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
36 #ifdef HAVE_SYS_LOADAVG_H
37 #include <sys/loadavg.h>
41 # include <statgrab.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 <sys/proc.h> /* AIX 5 */
54 # include <sys/protosw.h>
55 # include <libperfstat.h>
56 #endif /* HAVE_PERFSTAT */
58 static _Bool report_relative_load = 0;
60 static const char *config_keys[] =
64 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
66 static int load_config (const char *key, const char *value)
68 if (strcasecmp (key, "ReportRelative") == 0)
69 #ifdef _SC_NPROCESSORS_ONLN
70 report_relative_load = IS_TRUE (value) ? 1 : 0;
72 WARNING ("load plugin: The \"ReportRelative\" configuration "
73 "is not available, because I can't determine the "
74 "number of CPUS on this system. Sorry.");
79 static void load_submit (gauge_t snum, gauge_t mnum, gauge_t lnum)
84 #ifdef _SC_NPROCESSORS_ONLN
85 if (report_relative_load) {
86 if ((cores = sysconf(_SC_NPROCESSORS_ONLN)) < 1) {
87 WARNING ("load: sysconf failed : %s",
88 sstrerror (errno, errbuf, sizeof (errbuf)));
98 value_list_t vl = VALUE_LIST_INIT;
106 vl.values_len = STATIC_ARRAY_SIZE (values);
108 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
109 sstrncpy (vl.plugin, "load", sizeof (vl.plugin));
110 sstrncpy (vl.type, "load", sizeof (vl.type));
113 sstrncpy(vl.type_instance, "relative",
114 sizeof (vl.type_instance));
117 plugin_dispatch_values (&vl);
120 static int load_read (void)
122 #if defined(HAVE_GETLOADAVG)
125 if (getloadavg (load, 3) == 3)
126 load_submit (load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
130 WARNING ("load: getloadavg failed: %s",
131 sstrerror (errno, errbuf, sizeof (errbuf)));
133 /* #endif HAVE_GETLOADAVG */
135 #elif defined(KERNEL_LINUX)
136 gauge_t snum, mnum, lnum;
143 if ((loadavg = fopen ("/proc/loadavg", "r")) == NULL)
146 WARNING ("load: fopen: %s",
147 sstrerror (errno, errbuf, sizeof (errbuf)));
151 if (fgets (buffer, 16, loadavg) == NULL)
154 WARNING ("load: fgets: %s",
155 sstrerror (errno, errbuf, sizeof (errbuf)));
160 if (fclose (loadavg))
163 WARNING ("load: fclose: %s",
164 sstrerror (errno, errbuf, sizeof (errbuf)));
167 numfields = strsplit (buffer, fields, 8);
172 snum = atof (fields[0]);
173 mnum = atof (fields[1]);
174 lnum = atof (fields[2]);
176 load_submit(snum, mnum, lnum);
177 /* #endif KERNEL_LINUX */
179 #elif HAVE_LIBSTATGRAB
180 gauge_t snum, mnum, lnum;
183 if ((ls = sg_get_load_stats ()) == NULL)
189 load_submit(snum, mnum, lnum);
190 /* #endif HAVE_LIBSTATGRAB */
193 gauge_t snum, mnum, lnum;
194 perfstat_cpu_total_t cputotal;
196 if (perfstat_cpu_total(NULL, &cputotal, sizeof(perfstat_cpu_total_t), 1) < 0)
199 WARNING ("load: perfstat_cpu : %s",
200 sstrerror (errno, errbuf, sizeof (errbuf)));
204 snum = (float)cputotal.loadavg[0]/(float)(1<<SBITS);
205 mnum = (float)cputotal.loadavg[1]/(float)(1<<SBITS);
206 lnum = (float)cputotal.loadavg[2]/(float)(1<<SBITS);
207 load_submit(snum, mnum, lnum);
208 /* #endif HAVE_PERFSTAT */
211 # error "No applicable input method."
217 void module_register (void)
219 plugin_register_config ("load", load_config, config_keys, config_keys_num);
220 plugin_register_read ("load", load_read);
221 } /* void module_register */