2 * collectd - src/load.c
3 * Copyright (C) 2005-2008 Florian octo Forster
4 * Copyright (C) 2009 Manuel Sanmartin
5 * Copyright (C) 2013 Vedran Bartonicek
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; only version 2 of the License is applicable.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 * Florian octo Forster <octo at collectd.org>
23 * Vedran Bartonicek <vbartoni at gmail.com>
26 #define _DEFAULT_SOURCE
32 #include "utils/common/common.h"
36 #ifdef HAVE_SYS_LOADAVG_H
37 #include <sys/loadavg.h>
44 #ifdef HAVE_GETLOADAVG
45 #if !defined(LOADAVG_1MIN) || !defined(LOADAVG_5MIN) || !defined(LOADAVG_15MIN)
46 #define LOADAVG_1MIN 0
47 #define LOADAVG_5MIN 1
48 #define LOADAVG_15MIN 2
50 #endif /* defined(HAVE_GETLOADAVG) */
53 #include <libperfstat.h>
54 #include <sys/proc.h> /* AIX 5 */
55 #include <sys/protosw.h>
56 #endif /* HAVE_PERFSTAT */
58 static bool report_relative_load;
60 static const char *config_keys[] = {"ReportRelative"};
61 static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
63 static int load_config(const char *key, const char *value) {
64 if (strcasecmp(key, "ReportRelative") == 0) {
65 #ifdef _SC_NPROCESSORS_ONLN
66 report_relative_load = IS_TRUE(value);
68 WARNING("load plugin: The \"ReportRelative\" configuration "
69 "is not available, because I can't determine the "
70 "number of CPUS on this system. Sorry.");
76 static void load_submit(gauge_t snum, gauge_t mnum, gauge_t lnum) {
79 #ifdef _SC_NPROCESSORS_ONLN
80 if (report_relative_load) {
81 if ((cores = sysconf(_SC_NPROCESSORS_ONLN)) < 1) {
82 WARNING("load: sysconf failed : %s", STRERRNO);
92 value_list_t vl = VALUE_LIST_INIT;
94 {.gauge = snum}, {.gauge = mnum}, {.gauge = lnum},
98 vl.values_len = STATIC_ARRAY_SIZE(values);
100 sstrncpy(vl.plugin, "load", sizeof(vl.plugin));
101 sstrncpy(vl.type, "load", sizeof(vl.type));
104 sstrncpy(vl.type_instance, "relative", sizeof(vl.type_instance));
107 plugin_dispatch_values(&vl);
110 static int load_read(void) {
111 #if defined(HAVE_GETLOADAVG)
114 if (getloadavg(load, 3) == 3)
115 load_submit(load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
117 WARNING("load: getloadavg failed: %s", STRERRNO);
119 /* #endif HAVE_GETLOADAVG */
121 #elif defined(KERNEL_LINUX)
122 gauge_t snum, mnum, lnum;
129 if ((loadavg = fopen("/proc/loadavg", "r")) == NULL) {
130 WARNING("load: fopen: %s", STRERRNO);
134 if (fgets(buffer, 16, loadavg) == NULL) {
135 WARNING("load: fgets: %s", STRERRNO);
140 if (fclose(loadavg)) {
141 WARNING("load: fclose: %s", STRERRNO);
144 numfields = strsplit(buffer, fields, 8);
149 snum = atof(fields[0]);
150 mnum = atof(fields[1]);
151 lnum = atof(fields[2]);
153 load_submit(snum, mnum, lnum);
154 /* #endif KERNEL_LINUX */
156 #elif HAVE_LIBSTATGRAB
157 gauge_t snum, mnum, lnum;
160 if ((ls = sg_get_load_stats()) == NULL)
166 load_submit(snum, mnum, lnum);
167 /* #endif HAVE_LIBSTATGRAB */
170 gauge_t snum, mnum, lnum;
171 perfstat_cpu_total_t cputotal;
173 if (perfstat_cpu_total(NULL, &cputotal, sizeof(perfstat_cpu_total_t), 1) <
175 WARNING("load: perfstat_cpu : %s", STRERRNO);
179 snum = (float)cputotal.loadavg[0] / (float)(1 << SBITS);
180 mnum = (float)cputotal.loadavg[1] / (float)(1 << SBITS);
181 lnum = (float)cputotal.loadavg[2] / (float)(1 << SBITS);
182 load_submit(snum, mnum, lnum);
183 /* #endif HAVE_PERFSTAT */
186 #error "No applicable input method."
192 void module_register(void) {
193 plugin_register_config("load", load_config, config_keys, config_keys_num);
194 plugin_register_read("load", load_read);
195 } /* void module_register */