10 #include "appconfig.h"
13 #include "plugin_proc.h"
15 int do_proc_stat(int update_every, unsigned long long dt) {
18 static procfile *ff = NULL;
19 static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1;
20 static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
22 if(unlikely(do_cpu == -1)) {
23 do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", 1);
24 do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", 1);
25 do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", 1);
26 do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", 1);
27 do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", 1);
28 do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", 1);
30 hash_intr = simple_hash("intr");
31 hash_ctxt = simple_hash("ctxt");
32 hash_processes = simple_hash("processes");
33 hash_procs_running = simple_hash("procs_running");
34 hash_procs_blocked = simple_hash("procs_blocked");
38 char filename[FILENAME_MAX + 1];
39 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/stat");
40 ff = procfile_open(config_get("plugin:proc:/proc/stat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
41 if(unlikely(!ff)) return 1;
44 ff = procfile_readall(ff);
45 if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
47 uint32_t lines = procfile_lines(ff), l;
50 unsigned long long processes = 0, running = 0 , blocked = 0;
53 for(l = 0; l < lines ;l++) {
54 char *row_key = procfile_lineword(ff, l, 0);
55 uint32_t hash = simple_hash(row_key);
57 // faster strncmp(row_key, "cpu", 3) == 0
58 if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
59 words = procfile_linewords(ff, l);
60 if(unlikely(words < 9)) {
61 error("Cannot read /proc/stat cpu line. Expected 9 params, read %u.", words);
66 unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0;
69 user = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
70 nice = strtoull(procfile_lineword(ff, l, 2), NULL, 10);
71 system = strtoull(procfile_lineword(ff, l, 3), NULL, 10);
72 idle = strtoull(procfile_lineword(ff, l, 4), NULL, 10);
73 iowait = strtoull(procfile_lineword(ff, l, 5), NULL, 10);
74 irq = strtoull(procfile_lineword(ff, l, 6), NULL, 10);
75 softirq = strtoull(procfile_lineword(ff, l, 7), NULL, 10);
76 steal = strtoull(procfile_lineword(ff, l, 8), NULL, 10);
77 if(words >= 10) guest = strtoull(procfile_lineword(ff, l, 9), NULL, 10);
78 if(words >= 11) guest_nice = strtoull(procfile_lineword(ff, l, 10), NULL, 10);
80 char *title, *type, *context, *family;
84 if(unlikely(strcmp(id, "cpu")) == 0) {
85 title = "Total CPU utilization";
87 context = "system.cpu";
93 title = "Core utilization";
96 family = "utilization";
101 if(likely((isthistotal && do_cpu) || (!isthistotal && do_cpu_cores))) {
102 st = rrdset_find_bytype(type, id);
104 st = rrdset_create(type, id, NULL, family, context, title, "percentage", priority, update_every, RRDSET_TYPE_STACKED);
107 long divisor = 1; // sysconf(_SC_CLK_TCK);
109 rrddim_add(st, "guest_nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
110 rrddim_add(st, "guest", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
111 rrddim_add(st, "steal", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
112 rrddim_add(st, "softirq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
113 rrddim_add(st, "irq", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
114 rrddim_add(st, "user", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
115 rrddim_add(st, "system", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
116 rrddim_add(st, "nice", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
117 rrddim_add(st, "iowait", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
119 rrddim_add(st, "idle", NULL, multiplier, divisor, RRDDIM_PCENT_OVER_DIFF_TOTAL);
120 rrddim_hide(st, "idle");
122 else rrdset_next(st);
124 rrddim_set(st, "user", user);
125 rrddim_set(st, "nice", nice);
126 rrddim_set(st, "system", system);
127 rrddim_set(st, "idle", idle);
128 rrddim_set(st, "iowait", iowait);
129 rrddim_set(st, "irq", irq);
130 rrddim_set(st, "softirq", softirq);
131 rrddim_set(st, "steal", steal);
132 rrddim_set(st, "guest", guest);
133 rrddim_set(st, "guest_nice", guest_nice);
137 else if(hash == hash_intr && strcmp(row_key, "intr") == 0) {
138 unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
140 // --------------------------------------------------------------------
142 if(likely(do_interrupts)) {
143 st = rrdset_find_bytype("system", "intr");
145 st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "CPU Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE);
148 rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
150 else rrdset_next(st);
152 rrddim_set(st, "interrupts", value);
156 else if(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0) {
157 unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
159 // --------------------------------------------------------------------
161 if(likely(do_context)) {
162 st = rrdset_find_bytype("system", "ctxt");
164 st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE);
166 rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL);
168 else rrdset_next(st);
170 rrddim_set(st, "switches", value);
174 else if(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0) {
175 processes = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
177 else if(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0) {
178 running = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
180 else if(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0) {
181 blocked = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
185 // --------------------------------------------------------------------
187 if(likely(do_forks)) {
188 st = rrdset_find_bytype("system", "forks");
190 st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE);
193 rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL);
195 else rrdset_next(st);
197 rrddim_set(st, "started", processes);
201 // --------------------------------------------------------------------
203 if(likely(do_processes)) {
204 st = rrdset_find_bytype("system", "processes");
206 st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE);
208 rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE);
209 rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE);
211 else rrdset_next(st);
213 rrddim_set(st, "running", running);
214 rrddim_set(st, "blocked", blocked);