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Diffstat (limited to 'src/pmdas/linux/proc_loadavg.c')
-rw-r--r--src/pmdas/linux/proc_loadavg.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/pmdas/linux/proc_loadavg.c b/src/pmdas/linux/proc_loadavg.c
new file mode 100644
index 0000000..676cfc6
--- /dev/null
+++ b/src/pmdas/linux/proc_loadavg.c
@@ -0,0 +1,45 @@
+/*
+ * 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;
+}