GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — netdata/src/proc_softirqs.c at master · gitqueue/netdata

Expand file tree

/

proc_softirqs.c

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
172 lines (134 loc) · 5.13 KB
/

proc_softirqs.c

Copy path

File metadata and controls

172 lines (134 loc) · 5.13 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
165
166
167
168
169
170
171
172
#include "common.h"
#define MAX_INTERRUPT_NAME 50
struct interrupt {
int used;
char *id;
char name[MAX_INTERRUPT_NAME + 1];
unsigned long long total;
unsigned long long value[];
};
// since each interrupt is variable in size
// we use this to calculate its record size
#define recordsize(cpus) (sizeof(struct interrupt) + (cpus * sizeof(unsigned long long)))
// given a base, get a pointer to each record
#define irrindex(base, line, cpus) ((struct interrupt *)&((char *)(base))[line * recordsize(cpus)])
static inline struct interrupt *get_interrupts_array(int lines, int cpus) {
static struct interrupt *irrs = NULL;
static int allocated = 0;
if(lines > allocated) {
irrs = (struct interrupt *)reallocz(irrs, lines * recordsize(cpus));
allocated = lines;
}
return irrs;
}
int do_proc_softirqs(int update_every, unsigned long long dt) {
static procfile *ff = NULL;
static int cpus = -1, do_per_core = -1;
struct interrupt *irrs = NULL;
if(dt) {};
if(do_per_core == -1) do_per_core = config_get_boolean("plugin:proc:/proc/softirqs", "interrupts per core", 1);
if(!ff) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/softirqs");
ff = procfile_open(config_get("plugin:proc:/proc/softirqs", "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;
if(!lines) {
error("Cannot read /proc/softirqs, zero lines reported.");
return 1;
}
// 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) {
error("PLUGIN: PROC_SOFTIRQS: Cannot find the number of CPUs in /proc/softirqs");
return 1;
}
// allocate the size we need;
irrs = get_interrupts_array(lines, cpus);
irrs[0].used = 0;
// loop through all lines
for(l = 1; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
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];
}
strncpyz(irr->name, irr->id, MAX_INTERRUPT_NAME);
irr->used = 1;
}
RRDSET *st;
// --------------------------------------------------------------------
st = rrdset_find_bytype("system", "softirqs");
if(!st) {
st = rrdset_create("system", "softirqs", NULL, "softirqs", NULL, "System softirqs", "softirqs/s", 950, update_every, RRDSET_TYPE_STACKED);
for(l = 0; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
if(!irr->used) continue;
rrddim_add(st, irr->id, irr->name, 1, 1, RRDDIM_INCREMENTAL);
}
}
else rrdset_next(st);
for(l = 0; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
if(!irr->used) continue;
rrddim_set(st, irr->id, irr->total);
}
rrdset_done(st);
if(do_per_core) {
int c;
for(c = 0; c < cpus ; c++) {
char id[50+1];
snprintfz(id, 50, "cpu%d_softirqs", c);
st = rrdset_find_bytype("cpu", id);
if(!st) {
// find if everything is zero
unsigned long long core_sum = 0 ;
for(l = 0; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
if(!irr->used) continue;
core_sum += irr->value[c];
}
if(core_sum == 0) continue; // try next core
char title[100+1];
snprintfz(title, 100, "CPU%d softirqs", c);
st = rrdset_create("cpu", id, NULL, "softirqs", "cpu.softirqs", title, "softirqs/s", 3000 + c, update_every, RRDSET_TYPE_STACKED);
for(l = 0; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
if(!irr->used) continue;
rrddim_add(st, irr->id, irr->name, 1, 1, RRDDIM_INCREMENTAL);
}
}
else rrdset_next(st);
for(l = 0; l < lines ;l++) {
struct interrupt *irr = irrindex(irrs, l, cpus);
if(!irr->used) continue;
rrddim_set(st, irr->id, irr->value[c]);
}
rrdset_done(st);
}
}
return 0;
}
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.