1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "common.h"
#include "appconfig.h"
#include "procfile.h"
#include "rrd.h"
#include "plugin_proc.h"
#include "log.h"
#define MAX_INTERRUPTS 256
#define MAX_INTERRUPT_CPUS 256
#define MAX_INTERRUPT_NAME 50
struct interrupt {
int used;
char *id;
char name[MAX_INTERRUPT_NAME + 1];
unsigned long long value[MAX_INTERRUPT_CPUS];
unsigned long long total;
};
int do_proc_interrupts(int update_every, unsigned long long dt) {
static procfile *ff = NULL;
static int cpus = -1, do_per_core = -1;
if(dt) {};
if(do_per_core == -1) do_per_core = config_get_boolean("plugin:proc:/proc/interrupts", "interrupts per core", 1);
if(!ff) {
char filename[FILENAME_MAX + 1];
snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/interrupts");
ff = procfile_open(config_get("plugin:proc:/proc/interrupts", "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 = procfile_linewords(ff, 0), w;
// find how many CPUs are there
if(cpus == -1) {
cpus = 0;
for(w = 0; w < words ; w++) {
if(strncmp(procfile_lineword(ff, 0, w), "CPU", 3) == 0)
cpus++;
}
if(cpus > MAX_INTERRUPT_CPUS) cpus = MAX_INTERRUPT_CPUS;
}
if(!cpus) {
error("PLUGIN: PROC_INTERRUPTS: Cannot find the number of CPUs in /proc/interrupts");
return 1;
}
// allocate the size we need;
struct interrupt irrs[lines];
irrs[0].used = 0;
// loop through all lines
for(l = 1; l < lines ;l++) {
struct interrupt *irr = &irrs[l];
irr->used = 0;
irr->total = 0;
words = procfile_linewords(ff, l);
if(!words) continue;
irr->id = procfile_lineword(ff, l, 0);
if(!irr->id || !irr->id[0]) continue;
int idlen = strlen(irr->id);
if(irr->id[idlen - 1] == ':')
irr->id[idlen - 1] = '\0';
int c;
for(c = 0; c < cpus ;c++) {
if((c + 1) < (int)words)
irr->value[c] = strtoull(procfile_lineword(ff, l, (uint32_t)(c + 1)), NULL, 10);
else
irr->value[c] = 0;
irr->total += irr->value[c];
}
if(isdigit(irr->id[0]) && (uint32_t)(cpus + 2) < words) {
strncpy(irr->name, procfile_lineword(ff, l, words - 1), MAX_INTERRUPT_NAME);
irr->name[MAX_INTERRUPT_NAME] = '\0';
int nlen = strlen(irr->name);
if(nlen < (MAX_INTERRUPT_NAME-1)) {
irr->name[nlen] = '_';
strncpy(&irr->name[nlen + 1], irr->id, MAX_INTERRUPT_NAME - nlen);
irr->name[MAX_INTERRUPT_NAME] = '\0';
}
}
else {
strncpy(irr->name, irr->id, MAX_INTERRUPT_NAME);
irr->name[MAX_INTERRUPT_NAME] = '\0';
}
irr->used = 1;
}
RRDSET *st;
// --------------------------------------------------------------------
st = rrdset_find_bytype("system", "interrupts");
if(!st) {
st = rrdset_create("system", "interrupts", NULL, "interrupts", NULL, "System interrupts", "interrupts/s", 1000, update_every, RRDSET_TYPE_STACKED);
for(l = 0; l < lines ;l++) {
if(!irrs[l].used) continue;
rrddim_add(st, irrs[l].id, irrs[l].name, 1, 1, RRDDIM_INCREMENTAL);
}
}
else rrdset_next(st);
for(l = 0; l < lines ;l++) {
if(!irrs[l].used) continue;
rrddim_set(st, irrs[l].id, irrs[l].total);
}
rrdset_done(st);
if(do_per_core) {
int c;
for(c = 0; c < cpus ; c++) {
char id[256];
snprintf(id, 256, "cpu%d_interrupts", c);
st = rrdset_find_bytype("cpu", id);
if(!st) {
char name[256], title[256];
snprintf(name, 256, "cpu%d_interrupts", c);
snprintf(title, 256, "CPU%d Interrupts", c);
st = rrdset_create("cpu", id, name, "interrupts", "cpu.interrupts", title, "interrupts/s", 2000 + c, update_every, RRDSET_TYPE_STACKED);
for(l = 0; l < lines ;l++) {
if(!irrs[l].used) continue;
rrddim_add(st, irrs[l].id, irrs[l].name, 1, 1, RRDDIM_INCREMENTAL);
}
}
else rrdset_next(st);
for(l = 0; l < lines ;l++) {
if(!irrs[l].used) continue;
rrddim_set(st, irrs[l].id, irrs[l].value[c]);
}
rrdset_done(st);
}
}
return 0;
}
|
