1 /**
2 * collectd - src/cpu.c
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
7 *
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.
11 *
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.
16 *
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
20 *
21 * Authors:
22 * Florian octo Forster <octo at collectd.org>
23 * Oleg King <king2 at kaluga.ru>
24 * Simon Kuhnle <simon at blarzwurst.de>
25 * Manuel Sanmartin
26 **/
28 #include "collectd.h"
29 #include "common.h"
30 #include "plugin.h"
32 #ifdef HAVE_MACH_KERN_RETURN_H
33 # include <mach/kern_return.h>
34 #endif
35 #ifdef HAVE_MACH_MACH_INIT_H
36 # include <mach/mach_init.h>
37 #endif
38 #ifdef HAVE_MACH_HOST_PRIV_H
39 # include <mach/host_priv.h>
40 #endif
41 #if HAVE_MACH_MACH_ERROR_H
42 # include <mach/mach_error.h>
43 #endif
44 #ifdef HAVE_MACH_PROCESSOR_INFO_H
45 # include <mach/processor_info.h>
46 #endif
47 #ifdef HAVE_MACH_PROCESSOR_H
48 # include <mach/processor.h>
49 #endif
50 #ifdef HAVE_MACH_VM_MAP_H
51 # include <mach/vm_map.h>
52 #endif
54 #ifdef HAVE_LIBKSTAT
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>
62 # endif
64 # ifdef HAVE_SYS_DKSTAT_H
65 # include <sys/dkstat.h>
66 # endif
68 # if !defined(CP_USER) || !defined(CP_NICE) || !defined(CP_SYS) || !defined(CP_INTR) || !defined(CP_IDLE) || !defined(CPUSTATES)
69 # define CP_USER 0
70 # define CP_NICE 1
71 # define CP_SYS 2
72 # define CP_INTR 3
73 # define CP_IDLE 4
74 # define CPUSTATES 5
75 # endif
76 #endif /* HAVE_SYSCTL || HAVE_SYSCTLBYNAME */
78 #if HAVE_SYSCTL
79 # if defined(CTL_HW) && defined(HW_NCPU) \
80 && defined(CTL_KERN) && defined(KERN_CPTIME) && defined(CPUSTATES)
81 # define CAN_USE_SYSCTL 1
82 # else
83 # define CAN_USE_SYSCTL 0
84 # endif
85 #else
86 # define CAN_USE_SYSCTL 0
87 #endif
89 #define CPU_SUBMIT_USER 0
90 #define CPU_SUBMIT_SYSTEM 1
91 #define CPU_SUBMIT_WAIT 2
92 #define CPU_SUBMIT_NICE 3
93 #define CPU_SUBMIT_SWAP 4
94 #define CPU_SUBMIT_INTERRUPT 5
95 #define CPU_SUBMIT_SOFTIRQ 6
96 #define CPU_SUBMIT_STEAL 7
97 #define CPU_SUBMIT_IDLE 8
98 #define CPU_SUBMIT_ACTIVE 9
99 #define CPU_SUBMIT_MAX 10
101 #if HAVE_STATGRAB_H
102 # include <statgrab.h>
103 #endif
105 # ifdef HAVE_PERFSTAT
106 # include <sys/protosw.h>
107 # include <libperfstat.h>
108 # endif /* HAVE_PERFSTAT */
110 #if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT \
111 && !CAN_USE_SYSCTL && !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
112 # error "No applicable input method."
