3 * Copyright (C) 2005-2010 Florian octo Forster
4 * Copyright (C) 2008 Oleg King
5 * Copyright (C) 2009 Simon Kuhnle
6 * Copyright (C) 2009 Manuel Sanmartin
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; only version 2 of the License is applicable.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * Florian octo Forster <octo at verplant.org>
23 * Oleg King <king2 at kaluga.ru>
24 * Simon Kuhnle <simon at blarzwurst.de>
32 #ifdef HAVE_MACH_KERN_RETURN_H
33 # include <mach/kern_return.h>
35 #ifdef HAVE_MACH_MACH_INIT_H
36 # include <mach/mach_init.h>
38 #ifdef HAVE_MACH_HOST_PRIV_H
39 # include <mach/host_priv.h>
41 #if HAVE_MACH_MACH_ERROR_H
42 # include <mach/mach_error.h>
44 #ifdef HAVE_MACH_PROCESSOR_INFO_H
45 # include <mach/processor_info.h>
47 #ifdef HAVE_MACH_PROCESSOR_H
48 # include <mach/processor.h>
50 #ifdef HAVE_MACH_VM_MAP_H
51 # include <mach/vm_map.h>
55 # include <sys/sysinfo.h>
56 #endif /* HAVE_LIBKSTAT */
58 #if (defined(HAVE_SYSCTL) && HAVE_SYSCTL) \
59 || (defined(HAVE_SYSCTLBYNAME) && HAVE_SYSCTLBYNAME)
60 # ifdef HAVE_SYS_SYSCTL_H
61 # include <sys/sysctl.h>
64 # ifdef HAVE_SYS_DKSTAT_H
65 # include <sys/dkstat.h>
68 # if !defined(CP_USER) || !defined(CP_NICE) || !defined(CP_SYS) || !defined(CP_INTR) || !defined(CP_IDLE) || !defined(CPUSTATES)
76 #endif /* HAVE_SYSCTL || HAVE_SYSCTLBYNAME */
79 # if defined(CTL_HW) && defined(HW_NCPU) \
80 && defined(CTL_KERN) && defined(KERN_CPTIME) && defined(CPUSTATES)
81 # define CAN_USE_SYSCTL 1
83 # define CAN_USE_SYSCTL 0
86 # define CAN_USE_SYSCTL 0
90 # include <statgrab.h>
94 # include <sys/protosw.h>
95 # include <libperfstat.h>
96 # endif /* HAVE_PERFSTAT */
98 #if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT \
99 && !CAN_USE_SYSCTL && !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
100 # error "No applicable input method."
103 #ifdef PROCESSOR_CPU_LOAD_INFO
104 static mach_port_t port_host;
105 static processor_port_array_t cpu_list;
106 static mach_msg_type_number_t cpu_list_len;
107 /* #endif PROCESSOR_CPU_LOAD_INFO */
109 #elif defined(KERNEL_LINUX)
110 /* no variables needed */
111 /* #endif KERNEL_LINUX */
113 #elif defined(HAVE_LIBKSTAT)
114 /* colleague tells me that Sun doesn't sell systems with more than 100 or so CPUs.. */
115 # define MAX_NUMCPU 256
116 extern kstat_ctl_t *kc;
117 static kstat_t *ksp[MAX_NUMCPU];
119 /* #endif HAVE_LIBKSTAT */
123 /* #endif CAN_USE_SYSCTL */
125 #elif defined(HAVE_SYSCTLBYNAME)
127 # ifdef HAVE_SYSCTL_KERN_CP_TIMES
129 # endif /* HAVE_SYSCTL_KERN_CP_TIMES */
130 /* #endif HAVE_SYSCTLBYNAME */
132 #elif defined(HAVE_LIBSTATGRAB)
133 /* no variables needed */
134 /* #endif HAVE_LIBSTATGRAB */
136 #elif defined(HAVE_PERFSTAT)
137 static perfstat_cpu_t *perfcpu;
140 #endif /* HAVE_PERFSTAT */
142 static int init (void)
144 #if PROCESSOR_CPU_LOAD_INFO
145 kern_return_t status;
147 port_host = mach_host_self ();
149 /* FIXME: Free `cpu_list' if it's not NULL */
150 if ((status = host_processors (port_host, &cpu_list, &cpu_list_len)) != KERN_SUCCESS)
152 ERROR ("cpu plugin: host_processors returned %i", (int) status);
157 DEBUG ("host_processors returned %i %s", (int) cpu_list_len, cpu_list_len == 1 ? "processor" : "processors");
158 INFO ("cpu plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
159 /* #endif PROCESSOR_CPU_LOAD_INFO */
161 #elif defined(HAVE_LIBKSTAT)
169 /* Solaris doesn't count linear.. *sigh* */
170 for (numcpu = 0, ksp_chain = kc->kc_chain;
171 (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
172 ksp_chain = ksp_chain->ks_next)
173 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
174 ksp[numcpu++] = ksp_chain;
175 /* #endif HAVE_LIBKSTAT */
179 int mib[2] = {CTL_HW, HW_NCPU};
183 numcpu_size = sizeof (numcpu);
185 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
186 &numcpu, &numcpu_size, NULL, 0);
190 WARNING ("cpu plugin: sysctl: %s",
