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; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
26 #include "utils_debug.h"
28 #define MODULE_NAME "cpu"
30 #ifdef HAVE_MACH_KERN_RETURN_H
31 # include <mach/kern_return.h>
33 #ifdef HAVE_MACH_MACH_INIT_H
34 # include <mach/mach_init.h>
36 #ifdef HAVE_MACH_HOST_PRIV_H
37 # include <mach/host_priv.h>
39 #if HAVE_MACH_MACH_ERROR_H
40 # include <mach/mach_error.h>
42 #ifdef HAVE_MACH_PROCESSOR_INFO_H
43 # include <mach/processor_info.h>
45 #ifdef HAVE_MACH_PROCESSOR_H
46 # include <mach/processor.h>
48 #ifdef HAVE_MACH_VM_MAP_H
49 # include <mach/vm_map.h>
53 # include <sys/sysinfo.h>
54 #endif /* HAVE_LIBKSTAT */
56 #ifdef HAVE_SYSCTLBYNAME
57 # ifdef HAVE_SYS_SYSCTL_H
58 # include <sys/sysctl.h>
61 # ifdef HAVE_SYS_DKSTAT_H
62 # include <sys/dkstat.h>
65 # if !defined(CP_USER) || !defined(CP_NICE) || !defined(CP_SYS) || !defined(CP_INTR) || !defined(CP_IDLE) || !defined(CPUSTATES)
73 #endif /* HAVE_SYSCTLBYNAME */
75 #if defined(PROCESSOR_CPU_LOAD_INFO) || defined(KERNEL_LINUX) || defined(HAVE_LIBKSTAT) || defined(HAVE_SYSCTLBYNAME)
76 # define CPU_HAVE_READ 1
78 # define CPU_HAVE_READ 0
81 #ifdef PROCESSOR_CPU_LOAD_INFO
82 static mach_port_t port_host;
83 static processor_port_array_t cpu_list;
84 static mach_msg_type_number_t cpu_list_len;
85 /* #endif PROCESSOR_CPU_LOAD_INFO */
87 #elif defined(KERNEL_LINUX)
88 /* no variables needed */
89 /* #endif KERNEL_LINUX */
91 #elif defined(HAVE_LIBKSTAT)
92 /* colleague tells me that Sun doesn't sell systems with more than 100 or so CPUs.. */
93 # define MAX_NUMCPU 256
94 extern kstat_ctl_t *kc;
95 static kstat_t *ksp[MAX_NUMCPU];
97 /* #endif HAVE_LIBKSTAT */
99 #elif defined(HAVE_SYSCTLBYNAME)
101 #endif /* HAVE_SYSCTLBYNAME */
103 static char *cpu_filename = "cpu-%s.rrd";
105 static char *ds_def[] =
107 "DS:user:COUNTER:"COLLECTD_HEARTBEAT":0:U",
108 "DS:nice:COUNTER:"COLLECTD_HEARTBEAT":0:U",
109 "DS:syst:COUNTER:"COLLECTD_HEARTBEAT":0:U",
110 "DS:idle:COUNTER:"COLLECTD_HEARTBEAT":0:U",
111 "DS:wait:COUNTER:"COLLECTD_HEARTBEAT":0:U",
114 static int ds_num = 5;
116 static void cpu_init (void)
118 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
119 kern_return_t status;
121 port_host = mach_host_self ();
123 /* FIXME: Free `cpu_list' if it's not NULL */
124 if ((status = host_processors (port_host, &cpu_list, &cpu_list_len)) != KERN_SUCCESS)
126 syslog (LOG_ERR, "cpu-plugin: host_processors returned %i\n", (int) status);
131 DBG ("host_processors returned %i %s", (int) cpu_list_len, cpu_list_len == 1 ? "processor" : "processors");
132 syslog (LOG_INFO, "cpu-plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
133 /* #endif PROCESSOR_CPU_LOAD_INFO */
135 #elif defined(HAVE_LIBKSTAT)
143 /* Solaris doesn't count linear.. *sigh* */
144 for (numcpu = 0, ksp_chain = kc->kc_chain;
145 (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
146 ksp_chain = ksp_chain->ks_next)
147 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
148 ksp[numcpu++] = ksp_chain;
149 /* #endif HAVE_LIBKSTAT */
151 #elif defined (HAVE_SYSCTLBYNAME)
154 numcpu_size = sizeof (numcpu);
156 if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
158 syslog (LOG_WARNING, "cpu: sysctlbyname: %s", strerror (errno));
163 syslog (LOG_NOTICE, "cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
169 static void cpu_write (char *host, char *inst, char *val)
174 status = snprintf (file, 512, cpu_filename, inst);
177 else if (status >= 512)
180 rrd_update_file (host, file, val, ds_def, ds_num);
185 static void cpu_submit (int cpu_num, unsigned long long user,
186 unsigned long long nice, unsigned long long syst,
187 unsigned long long idle, unsigned long long wait)