113 #endif
115 static const char *cpu_state_names[] = {
116 "user",
117 "system",
118 "wait",
119 "nice",
120 "swap",
121 "interrupt",
122 "softirq",
123 "steal",
124 "idle",
125 "active"
126 };
128 #ifdef PROCESSOR_CPU_LOAD_INFO
129 static mach_port_t port_host;
130 static processor_port_array_t cpu_list;
131 static mach_msg_type_number_t cpu_list_len;
133 #if PROCESSOR_TEMPERATURE
134 static int cpu_temp_retry_counter = 0;
135 static int cpu_temp_retry_step = 1;
136 static int cpu_temp_retry_max = 1;
137 #endif /* PROCESSOR_TEMPERATURE */
138 /* #endif PROCESSOR_CPU_LOAD_INFO */
140 #elif defined(KERNEL_LINUX)
141 /* no variables needed */
142 /* #endif KERNEL_LINUX */
144 #elif defined(HAVE_LIBKSTAT)
145 /* colleague tells me that Sun doesn't sell systems with more than 100 or so CPUs.. */
146 # define MAX_NUMCPU 256
147 extern kstat_ctl_t *kc;
148 static kstat_t *ksp[MAX_NUMCPU];
149 static int numcpu;
150 /* #endif HAVE_LIBKSTAT */
152 #elif CAN_USE_SYSCTL
153 static int numcpu;
154 /* #endif CAN_USE_SYSCTL */
156 #elif defined(HAVE_SYSCTLBYNAME)
157 static int numcpu;
158 # ifdef HAVE_SYSCTL_KERN_CP_TIMES
159 static int maxcpu;
160 # endif /* HAVE_SYSCTL_KERN_CP_TIMES */
161 /* #endif HAVE_SYSCTLBYNAME */
163 #elif defined(HAVE_LIBSTATGRAB)
164 /* no variables needed */
165 /* #endif HAVE_LIBSTATGRAB */
167 #elif defined(HAVE_PERFSTAT)
168 static perfstat_cpu_t *perfcpu;
169 static int numcpu;
170 static int pnumcpu;
171 #endif /* HAVE_PERFSTAT */
173 static value_to_rate_state_t *values = NULL;
174 static gauge_t agg_values[CPU_SUBMIT_MAX] = {
175 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
177 };
178 static int cpu_cells = 0;
179 static int cpu_count = 0;
182 static _Bool report_by_cpu = 1;
183 static _Bool report_percent = 0;
184 static _Bool report_active = 0;
186 static const char *config_keys[] =
187 {
188 "ReportByCpu",
189 "ReportActive",
190 "ValuesPercentage"
191 };
192 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
195 static int cpu_config (const char *key, const char *value)
196 {
197 if (strcasecmp (key, "ReportByCpu") == 0) {
198 report_by_cpu = IS_TRUE (value) ? 1 : 0;
199 }
200 if (strcasecmp (key, "ValuesPercentage") == 0) {
201 report_percent = IS_TRUE (value) ? 1 : 0;
202 }
203 if (strcasecmp (key, "ReportActive") == 0)
204 report_active = IS_TRUE (value) ? 1 : 0;
205 return (-1);
206 }
208 static int cpu_states_grow (void)
209 {
210 void *tmp;
211 int size;
212 int i;
214 size = cpu_count * CPU_SUBMIT_MAX; /* always alloc for all states */
216 if (size <= 0)
217 return 0;
219 if (cpu_cells >= size)
220 return 0;
222 if (values == NULL) {
223 values = malloc(size * sizeof(*values));
224 if (values == NULL)
225 return -1;
226 for (i = 0; i < size; i++)
227 memset(&values[i], 0, sizeof(*values));
228 cpu_cells = size;
229 return 0;
230 }
232 tmp = realloc(values, size * sizeof(*values));
234 if (tmp == NULL) {
235 ERROR ("cpu plugin: could not reserve enough space to hold states");
236 values = NULL;
237 return -1;
238 }
240 values = tmp;
242 for (i = cpu_cells ; i < size; i++)
243 memset(&values[i], 0, sizeof(*values));
245 cpu_cells = size;
246 return 0;
247 } /* cpu_states_grow */
250 static int init (void)
251 {
252 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
