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This commit is contained in:
Helmut Grohne 2008-06-21 11:33:06 +00:00 • committed by Steve Schnepp
parent 0cde2ae787
commit 209937078b
15 changed files with 737 additions and 0 deletions
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42
tools/munin-plugins-busybox/open_inodes.c Normal file
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#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "common.h"
int open_inodes(int argc, char **argv) {
FILE *f;
int nr, freen;
if(argc > 1) {
if(!strcmp(argv[1], "config")) {
puts("graph_title Inode table usage\n"
"graph_args --base 1000 -l 0\n"
"graph_vlabel number of open inodes\n"
"graph_category system\n"
"graph_info This graph monitors the Linux open inode table.\n"
"used.label open inodes\n"
"used.info The number of currently open inodes.\n"
"max.label inode table size\n"
"max.info The size of the system inode table. This is dynamically adjusted by the kernel.");
return 0;
}
if(!strcmp(argv[1], "autoconf")) {
if(0 == access("/proc/sys/fs/inode-nr", R_OK))
return writeyes();
else
return writeno("/proc/sys/fs/inode-nr not readable");
}
}
if(!(f=fopen("/proc/sys/fs/inode-nr", "r"))) {
fputs("cannot open /proc/sys/fs/inode-nr\n", stderr);
return 1;
}
if(2 != fscanf(f, "%d %d", &nr, &freen)) {
fclose(f);
fputs("cannot read from /proc/sys/fs/inode-nr\n", stderr);
return 1;
}
fclose(f);
printf("used.value %d\nmax.value %d\n", nr-freen, nr);
return 0;
}