrddim_add(st, "iowait", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
111 rrddim_add(st, "idle", NULL, multiplier, divisor, RRDDIM_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
112 rrddim_hide(st, "idle");
114 else rrdset_next(st);
116 rrddim_set(st, "user", user);
117 rrddim_set(st, "nice", nice);
118 rrddim_set(st, "system", system);
119 rrddim_set(st, "idle", idle);
120 rrddim_set(st, "iowait", iowait);
121 rrddim_set(st, "irq", irq);
122 rrddim_set(st, "softirq", softirq);
123 rrddim_set(st, "steal", steal);
124 rrddim_set(st, "guest", guest);
125 rrddim_set(st, "guest_nice", guest_nice);
129 else if(unlikely(hash == hash_intr && strcmp(row_key, "intr") == 0)) {
130 unsigned long long value = str2ull(procfile_lineword(ff, l, 1));
132 // --------------------------------------------------------------------
134 if(likely(do_interrupts)) {
135 st = rrdset_find_bytype("system", "intr");
137 st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE);
140 rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
142 else rrdset_next(st);
144 rrddim_set(st, "interrupts", value);
148 else if(unlikely(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0)) {
149 unsigned long long value = str2ull(procfile_lineword(ff, l, 1));
151 // --------------------------------------------------------------------
153 if(likely(do_context)) {
154 st = rrdset_find_bytype("system", "ctxt");
156 st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE);
158 rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
160 else rrdset_next(st);
162 rrddim_set(st, "switches", value);
166 else if(unlikely(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0)) {
167 processes = str2ull(procfile_lineword(ff, l, 1));
169 else if(unlikely(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0)) {
170 running = str2ull(procfile_lineword(ff, l, 1));
172 else if(unlikely(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0)) {
173 blocked = str2ull(procfile_lineword(ff, l, 1));
177 // --------------------------------------------------------------------
179 if(likely(do_forks)) {
180 st = rrdset_find_bytype("system", "forks");
182 st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE);
185 rrddim_add(st, "started", NULL, 1, 1, RRDDIM_ALGORITHM_INCREMENTAL);
187 else rrdset_next(st);
189 rrddim_set(st, "started", processes);
193 // --------------------------------------------------------------------
195 if(likely(do_processes)) {
196 st = rrdset_find_bytype("system", "processes");
198 st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE);
200 rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ALGORITHM_ABSOLUTE);
201 rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ALGORITHM_ABSOLUTE);
203 else rrdset_next(st);
205 rrddim_set(st, "running", running);
206 rrddim_set(st, "blocked", blocked);