253 kern_return_t status;
255 port_host = mach_host_self ();
257 /* FIXME: Free `cpu_list' if it's not NULL */
258 if ((status = host_processors (port_host, &cpu_list, &cpu_list_len)) != KERN_SUCCESS)
259 {
260 ERROR ("cpu plugin: host_processors returned %i", (int) status);
261 cpu_list_len = 0;
262 return (-1);
263 }
265 DEBUG ("host_processors returned %i %s", (int) cpu_list_len, cpu_list_len == 1 ? "processor" : "processors");
266 INFO ("cpu plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
268 cpu_temp_retry_max = 86400 / CDTIME_T_TO_TIME_T (plugin_get_interval ());
269 /* #endif PROCESSOR_CPU_LOAD_INFO */
271 #elif defined(HAVE_LIBKSTAT)
272 kstat_t *ksp_chain;
274 numcpu = 0;
276 if (kc == NULL)
277 return (-1);
279 /* Solaris doesn't count linear.. *sigh* */
280 for (numcpu = 0, ksp_chain = kc->kc_chain;
281 (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
282 ksp_chain = ksp_chain->ks_next)
283 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
284 ksp[numcpu++] = ksp_chain;
285 /* #endif HAVE_LIBKSTAT */
287 #elif CAN_USE_SYSCTL
288 size_t numcpu_size;
289 int mib[2] = {CTL_HW, HW_NCPU};
290 int status;
292 numcpu = 0;
293 numcpu_size = sizeof (numcpu);
295 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
296 &numcpu, &numcpu_size, NULL, 0);
297 if (status == -1)
298 {
299 char errbuf[1024];
300 WARNING ("cpu plugin: sysctl: %s",
301 sstrerror (errno, errbuf, sizeof (errbuf)));
302 return (-1);
303 }
304 /* #endif CAN_USE_SYSCTL */
306 #elif defined (HAVE_SYSCTLBYNAME)
307 size_t numcpu_size;
309 numcpu_size = sizeof (numcpu);
311 if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
312 {
313 char errbuf[1024];
314 WARNING ("cpu plugin: sysctlbyname(hw.ncpu): %s",
315 sstrerror (errno, errbuf, sizeof (errbuf)));
316 return (-1);
317 }
319 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
320 numcpu_size = sizeof (maxcpu);
322 if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0)
323 {
324 char errbuf[1024];
325 WARNING ("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s",
326 sstrerror (errno, errbuf, sizeof (errbuf)));
327 return (-1);
328 }
329 #else
330 if (numcpu != 1)
331 NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
332 #endif
333 /* #endif HAVE_SYSCTLBYNAME */
335 #elif defined(HAVE_LIBSTATGRAB)
336 /* nothing to initialize */
337 /* #endif HAVE_LIBSTATGRAB */
339 #elif defined(HAVE_PERFSTAT)
340 /* nothing to initialize */
341 #endif /* HAVE_PERFSTAT */
343 return (0);
344 } /* int init */
346 static void submit_value (int cpu_num, int cpu_state, const char *type, value_t value)
347 {
348 value_t values[1];
349 value_list_t vl = VALUE_LIST_INIT;
351 memcpy(&values[0], &value, sizeof(value));
353 vl.values = values;
354 vl.values_len = 1;
356 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
357 sstrncpy (vl.plugin, "cpu", sizeof (vl.plugin));
358 sstrncpy (vl.type, type, sizeof (vl.type));
359 sstrncpy (vl.type_instance, cpu_state_names[cpu_state],
360 sizeof (vl.type_instance));
362 if (cpu_num >= 0) {
363 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
364 "%i", cpu_num);
365 }
366 plugin_dispatch_values (&vl);
367 }
369 static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
370 {
371 value_t value;
373 value.gauge = percent;
