rrd based system stats
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/***************************************************************************
* Copyright (C) 06/2006 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "helper.h"
#include "plugins.h"
#include "probe.h"
#define DS_STAT 1
#define DS_GC 2
struct sammler_plugin plugin;
static const char *ds_def_stat = {
"DS:in_hit:DERIVE:15:0:U "
"DS:in_slow_tot:DERIVE:15:0:U "
"DS:in_slow_mc:DERIVE:15:0:U "
"DS:in_no_route:DERIVE:15:0:U "
"DS:in_brd:DERIVE:15:0:U "
"DS:in_martian_dst:DERIVE:15:0:U "
"DS:in_martian_src:DERIVE:15:0:U "
"DS:out_hit:DERIVE:15:0:U "
"DS:out_slow_tot:DERIVE:15:0:U "
"DS:out_slow_mc:DERIVE:15:0:U "
"DS:in_hlist_search:DERIVE:15:0:U "
"DS:out_hlist_search:DERIVE:15:0:U "
};
static const char *ds_def_gc = {
"DS:entries:GAUGE:15:0:U "
"DS:gc_total:DERIVE:15:0:U "
"DS:gc_ignored:DERIVE:15:0:U "
"DS:gc_goal_miss:DERIVE:15:0:U "
"DS:gc_dst_overflow:DERIVE:15:0:U "
};
static const char * get_ds(int ds_id)
{
switch (ds_id) {
case DS_STAT:
return ds_def_stat;
case DS_GC:
return ds_def_gc;
default:
return NULL;
}
}
static int probe(void)
{
FILE *fp;
char *val[17], filename[16];
unsigned long long arr[17];
int i, len, cpu = 0;
fp = fopen("/proc/net/stat/rt_cache", "r");
if (fp == NULL) {
log_print(LOG_WARN, "plugin rtstat");
return -1;
}
while (fgets(plugin.buffer, plugin.bufsize, fp) != NULL) {
if (!strncmp(plugin.buffer, "entries", 7))
continue;
if (strsplit(plugin.buffer, " \t\n", val, 17) != 17)
continue;
for (i = 0; i < 17; i++)
arr[i] = strtoll(val[i], NULL, 16);
len = snprintf(filename, sizeof(filename), "rtstat-%d.rrd", cpu);
if (len < 0 || len >= sizeof(filename))
continue;
probe_submit(&plugin, filename, DS_STAT,
"%llu:%llu:%llu:%llu:%llu:%llu:%llu:%llu:%llu:%llu:%llu:%llu",
arr[1], arr[2], arr[3], arr[4],
arr[5], arr[6], arr[7], arr[8],
arr[9], arr[10], arr[15], arr[16]);
len = snprintf(filename, sizeof(filename), "rtcache-%d.rrd", cpu);
if (len < 0 || len >= sizeof(filename))
continue;
probe_submit(&plugin, filename, DS_GC,
"%llu:%llu:%llu:%llu:%llu",
arr[0], arr[11], arr[12], arr[13], arr[14]);
cpu++;
}
fclose(fp);
return 0;
}
struct sammler_plugin plugin = {
.name = "rtstat",
.interval = 10,
.bufsize = 1024,
.probe = &probe,
.get_ds = &get_ds,
};