191 sstrerror (errno, errbuf, sizeof (errbuf)));
194 /* #endif CAN_USE_SYSCTL */
196 #elif defined (HAVE_SYSCTLBYNAME)
199 numcpu_size = sizeof (numcpu);
201 if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
204 WARNING ("cpu plugin: sysctlbyname(hw.ncpu): %s",
205 sstrerror (errno, errbuf, sizeof (errbuf)));
209 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
210 numcpu_size = sizeof (maxcpu);
212 if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0)
215 WARNING ("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s",
216 sstrerror (errno, errbuf, sizeof (errbuf)));
221 NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
223 /* #endif HAVE_SYSCTLBYNAME */
225 #elif defined(HAVE_LIBSTATGRAB)
226 /* nothing to initialize */
227 /* #endif HAVE_LIBSTATGRAB */
229 #elif defined(HAVE_PERFSTAT)
230 /* nothing to initialize */
231 #endif /* HAVE_PERFSTAT */
236 static void submit (int cpu_num, const char *type_instance, derive_t value)
239 value_list_t vl = VALUE_LIST_INIT;
241 values[0].derive = value;
245 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
246 sstrncpy (vl.plugin, "cpu", sizeof (vl.plugin));
247 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
249 sstrncpy (vl.type, "cpu", sizeof (vl.type));
250 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
252 plugin_dispatch_values (&vl);
255 static int cpu_read (void)
257 #if PROCESSOR_CPU_LOAD_INFO
260 kern_return_t status;
262 processor_cpu_load_info_data_t cpu_info;
263 mach_msg_type_number_t cpu_info_len;
267 for (cpu = 0; cpu < cpu_list_len; cpu++)
270 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
272 status = processor_info (cpu_list[cpu], PROCESSOR_CPU_LOAD_INFO, &cpu_host,
273 (processor_info_t) &cpu_info, &cpu_info_len);
274 if (status != KERN_SUCCESS)
276 ERROR ("cpu plugin: processor_info (PROCESSOR_CPU_LOAD_INFO) failed: %s",
277 mach_error_string (status));
281 if (cpu_info_len < CPU_STATE_MAX)
283 ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
287 submit (cpu, "user", (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER]);
288 submit (cpu, "nice", (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE]);
289 submit (cpu, "system", (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM]);
290 submit (cpu, "idle", (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE]);
292 /* #endif PROCESSOR_CPU_LOAD_INFO */
294 #elif defined(KERNEL_LINUX)
296 derive_t user, nice, syst, idle;
297 derive_t wait, intr, sitr; /* sitr == soft interrupt */
304 if ((fh = fopen ("/proc/stat", "r")) == NULL)
307 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
308 sstrerror (errno, errbuf, sizeof (errbuf)));
312 while (fgets (buf, 1024, fh) != NULL)
314 if (strncmp (buf, "cpu", 3))
316 if ((buf[3] < '0') || (buf[3] > '9'))
319 numfields = strsplit (buf, fields, 9);
323 cpu = atoi (fields[0] + 3);
324 user = atoll (fields[1]);
325 nice = atoll (fields[2]);
326 syst = atoll (fields[3]);
327 idle = atoll (fields[4]);
329 submit (cpu, "user", user);
330 submit (cpu, "nice", nice);
331 submit (cpu, "system", syst);
332 submit (cpu, "idle", idle);
336 wait = atoll (fields[5]);
337 intr = atoll (fields[6]);
338 sitr = atoll (fields[7]);
340 submit (cpu, "wait", wait);
341 submit (cpu, "interrupt", intr);
342 submit (cpu, "softirq", sitr);
345 submit (cpu, "steal", atoll (fields[8]));
350 /* #endif defined(KERNEL_LINUX) */
352 #elif defined(HAVE_LIBKSTAT)
354 derive_t user, syst, idle, wait;
355 static cpu_stat_t cs;
360 for (cpu = 0; cpu < numcpu; cpu++)
362 if (kstat_read (kc, ksp[cpu], &cs) == -1)
363 continue; /* error message? */
365 idle = (derive_t) cs.cpu_sysinfo.cpu[CPU_IDLE];
366 user = (derive_t) cs.cpu_sysinfo.cpu[CPU_USER];
367 syst = (derive_t) cs.cpu_sysinfo.cpu[CPU_KERNEL];
368 wait = (derive_t) cs.cpu_sysinfo.cpu[CPU_WAIT];
370 submit (ksp[cpu]->ks_instance, "user", user);
371 submit (ksp[cpu]->ks_instance, "system", syst);