374 submit_value (cpu_num, cpu_state, "percent", value);
375 }
377 static void submit_derive(int cpu_num, int cpu_state, derive_t derive)
378 {
379 value_t value;
381 value.derive = derive;
382 submit_value (cpu_num, cpu_state, "cpu", value);
383 }
385 static void submit_flush (void)
386 {
387 int i = 0;
388 int cpu_submit_max = CPU_SUBMIT_MAX;
390 if (report_by_cpu) {
391 cpu_count = 0;
392 return;
393 }
395 if (report_active)
396 cpu_submit_max = CPU_SUBMIT_MAX;
397 else
398 cpu_submit_max = CPU_SUBMIT_ACTIVE;
399 for (i = 0; i < cpu_submit_max; i++) {
400 if (agg_values[i] == -1)
401 continue;
403 if (report_percent)
404 submit_percent(-1, i, agg_values[i] / cpu_count);
405 else
406 submit_derive(-1, i, agg_values[i]);
407 agg_values[i] = -1;
408 }
409 cpu_count = 0;
410 }
412 static void submit (int cpu_num, derive_t *derives)
413 {
415 int i = 0;
416 int cpu_submit_max = CPU_SUBMIT_MAX;
418 if (report_active)
419 cpu_submit_max = CPU_SUBMIT_MAX;
420 else
421 cpu_submit_max = CPU_SUBMIT_ACTIVE;
423 if (!report_percent && report_by_cpu) {
424 derive_t cpu_active = 0;
425 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++)
426 {
427 if (derives[i] == -1)
428 continue;
430 if (i != CPU_SUBMIT_IDLE)
431 cpu_active += derives[i];
433 submit_derive(cpu_num, i, derives[i]);
434 }
435 if (report_active)
436 submit_derive(cpu_num, CPU_SUBMIT_ACTIVE, cpu_active);
437 }
438 else {
439 cdtime_t cdt;
440 gauge_t value;
441 gauge_t cpu_total = 0;
442 gauge_t cpu_active = 0;
443 gauge_t local_rates[CPU_SUBMIT_MAX];
445 cpu_count++;
446 if (cpu_states_grow())
447 return;
449 memset(local_rates, 0, sizeof(local_rates));
451 cdt = cdtime();
452 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++) {
453 if (report_percent) {
454 value_t rate;
455 int index;
457 if (derives[i] == -1)
458 continue;
460 index = (cpu_num * CPU_SUBMIT_MAX) + i;
461 if (value_to_rate(&rate, derives[i], &values[index],
462 DS_TYPE_DERIVE, cdt) != 0) {
463 local_rates[i] = -1;
464 continue;
465 }
467 local_rates[i] = rate.gauge;
468 cpu_total += rate.gauge;
469 if (i != CPU_SUBMIT_IDLE)
470 cpu_active += rate.gauge;
471 }
472 else {
473 cpu_total += derives[i];
474 if (i != CPU_SUBMIT_IDLE)
475 cpu_active += derives[i];
476 }
477 }
478 if (cpu_total == 0.0)
479 return;
481 if (report_active)
482 local_rates[CPU_SUBMIT_ACTIVE] = cpu_active;
484 for (i = 0; i < cpu_submit_max; i++) {
485 if (local_rates[i] == -1)
486 continue;
488 if (report_percent)
489 value = (local_rates[i] / cpu_total) * 100;
490 else
491 value = derives[i];
492 if (report_by_cpu) {
493 if (report_percent) {
494 submit_percent (cpu_num, i, value);
495 } else {
496 submit_derive(cpu_num, i, value);
497 }
498 }
499 else {
500 if (agg_values[i] == -1)
501 agg_values[i] = value;
502 else
503 agg_values[i] += value;
504 }
505 }
506 }
507 }
509 static int cpu_read (void)
510 {
511 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
512 int cpu;
514 kern_return_t status;
516 #if PROCESSOR_CPU_LOAD_INFO
517 processor_cpu_load_info_data_t cpu_info;
518 mach_msg_type_number_t cpu_info_len;
519 #endif
520 #if PROCESSOR_TEMPERATURE
521 processor_info_data_t cpu_temp;
522 mach_msg_type_number_t cpu_temp_len;
523 #endif
525 host_t cpu_host;
527 for (cpu = 0; cpu < cpu_list_len; cpu++)
528 {
