1 /**
2 * collectd - src/cpu.c
3 * Copyright (C) 2005-2014 Florian octo Forster
4 * Copyright (C) 2008 Oleg King
5 * Copyright (C) 2009 Simon Kuhnle
6 * Copyright (C) 2009 Manuel Sanmartin
7 * Copyright (C) 2013-2014 Pierre-Yves Ritschard
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; only version 2 of the License is applicable.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 * Authors:
23 * Florian octo Forster <octo at collectd.org>
24 * Oleg King <king2 at kaluga.ru>
25 * Simon Kuhnle <simon at blarzwurst.de>
26 * Manuel Sanmartin
27 * Pierre-Yves Ritschard <pyr at spootnik.org>
28 **/
30 #include "collectd.h"
32 #include "common.h"
33 #include "plugin.h"
35 #ifdef HAVE_MACH_KERN_RETURN_H
36 # include <mach/kern_return.h>
37 #endif
38 #ifdef HAVE_MACH_MACH_INIT_H
39 # include <mach/mach_init.h>
40 #endif
41 #ifdef HAVE_MACH_HOST_PRIV_H
42 # include <mach/host_priv.h>
43 #endif
44 #if HAVE_MACH_MACH_ERROR_H
45 # include <mach/mach_error.h>
46 #endif
47 #ifdef HAVE_MACH_PROCESSOR_INFO_H
48 # include <mach/processor_info.h>
49 #endif
50 #ifdef HAVE_MACH_PROCESSOR_H
51 # include <mach/processor.h>
52 #endif
53 #ifdef HAVE_MACH_VM_MAP_H
54 # include <mach/vm_map.h>
55 #endif
57 #ifdef HAVE_LIBKSTAT
58 # include <sys/sysinfo.h>
59 #endif /* HAVE_LIBKSTAT */
61 #if (defined(HAVE_SYSCTL) && HAVE_SYSCTL) \
62 || (defined(HAVE_SYSCTLBYNAME) && HAVE_SYSCTLBYNAME)
63 # ifdef HAVE_SYS_SYSCTL_H
64 # include <sys/sysctl.h>
65 # endif
67 # ifdef HAVE_SYS_DKSTAT_H
68 # include <sys/dkstat.h>
69 # endif
71 # if !defined(CP_USER) || !defined(CP_NICE) || !defined(CP_SYS) || !defined(CP_INTR) || !defined(CP_IDLE) || !defined(CPUSTATES)
72 # define CP_USER 0
73 # define CP_NICE 1
74 # define CP_SYS 2
75 # define CP_INTR 3
76 # define CP_IDLE 4
77 # define CPUSTATES 5
78 # endif
79 #endif /* HAVE_SYSCTL || HAVE_SYSCTLBYNAME */
81 #if HAVE_SYSCTL
82 # if defined(CTL_HW) && defined(HW_NCPU) \
83 && defined(CTL_KERN) && defined(KERN_CPTIME) && defined(CPUSTATES)
84 # define CAN_USE_SYSCTL 1
85 # else
86 # define CAN_USE_SYSCTL 0
87 # endif
88 #else
89 # define CAN_USE_SYSCTL 0
90 #endif
92 #define COLLECTD_CPU_STATE_USER 0
93 #define COLLECTD_CPU_STATE_SYSTEM 1
94 #define COLLECTD_CPU_STATE_WAIT 2
95 #define COLLECTD_CPU_STATE_NICE 3
96 #define COLLECTD_CPU_STATE_SWAP 4
97 #define COLLECTD_CPU_STATE_INTERRUPT 5
98 #define COLLECTD_CPU_STATE_SOFTIRQ 6
99 #define COLLECTD_CPU_STATE_STEAL 7
100 #define COLLECTD_CPU_STATE_IDLE 8
101 #define COLLECTD_CPU_STATE_ACTIVE 9 /* sum of (!idle) */
102 #define COLLECTD_CPU_STATE_MAX 10 /* #states */
104 #if HAVE_STATGRAB_H
105 # include <statgrab.h>
106 #endif
108 # ifdef HAVE_PERFSTAT
109 # include <sys/protosw.h>
110 # include <libperfstat.h>
111 # endif /* HAVE_PERFSTAT */
113 #if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT \
114 && !CAN_USE_SYSCTL && !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
115 # error "No applicable input method."
