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contrib-munin/tools/munin-plugins-busybox/load.c
Helmut Grohne bb7bf0bcd7 refactor code
Added common functions autoconf_check_readable and fail.
Added some TODOs for later completion.
Updated messages from upstream plugins.
2013-02-05 12:38:12 +01:00

36 lines
928 B
C

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "common.h"
#define PROC_LOADAVG "/proc/loadavg"
int load(int argc, char **argv) {
FILE *f;
float val;
if(argc > 1) {
if(!strcmp(argv[1], "config")) {
puts("graph_title Load average\n"
"graph_args --base 1000 -l 0\n"
"graph_vlabel load\n"
"graph_scale no\n"
"graph_category system\n"
"load.label load");
print_warncrit("load");
puts("graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run \"immediately\").\n"
"load.info 5 minute load average");
return 0;
}
if(!strcmp(argv[1], "autoconf"))
return writeyes();
}
if(!(f=fopen(PROC_LOADAVG, "r")))
return fail("cannot open " PROC_LOADAVG);
if(1 != fscanf(f, "%*f %f", &val)) {
fclose(f);
return fail("cannot read from " PROC_LOADAVG);
}
fclose(f);
printf("load.value %.2f\n", val);
return 0;
}