529 #if PROCESSOR_CPU_LOAD_INFO
530 derive_t derives[CPU_SUBMIT_MAX] = {
531 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
532 };
533 memset(derives, -1, sizeof(derives));
534 cpu_host = 0;
535 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
537 if ((status = processor_info (cpu_list[cpu],
538 PROCESSOR_CPU_LOAD_INFO, &cpu_host,
539 (processor_info_t) &cpu_info, &cpu_info_len)) != KERN_SUCCESS)
540 {
541 ERROR ("cpu plugin: processor_info failed with status %i", (int) status);
542 continue;
543 }
545 if (cpu_info_len < CPU_STATE_MAX)
546 {
547 ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
548 continue;
549 }
551 derives[CPU_SUBMIT_USER] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER];
552 derives[CPU_SUBMIT_NICE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE];
553 derives[CPU_SUBMIT_SYSTEM] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM];
554 derives[CPU_SUBMIT_IDLE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE];
555 submit (cpu, derives);
557 #endif /* PROCESSOR_CPU_LOAD_INFO */
558 #if PROCESSOR_TEMPERATURE
559 /*
560 * Not all Apple computers do have this ability. To minimize
561 * the messages sent to the syslog we do an exponential
562 * stepback if `processor_info' fails. We still try ~once a day
563 * though..
564 */
565 if (cpu_temp_retry_counter > 0)
566 {
567 cpu_temp_retry_counter--;
568 continue;
569 }
571 cpu_temp_len = PROCESSOR_INFO_MAX;
573 status = processor_info (cpu_list[cpu],
574 PROCESSOR_TEMPERATURE,
575 &cpu_host,
576 cpu_temp, &cpu_temp_len);
577 if (status != KERN_SUCCESS)
578 {
579 ERROR ("cpu plugin: processor_info failed: %s",
580 mach_error_string (status));
582 cpu_temp_retry_counter = cpu_temp_retry_step;
583 cpu_temp_retry_step *= 2;
584 if (cpu_temp_retry_step > cpu_temp_retry_max)
585 cpu_temp_retry_step = cpu_temp_retry_max;
587 continue;
588 }
590 if (cpu_temp_len != 1)
591 {
592 DEBUG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
593 (int) cpu_temp_len);
594 continue;
595 }
597 cpu_temp_retry_counter = 0;
598 cpu_temp_retry_step = 1;
599 #endif /* PROCESSOR_TEMPERATURE */
600 }
601 submit_flush ();
602 /* #endif PROCESSOR_CPU_LOAD_INFO */
604 #elif defined(KERNEL_LINUX)
605 int cpu;
606 FILE *fh;
607 char buf[1024];
609 char *fields[9];
610 int numfields;
612 if ((fh = fopen ("/proc/stat", "r")) == NULL)
613 {
614 char errbuf[1024];
615 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
616 sstrerror (errno, errbuf, sizeof (errbuf)));
617 return (-1);
618 }
620 while (fgets (buf, 1024, fh) != NULL)
621 {
622 derive_t derives[CPU_SUBMIT_MAX] = {
623 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
624 };
626 if (strncmp (buf, "cpu", 3))
627 continue;
628 if ((buf[3] < '0') || (buf[3] > '9'))
629 continue;
631 numfields = strsplit (buf, fields, 9);
632 if (numfields < 5)
633 continue;
635 cpu = atoi (fields[0] + 3);
636 derives[CPU_SUBMIT_USER] = atoll(fields[1]);
637 derives[CPU_SUBMIT_NICE] = atoll(fields[2]);
638 derives[CPU_SUBMIT_SYSTEM] = atoll(fields[3]);
639 derives[CPU_SUBMIT_IDLE] = atoll(fields[4]);
641 if (numfields >= 8)
642 {
643 derives[CPU_SUBMIT_WAIT] = atoll(fields[5]);
644 derives[CPU_SUBMIT_INTERRUPT] = atoll(fields[6]);
645 derives[CPU_SUBMIT_SOFTIRQ] = atoll(fields[7]);
647 if (numfields >= 9)