192 if (snprintf (buf, BUFSIZE, "%u:%llu:%llu:%llu:%llu:%llu", (unsigned int) curtime,
193 user, nice, syst, idle, wait) >= BUFSIZE)
195 snprintf (cpu, 16, "%i", cpu_num);
197 plugin_submit (MODULE_NAME, cpu, buf);
201 static void cpu_read (void)
203 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
206 kern_return_t status;
208 #if PROCESSOR_CPU_LOAD_INFO
209 processor_cpu_load_info_data_t cpu_info;
210 mach_msg_type_number_t cpu_info_len;
212 #if PROCESSOR_TEMPERATURE
213 processor_info_data_t cpu_temp;
214 mach_msg_type_number_t cpu_temp_len;
219 for (cpu = 0; cpu < cpu_list_len; cpu++)
221 #if PROCESSOR_CPU_LOAD_INFO
223 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
225 if ((status = processor_info (cpu_list[cpu],
226 PROCESSOR_CPU_LOAD_INFO, &cpu_host,
227 (processor_info_t) &cpu_info, &cpu_info_len)) != KERN_SUCCESS)
229 syslog (LOG_ERR, "processor_info failed with status %i\n", (int) status);
233 if (cpu_info_len < CPU_STATE_MAX)
235 syslog (LOG_ERR, "processor_info returned only %i elements..\n", cpu_info_len);
239 cpu_submit (cpu, cpu_info.cpu_ticks[CPU_STATE_USER],
240 cpu_info.cpu_ticks[CPU_STATE_NICE],
241 cpu_info.cpu_ticks[CPU_STATE_SYSTEM],
242 cpu_info.cpu_ticks[CPU_STATE_IDLE],
244 #endif /* PROCESSOR_CPU_LOAD_INFO */
245 #if PROCESSOR_TEMPERATURE
246 cpu_temp_len = PROCESSOR_INFO_MAX;
248 status = processor_info (cpu_list[cpu],
249 PROCESSOR_TEMPERATURE,
251 cpu_temp, &cpu_temp_len);
252 if (status != KERN_SUCCESS)
254 syslog (LOG_ERR, "processor_info failed: %s",
255 mach_error_string (status));
259 if (cpu_temp_len != 1)
261 DBG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
266 DBG ("cpu_temp = %i", (int) cpu_temp);
267 #endif /* PROCESSOR_TEMPERATURE */
269 /* #endif PROCESSOR_CPU_LOAD_INFO */
271 #elif defined(KERNEL_LINUX)
272 # define BUFSIZE 1024
274 unsigned long long user, nice, syst, idle;
275 unsigned long long wait, intr, sitr; /* sitr == soft interrupt */
282 if ((fh = fopen ("/proc/stat", "r")) == NULL)
284 syslog (LOG_WARNING, "cpu: fopen: %s", strerror (errno));
288 while (fgets (buf, BUFSIZE, fh) != NULL)
290 if (strncmp (buf, "cpu", 3))
292 if ((buf[3] < '0') || (buf[3] > '9'))
295 numfields = strsplit (buf, fields, 9);
299 cpu = atoi (fields[0] + 3);
300 user = atoll (fields[1]);
301 nice = atoll (fields[2]);
302 syst = atoll (fields[3]);
303 idle = atoll (fields[4]);
307 wait = atoll (fields[5]);
308 intr = atoll (fields[6]);
309 sitr = atoll (fields[7]);
311 /* I doubt anyone cares about the time spent in
312 * interrupt handlers.. */
320 cpu_submit (cpu, user, nice, syst, idle, wait);
325 /* #endif defined(KERNEL_LINUX) */
327 #elif defined(HAVE_LIBKSTAT)
329 unsigned long long user, syst, idle, wait;
330 static cpu_stat_t cs;
335 for (cpu = 0; cpu < numcpu; cpu++)
337 if (kstat_read (kc, ksp[cpu], &cs) == -1)
338 continue; /* error message? */
340 idle = (unsigned long long) cs.cpu_sysinfo.cpu[CPU_IDLE];
341 user = (unsigned long long) cs.cpu_sysinfo.cpu[CPU_USER];
342 syst = (unsigned long long) cs.cpu_sysinfo.cpu[CPU_KERNEL];
343 wait = (unsigned long long) cs.cpu_sysinfo.cpu[CPU_WAIT];
345 cpu_submit (ksp[cpu]->ks_instance,
346 user, 0LL, syst, idle, wait);
348 /* #endif defined(HAVE_LIBKSTAT) */
350 #elif defined(HAVE_SYSCTLBYNAME)
351 long cpuinfo[CPUSTATES];
354 cpuinfo_size = sizeof (cpuinfo);
356 if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
358 syslog (LOG_WARNING, "cpu: sysctlbyname: %s", strerror (errno));
362 cpuinfo[CP_SYS] += cpuinfo[CP_INTR];
364 /* FIXME: Instance is always `0' */
365 cpu_submit (0, cpuinfo[CP_USER], cpuinfo[CP_NICE], cpuinfo[CP_SYS], cpuinfo[CP_IDLE], 0LL);
371 # define cpu_read NULL
372 #endif /* CPU_HAVE_READ */
374 void module_register (void)
376 plugin_register (MODULE_NAME, cpu_init, cpu_read, cpu_write);