372 submit (ksp[cpu]->ks_instance, "idle", idle);
373 submit (ksp[cpu]->ks_instance, "wait", wait);
375 /* #endif defined(HAVE_LIBKSTAT) */
378 uint64_t cpuinfo[numcpu][CPUSTATES];
385 ERROR ("cpu plugin: Could not determine number of "
386 "installed CPUs using sysctl(3).");
390 memset (cpuinfo, 0, sizeof (cpuinfo));
392 #if defined(KERN_CPTIME2)
394 for (i = 0; i < numcpu; i++) {
395 int mib[] = {CTL_KERN, KERN_CPTIME2, i};
397 cpuinfo_size = sizeof (cpuinfo[0]);
399 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
400 cpuinfo[i], &cpuinfo_size, NULL, 0);
403 ERROR ("cpu plugin: sysctl failed: %s.",
404 sstrerror (errno, errbuf, sizeof (errbuf)));
410 #endif /* defined(KERN_CPTIME2) */
412 int mib[] = {CTL_KERN, KERN_CPTIME};
413 long cpuinfo_tmp[CPUSTATES];
415 cpuinfo_size = sizeof(cpuinfo_tmp);
417 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
418 &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
422 ERROR ("cpu plugin: sysctl failed: %s.",
423 sstrerror (errno, errbuf, sizeof (errbuf)));
427 for(i = 0; i < CPUSTATES; i++) {
428 cpuinfo[0][i] = cpuinfo_tmp[i];
432 for (i = 0; i < numcpu; i++) {
433 submit (i, "user", cpuinfo[i][CP_USER]);
434 submit (i, "nice", cpuinfo[i][CP_NICE]);
435 submit (i, "system", cpuinfo[i][CP_SYS]);
436 submit (i, "idle", cpuinfo[i][CP_IDLE]);
437 submit (i, "interrupt", cpuinfo[i][CP_INTR]);
439 /* #endif CAN_USE_SYSCTL */
440 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES)
441 long cpuinfo[maxcpu][CPUSTATES];
445 memset (cpuinfo, 0, sizeof (cpuinfo));
447 cpuinfo_size = sizeof (cpuinfo);
448 if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
451 ERROR ("cpu plugin: sysctlbyname failed: %s.",
452 sstrerror (errno, errbuf, sizeof (errbuf)));
456 for (i = 0; i < numcpu; i++) {
457 submit (i, "user", cpuinfo[i][CP_USER]);
458 submit (i, "nice", cpuinfo[i][CP_NICE]);
459 submit (i, "system", cpuinfo[i][CP_SYS]);
460 submit (i, "idle", cpuinfo[i][CP_IDLE]);
461 submit (i, "interrupt", cpuinfo[i][CP_INTR]);
463 /* #endif HAVE_SYSCTL_KERN_CP_TIMES */
464 #elif defined(HAVE_SYSCTLBYNAME)
465 long cpuinfo[CPUSTATES];
468 cpuinfo_size = sizeof (cpuinfo);
470 if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
473 ERROR ("cpu plugin: sysctlbyname failed: %s.",
474 sstrerror (errno, errbuf, sizeof (errbuf)));
478 submit (0, "user", cpuinfo[CP_USER]);
479 submit (0, "nice", cpuinfo[CP_NICE]);
480 submit (0, "system", cpuinfo[CP_SYS]);
481 submit (0, "idle", cpuinfo[CP_IDLE]);
482 submit (0, "interrupt", cpuinfo[CP_INTR]);
483 /* #endif HAVE_SYSCTLBYNAME */
485 #elif defined(HAVE_LIBSTATGRAB)
487 cs = sg_get_cpu_stats ();
491 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
495 submit (0, "idle", (derive_t) cs->idle);
496 submit (0, "nice", (derive_t) cs->nice);
497 submit (0, "swap", (derive_t) cs->swap);
498 submit (0, "system", (derive_t) cs->kernel);
499 submit (0, "user", (derive_t) cs->user);
500 submit (0, "wait", (derive_t) cs->iowait);
501 /* #endif HAVE_LIBSTATGRAB */
503 #elif defined(HAVE_PERFSTAT)
507 numcpu = perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
511 WARNING ("cpu plugin: perfstat_cpu: %s",
512 sstrerror (errno, errbuf, sizeof (errbuf)));
516 if (pnumcpu != numcpu || perfcpu == NULL)
520 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
525 if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
528 WARNING ("cpu plugin: perfstat_cpu: %s",
529 sstrerror (errno, errbuf, sizeof (errbuf)));
533 for (i = 0; i < cpus; i++)
535 submit (i, "idle", (derive_t) perfcpu[i].idle);
536 submit (i, "system", (derive_t) perfcpu[i].sys);
537 submit (i, "user", (derive_t) perfcpu[i].user);
538 submit (i, "wait", (derive_t) perfcpu[i].wait);
540 #endif /* HAVE_PERFSTAT */
545 void module_register (void)
547 plugin_register_init ("cpu", init);
548 plugin_register_read ("cpu", cpu_read);
549 } /* void module_register */