648 derives[CPU_SUBMIT_STEAL] = atoll(fields[8]);
649 }
650 submit(cpu, derives);
651 }
652 submit_flush();
654 fclose (fh);
655 /* #endif defined(KERNEL_LINUX) */
657 #elif defined(HAVE_LIBKSTAT)
658 int cpu;
659 static cpu_stat_t cs;
661 if (kc == NULL)
662 return (-1);
664 for (cpu = 0; cpu < numcpu; cpu++)
665 {
666 derive_t derives[CPU_SUBMIT_MAX] = {
667 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
668 };
670 if (kstat_read (kc, ksp[cpu], &cs) == -1)
671 continue; /* error message? */
673 memset(derives, -1, sizeof(derives));
674 derives[CPU_SUBMIT_IDLE] = cs.cpu_sysinfo.cpu[CPU_IDLE];
675 derives[CPU_SUBMIT_USER] = cs.cpu_sysinfo.cpu[CPU_USER];
676 derives[CPU_SUBMIT_SYSTEM] = cs.cpu_sysinfo.cpu[CPU_KERNEL];
677 derives[CPU_SUBMIT_WAIT] = cs.cpu_sysinfo.cpu[CPU_WAIT];
678 submit (ksp[cpu]->ks_instance, derives);
679 }
680 submit_flush ();
681 /* #endif defined(HAVE_LIBKSTAT) */
683 #elif CAN_USE_SYSCTL
684 uint64_t cpuinfo[numcpu][CPUSTATES];
685 size_t cpuinfo_size;
686 int status;
687 int i;
689 if (numcpu < 1)
690 {
691 ERROR ("cpu plugin: Could not determine number of "
692 "installed CPUs using sysctl(3).");
693 return (-1);
694 }
696 memset (cpuinfo, 0, sizeof (cpuinfo));
698 #if defined(KERN_CPTIME2)
699 if (numcpu > 1) {
700 for (i = 0; i < numcpu; i++) {
701 int mib[] = {CTL_KERN, KERN_CPTIME2, i};
703 cpuinfo_size = sizeof (cpuinfo[0]);
705 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
706 cpuinfo[i], &cpuinfo_size, NULL, 0);
707 if (status == -1) {
708 char errbuf[1024];
709 ERROR ("cpu plugin: sysctl failed: %s.",
710 sstrerror (errno, errbuf, sizeof (errbuf)));
711 return (-1);
712 }
713 }
714 }
715 else
716 #endif /* defined(KERN_CPTIME2) */
717 {
718 int mib[] = {CTL_KERN, KERN_CPTIME};
719 long cpuinfo_tmp[CPUSTATES];
721 cpuinfo_size = sizeof(cpuinfo_tmp);
723 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
724 &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
725 if (status == -1)
726 {
727 char errbuf[1024];
728 ERROR ("cpu plugin: sysctl failed: %s.",
729 sstrerror (errno, errbuf, sizeof (errbuf)));
730 return (-1);
731 }
733 for(i = 0; i < CPUSTATES; i++) {
734 cpuinfo[0][i] = cpuinfo_tmp[i];
735 }
736 }
738 for (i = 0; i < numcpu; i++) {
739 derive_t derives[CPU_SUBMIT_MAX] = {
740 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
741 };
743 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
744 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
745 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
746 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
747 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
748 submit(i, derives);
749 }
750 submit_flush();
751 /* #endif CAN_USE_SYSCTL */
752 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES)
753 long cpuinfo[maxcpu][CPUSTATES];
754 size_t cpuinfo_size;
755 int i;
757 memset (cpuinfo, 0, sizeof (cpuinfo));
759 cpuinfo_size = sizeof (cpuinfo);
760 if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
761 {
762 char errbuf[1024];
763 ERROR ("cpu plugin: sysctlbyname failed: %s.",
764 sstrerror (errno, errbuf, sizeof (errbuf)));
765 return (-1);
766 }
768 for (i = 0; i < numcpu; i++) {
769 derive_t derives[CPU_SUBMIT_MAX] = {
770 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
771 };
