2 * collectd - src/load.c
3 * Copyright (C) 2005,2006 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at verplant.org>
26 #define MODULE_NAME "load"
28 #if defined(HAVE_GETLOADAVG) || defined(KERNEL_LINUX) || defined(HAVE_LIBSTATGRAB)
29 # define LOAD_HAVE_READ 1
31 # define LOAD_HAVE_READ 0
34 #ifdef HAVE_SYS_LOADAVG_H
35 #include <sys/loadavg.h>
38 #ifdef HAVE_GETLOADAVG
39 #if !defined(LOADAVG_1MIN) || !defined(LOADAVG_5MIN) || !defined(LOADAVG_15MIN)
40 #define LOADAVG_1MIN 0
41 #define LOADAVG_5MIN 1
42 #define LOADAVG_15MIN 2
44 #endif /* defined(HAVE_GETLOADAVG) */
46 static data_source_t dsrc[3] =
48 {"shortterm", DS_TYPE_GAUGE, 0.0, 100.0},
49 {"midterm", DS_TYPE_GAUGE, 0.0, 100.0},
50 {"longterm", DS_TYPE_GAUGE, 0.0, 100.0}
53 static data_set_t ds =
59 static void load_submit (gauge_t snum, gauge_t mnum, gauge_t lnum)
62 value_list_t vl = VALUE_LIST_INIT;
64 values[0].gauge = snum;
65 values[1].gauge = mnum;
66 values[2].gauge = lnum;
69 vl.values_len = STATIC_ARRAY_SIZE (values);
70 vl.time = time (NULL);
71 strcpy (vl.host, hostname_g);
72 strcpy (vl.plugin, "load");
74 plugin_dispatch_values ("load", &vl);
77 static int load_read (void)
79 #if defined(HAVE_GETLOADAVG)
82 if (getloadavg (load, 3) == 3)
83 load_submit (load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
87 WARNING ("load: getloadavg failed: %s",
88 sstrerror (errno, errbuf, sizeof (errbuf)));
90 /* #endif HAVE_GETLOADAVG */
92 #elif defined(KERNEL_LINUX)
93 gauge_t snum, mnum, lnum;
100 if ((loadavg = fopen ("/proc/loadavg", "r")) == NULL)
103 WARNING ("load: fopen: %s",
104 sstrerror (errno, errbuf, sizeof (errbuf)));
108 if (fgets (buffer, 16, loadavg) == NULL)
111 WARNING ("load: fgets: %s",
112 sstrerror (errno, errbuf, sizeof (errbuf)));
117 if (fclose (loadavg))
120 WARNING ("load: fclose: %s",
121 sstrerror (errno, errbuf, sizeof (errbuf)));
124 numfields = strsplit (buffer, fields, 8);
129 snum = atof (fields[0]);
130 mnum = atof (fields[1]);
131 lnum = atof (fields[2]);
133 load_submit (snum, mnum, lnum);
134 /* #endif KERNEL_LINUX */
136 #elif defined(HAVE_LIBSTATGRAB)
137 gauge_t snum, mnum, lnum;
140 if ((ls = sg_get_load_stats ()) == NULL)
147 load_submit (snum, mnum, lnum);
148 #endif /* HAVE_LIBSTATGRAB */
152 #endif /* LOAD_HAVE_READ */
154 void module_register (void)
156 plugin_register_data_set (&ds);
158 plugin_register_read ("load", load_read);