/**
* collectd - src/load.c
- * Copyright (C) 2005,2006 Florian octo Forster
+ * Copyright (C) 2005-2008 Florian octo Forster
+ * Copyright (C) 2009 Manuel Sanmartin
+ * Copyright (C) 2013 Vedran Bartonicek
*
* 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.
+ * 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
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
+ * Manuel Sanmartin
+ * Vedran Bartonicek <vbartoni at gmail.com>
**/
+#define _DEFAULT_SOURCE
+#define _BSD_SOURCE
+
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
-#define MODULE_NAME "load"
-
-#if defined(HAVE_GETLOADAVG) || defined(KERNEL_LINUX) || defined(HAVE_LIBSTATGRAB)
-# define LOAD_HAVE_READ 1
-#else
-# define LOAD_HAVE_READ 0
-#endif
+#include <unistd.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_1MIN 0
+#define LOADAVG_5MIN 1
#define LOADAVG_15MIN 2
#endif
#endif /* defined(HAVE_GETLOADAVG) */
-data_source_t dsrc[3] =
-{
- {"shortterm", DS_TYPE_GAUGE, 0.0, 100.0},
- {"midterm", DS_TYPE_GAUGE, 0.0, 100.0},
- {"longterm", DS_TYPE_GAUGE, 0.0, 100.0}
-};
-
-data_set_t ds =
-{
- "load", 3, dsrc
-};
-
-#if LOAD_HAVE_READ
-static void load_submit (double snum, double mnum, double lnum)
-{
- value_t values[3];
- value_list_t vl;
-
- values[0].gauge = snum;
- values[1].gauge = mnum;
- values[2].gauge = lnum;
-
- vl.values = values;
- vl.values_len = 3;
- strcpy (vl.host, "localhost"); /* FIXME */
- strcpy (vl.plugin, "load");
- strcpy (vl.plugin_instance, "");
- strcpy (vl.type_instance, "");
-
- plugin_dispatch_values ("load", &vl);
+#ifdef HAVE_PERFSTAT
+#include <libperfstat.h>
+#include <sys/proc.h> /* AIX 5 */
+#include <sys/protosw.h>
+#endif /* HAVE_PERFSTAT */
+
+static _Bool report_relative_load = 0;
+
+static const char *config_keys[] = {"ReportRelative"};
+static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
+
+static int load_config(const char *key, const char *value) {
+ if (strcasecmp(key, "ReportRelative") == 0)
+#ifdef _SC_NPROCESSORS_ONLN
+ report_relative_load = IS_TRUE(value) ? 1 : 0;
+#else
+ WARNING("load plugin: The \"ReportRelative\" configuration "
+ "is not available, because I can't determine the "
+ "number of CPUS on this system. Sorry.");
+#endif
+ return -1;
}
+static void load_submit(gauge_t snum, gauge_t mnum, gauge_t lnum) {
+ int cores = 0;
+
+#ifdef _SC_NPROCESSORS_ONLN
+ if (report_relative_load) {
+ if ((cores = sysconf(_SC_NPROCESSORS_ONLN)) < 1) {
+ WARNING("load: sysconf failed : %s", STRERRNO);
+ }
+ }
+#endif
+ if (cores > 0) {
+ snum /= cores;
+ mnum /= cores;
+ lnum /= cores;
+ }
+
+ value_list_t vl = VALUE_LIST_INIT;
+ value_t values[] = {
+ {.gauge = snum}, {.gauge = mnum}, {.gauge = lnum},
+ };
+
+ vl.values = values;
+ vl.values_len = STATIC_ARRAY_SIZE(values);
+
+ sstrncpy(vl.plugin, "load", sizeof(vl.plugin));
+ sstrncpy(vl.type, "load", sizeof(vl.type));
-static int load_read (void)
-{
+ if (cores > 0) {
+ sstrncpy(vl.type_instance, "relative", sizeof(vl.type_instance));
+ }
+
+ plugin_dispatch_values(&vl);
+}
+
+static int load_read(void) {
#if defined(HAVE_GETLOADAVG)
- double load[3];
+ double load[3];
- if (getloadavg (load, 3) == 3)
- load_submit (load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
- else
- syslog (LOG_WARNING, "load: getloadavg failed: %s", strerror (errno));
+ if (getloadavg(load, 3) == 3)
+ load_submit(load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
+ else {
+ WARNING("load: getloadavg failed: %s", STRERRNO);
+ }
/* #endif HAVE_GETLOADAVG */
#elif defined(KERNEL_LINUX)
- double snum, mnum, lnum;
- FILE *loadavg;
- char buffer[16];
-
- char *fields[8];
- int numfields;
-
- if ((loadavg = fopen ("/proc/loadavg", "r")) == NULL)
- {
- syslog (LOG_WARNING, "load: fopen: %s", strerror (errno));
- return;
- }
-
- if (fgets (buffer, 16, loadavg) == NULL)
- {
- syslog (LOG_WARNING, "load: fgets: %s", strerror (errno));
- fclose (loadavg);
- return;
- }
-
- if (fclose (loadavg))
- syslog (LOG_WARNING, "load: fclose: %s", strerror (errno));
-
- numfields = strsplit (buffer, fields, 8);
-
- if (numfields < 3)
- return;
-
- snum = atof (fields[0]);
- mnum = atof (fields[1]);
- lnum = atof (fields[2]);
-
- load_submit (snum, mnum, lnum);
+ gauge_t snum, mnum, lnum;
+ FILE *loadavg;
+ char buffer[16];
+
+ char *fields[8];
+ int numfields;
+
+ if ((loadavg = fopen("/proc/loadavg", "r")) == NULL) {
+ WARNING("load: fopen: %s", STRERRNO);
+ return -1;
+ }
+
+ if (fgets(buffer, 16, loadavg) == NULL) {
+ WARNING("load: fgets: %s", STRERRNO);
+ fclose(loadavg);
+ return -1;
+ }
+
+ if (fclose(loadavg)) {
+ WARNING("load: fclose: %s", STRERRNO);
+ }
+
+ 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 defined(HAVE_LIBSTATGRAB)
- double snum, mnum, lnum;
- sg_load_stats *ls;
+#elif HAVE_LIBSTATGRAB
+ gauge_t snum, mnum, lnum;
+ sg_load_stats *ls;
- if ((ls = sg_get_load_stats ()) == NULL)
- return;
+ if ((ls = sg_get_load_stats()) == NULL)
+ return;
- snum = ls->min1;
- mnum = ls->min5;
- lnum = ls->min15;
+ snum = ls->min1;
+ mnum = ls->min5;
+ lnum = ls->min15;
+ load_submit(snum, mnum, lnum);
+/* #endif HAVE_LIBSTATGRAB */
- load_submit (snum, mnum, lnum);
-#endif /* HAVE_LIBSTATGRAB */
+#elif HAVE_PERFSTAT
+ gauge_t snum, mnum, lnum;
+ perfstat_cpu_total_t cputotal;
- return (0);
-}
-#endif /* LOAD_HAVE_READ */
+ if (perfstat_cpu_total(NULL, &cputotal, sizeof(perfstat_cpu_total_t), 1) <
+ 0) {
+ WARNING("load: perfstat_cpu : %s", STRERRNO);
+ return -1;
+ }
-void module_register (void)
-{
- plugin_register_data_set (&ds);
-#if LOAD_HAVE_READ
- plugin_register_read ("load", load_read);
+ 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;
}
-#undef MODULE_NAME
+void module_register(void) {
+ plugin_register_config("load", load_config, config_keys, config_keys_num);
+ plugin_register_read("load", load_read);
+} /* void module_register */