773 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
774 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
775 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
776 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
777 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
778 submit(i, derives);
779 }
780 submit_flush();
782 /* #endif HAVE_SYSCTL_KERN_CP_TIMES */
783 #elif defined(HAVE_SYSCTLBYNAME)
784 long cpuinfo[CPUSTATES];
785 size_t cpuinfo_size;
786 derive_t derives[CPU_SUBMIT_MAX] = {
787 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
788 };
790 cpuinfo_size = sizeof (cpuinfo);
792 if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
793 {
794 char errbuf[1024];
795 ERROR ("cpu plugin: sysctlbyname failed: %s.",
796 sstrerror (errno, errbuf, sizeof (errbuf)));
797 return (-1);
798 }
800 derives[CPU_SUBMIT_USER] = cpuinfo[CP_USER];
801 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[CP_SYS];
802 derives[CPU_SUBMIT_NICE] = cpuinfo[CP_NICE];
803 derives[CPU_SUBMIT_IDLE] = cpuinfo[CP_IDLE];
804 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[CP_INTR];
805 submit(0, derives);
806 submit_flush();
808 /* #endif HAVE_SYSCTLBYNAME */
810 #elif defined(HAVE_LIBSTATGRAB)
811 sg_cpu_stats *cs;
812 derive_t derives[CPU_SUBMIT_MAX] = {
813 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
814 };
815 cs = sg_get_cpu_stats ();
817 if (cs == NULL)
818 {
819 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
820 return (-1);
821 }
823 derives[CPU_SUBMIT_IDLE] = (derive_t) cs->idle;
824 derives[CPU_SUBMIT_NICE] = (derive_t) cs->nice;
825 derives[CPU_SUBMIT_SWAP] = (derive_t) cs->swap;
826 derives[CPU_SUBMIT_SYSTEM] = (derive_t) cs->kernel;
827 derives[CPU_SUBMIT_USER] = (derive_t) cs->user;
828 derives[CPU_SUBMIT_WAIT] = (derive_t) cs->iowait;
829 submit(0, derives);
830 submit_flush();
831 /* #endif HAVE_LIBSTATGRAB */
833 #elif defined(HAVE_PERFSTAT)
834 perfstat_id_t id;
835 int i, cpus;
837 numcpu = perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
838 if(numcpu == -1)
839 {
840 char errbuf[1024];
841 WARNING ("cpu plugin: perfstat_cpu: %s",
842 sstrerror (errno, errbuf, sizeof (errbuf)));
843 return (-1);
844 }
846 if (pnumcpu != numcpu || perfcpu == NULL)
847 {
848 if (perfcpu != NULL)
849 free(perfcpu);
850 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
851 }
852 pnumcpu = numcpu;
854 id.name[0] = '\0';
855 if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
856 {
857 char errbuf[1024];
858 WARNING ("cpu plugin: perfstat_cpu: %s",
859 sstrerror (errno, errbuf, sizeof (errbuf)));
860 return (-1);
861 }
863 for (i = 0; i < cpus; i++)
864 {
865 derive_t derives[CPU_SUBMIT_MAX] = {
866 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
867 };
868 derives[CPU_SUBMIT_IDLE] = perfcpu[i].idle;
869 derives[CPU_SUBMIT_SYSTEM] = perfcpu[i].sys;
870 derives[CPU_SUBMIT_USER] = perfcpu[i].user;
871 derives[CPU_SUBMIT_WAIT] = perfcpu[i].wait;
872 submit(i, derives);
873 }
874 submit_flush();
875 #endif /* HAVE_PERFSTAT */
877 return (0);
878 }
880 void module_register (void)
881 {
882 plugin_register_init ("cpu", init);
883 plugin_register_config ("cpu", cpu_config, config_keys, config_keys_num);
884 plugin_register_read ("cpu", cpu_read);
885 } /* void module_register */