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/*
* Linux /proc/loadavg metrics cluster
*
* Copyright (c) 2014 Red Hat.
* Copyright (c) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
*
* 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.
*/
#include "pmapi.h"
#include "pmda.h"
#include "indom.h"
#include "proc_loadavg.h"
int
refresh_proc_loadavg(proc_loadavg_t *proc_loadavg)
{
char buf[1024];
FILE *fp;
if ((fp = linux_statsfile("/proc/loadavg", buf, sizeof(buf))) == NULL)
return -oserror();
if (fgets(buf, sizeof(buf), fp) == NULL)
return -oserror();
fclose(fp);
/*
* 0.00 0.00 0.05 1/67 17563
* Lastpid added by Mike Mason <mmlnx@us.ibm.com>
*/
sscanf((const char *)buf, "%f %f %f %u/%u %u",
&proc_loadavg->loadavg[0], &proc_loadavg->loadavg[1],
&proc_loadavg->loadavg[2], &proc_loadavg->runnable,
&proc_loadavg->nprocs, &proc_loadavg->lastpid);
return 0;
}
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