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/**
* collectd - src/load.c
* Copyright (C) 2005-2008 Florian octo Forster
* Copyright (C) 2009 Manuel Sanmartin
*
* 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; only version 2 of the License is applicable.
*
* 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.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Florian octo Forster <octo at verplant.org>
* Manuel Sanmartin
**/
#define _BSD_SOURCE
#include "collectd.h"
#include "common.h"
#include "plugin.h"
#ifdef HAVE_SYS_LOADAVG_H
#include <sys/loadavg.h>
#endif
#if HAVE_STATGRAB_H
# include <statgrab.h>
#endif
#ifdef HAVE_GETLOADAVG
#if !defined(LOADAVG_1MIN) || !defined(LOADAVG_5MIN) || !defined(LOADAVG_15MIN)
#define LOADAVG_1MIN 0
#define LOADAVG_5MIN 1
#define LOADAVG_15MIN 2
#endif
#endif /* defined(HAVE_GETLOADAVG) */
#ifdef HAVE_PERFSTAT
# include <sys/proc.h> /* AIX 5 */
# include <sys/protosw.h>
# include <libperfstat.h>
#endif /* HAVE_PERFSTAT */
static void load_submit (gauge_t snum, gauge_t mnum, gauge_t lnum)
{
value_t values[3];
value_list_t vl = VALUE_LIST_INIT;
values[0].gauge = snum;
values[1].gauge = mnum;
values[2].gauge = lnum;
vl.values = values;
vl.values_len = STATIC_ARRAY_SIZE (values);
sstrncpy (vl.host, hostname_g, sizeof (vl.host));
sstrncpy (vl.plugin, "load", sizeof (vl.plugin));
sstrncpy (vl.type, "load", sizeof (vl.type));
plugin_dispatch_values (&vl);
}
static int load_read (void)
{
#if defined(HAVE_GETLOADAVG)
double load[3];
if (getloadavg (load, 3) == 3)
load_submit (load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
else
{
char errbuf[1024];
WARNING ("load: getloadavg failed: %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
}
/* #endif HAVE_GETLOADAVG */
#elif defined(KERNEL_LINUX)
gauge_t snum, mnum, lnum;
FILE *loadavg;
char buffer[16];
char *fields[8];
int numfields;
if ((loadavg = fopen ("/proc/loadavg", "r")) == NULL)
{
char errbuf[1024];
WARNING ("load: fopen: %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
return (-1);
}
if (fgets (buffer, 16, loadavg) == NULL)
{
char errbuf[1024];
WARNING ("load: fgets: %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
fclose (loadavg);
return (-1);
}
if (fclose (loadavg))
{
char errbuf[1024];
WARNING ("load: fclose: %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
}
numfields = strsplit (buffer, fields, 8);
if (numfields < 3)
return (-1);
snum = atof (fields[0]);
mnum = atof (fields[1]);
lnum = atof (fields[2]);
load_submit (snum, mnum, lnum);
/* #endif KERNEL_LINUX */
#elif HAVE_LIBSTATGRAB
gauge_t snum, mnum, lnum;
sg_load_stats *ls;
if ((ls = sg_get_load_stats ()) == NULL)
return;
snum = ls->min1;
mnum = ls->min5;
lnum = ls->min15;
load_submit (snum, mnum, lnum);
/* #endif HAVE_LIBSTATGRAB */
#elif HAVE_PERFSTAT
gauge_t snum, mnum, lnum;
perfstat_cpu_total_t cputotal;
if (perfstat_cpu_total(NULL, &cputotal, sizeof(perfstat_cpu_total_t), 1) < 0)
{
char errbuf[1024];
WARNING ("load: perfstat_cpu : %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
return (-1);
}
snum = (float)cputotal.loadavg[0]/(float)(1<<SBITS);
mnum = (float)cputotal.loadavg[1]/(float)(1<<SBITS);
lnum = (float)cputotal.loadavg[2]/(float)(1<<SBITS);
load_submit (snum, mnum, lnum);
/* #endif HAVE_PERFSTAT */
#else
# error "No applicable input method."
#endif
return (0);
}
void module_register (void)
{
plugin_register_read ("load", load_read);
} /* void module_register */
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