116 #endif
118 static const char *cpu_state_names[] = {
119 "user",
120 "system",
121 "wait",
122 "nice",
123 "swap",
124 "interrupt",
125 "softirq",
126 "steal",
127 "idle",
128 "active"
129 };
131 #ifdef PROCESSOR_CPU_LOAD_INFO
132 static mach_port_t port_host;
133 static processor_port_array_t cpu_list;
134 static mach_msg_type_number_t cpu_list_len;
135 /* #endif PROCESSOR_CPU_LOAD_INFO */
137 #elif defined(KERNEL_LINUX)
138 /* no variables needed */
139 /* #endif KERNEL_LINUX */
141 #elif defined(HAVE_LIBKSTAT)
142 /* colleague tells me that Sun doesn't sell systems with more than 100 or so CPUs.. */
143 # define MAX_NUMCPU 256
144 extern kstat_ctl_t *kc;
145 static kstat_t *ksp[MAX_NUMCPU];
146 static int numcpu;
147 /* #endif HAVE_LIBKSTAT */
149 #elif CAN_USE_SYSCTL
150 static int numcpu;
151 /* #endif CAN_USE_SYSCTL */
153 #elif defined(HAVE_SYSCTLBYNAME)
154 static int numcpu;
155 # ifdef HAVE_SYSCTL_KERN_CP_TIMES
156 static int maxcpu;
157 # endif /* HAVE_SYSCTL_KERN_CP_TIMES */
158 /* #endif HAVE_SYSCTLBYNAME */
160 #elif defined(HAVE_LIBSTATGRAB)
161 /* no variables needed */
162 /* #endif HAVE_LIBSTATGRAB */
164 #elif defined(HAVE_PERFSTAT)
165 static perfstat_cpu_t *perfcpu;
166 static int numcpu;
167 static int pnumcpu;
168 #endif /* HAVE_PERFSTAT */
170 #define RATE_ADD(sum, val) do { \
171 if (isnan (sum)) \
172 (sum) = (val); \
173 else if (!isnan (val)) \
174 (sum) += (val); \
175 } while (0)
177 struct cpu_state_s
178 {
179 value_to_rate_state_t conv;
180 gauge_t rate;
181 _Bool has_value;
182 };
183 typedef struct cpu_state_s cpu_state_t;
185 static cpu_state_t *cpu_states = NULL;
186 static size_t cpu_states_num = 0; /* #cpu_states allocated */
188 /* Highest CPU number in the current iteration. Used by the dispatch logic to
189 * determine how many CPUs there were. Reset to 0 by cpu_reset(). */
190 static size_t global_cpu_num = 0;
192 static _Bool report_by_cpu = 1;
193 static _Bool report_by_state = 1;
194 static _Bool report_percent = 0;
196 static const char *config_keys[] =
197 {
198 "ReportByCpu",
199 "ReportByState",
200 "ValuesPercentage"
201 };
202 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
204 static int cpu_config (char const *key, char const *value) /* {{{ */
205 {
206 if (strcasecmp (key, "ReportByCpu") == 0)
207 report_by_cpu = IS_TRUE (value) ? 1 : 0;
208 else if (strcasecmp (key, "ValuesPercentage") == 0)
209 report_percent = IS_TRUE (value) ? 1 : 0;
210 else if (strcasecmp (key, "ReportByState") == 0)
211 report_by_state = IS_TRUE (value) ? 1 : 0;
212 else
213 return (-1);
215 return (0);
216 } /* }}} int cpu_config */
218 static int init (void)
219 {
220 #if PROCESSOR_CPU_LOAD_INFO
221 kern_return_t status;
223 port_host = mach_host_self ();
225 status = host_processors (port_host, &cpu_list, &cpu_list_len);
226 if (status == KERN_INVALID_ARGUMENT)
227 {
228 ERROR ("cpu plugin: Don't have a privileged host control port. "
229 "The most common cause for this problem is "
230 "that collectd is running without root "
231 "privileges, which are required to read CPU "
232 "load information. "
233 "<https://collectd.org/bugs/22>");
234 cpu_list_len = 0;
235 return (-1);
236 }
237 if (status != KERN_SUCCESS)
238 {
239 ERROR ("cpu plugin: host_processors() failed with status %d.", (int) status);
240 cpu_list_len = 0;
241 return (-1);
242 }
244 INFO ("cpu plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
245 /* #endif PROCESSOR_CPU_LOAD_INFO */
247 #elif defined(HAVE_LIBKSTAT)
248 kstat_t *ksp_chain;
250 numcpu = 0;
252 if (kc == NULL)
253 return (-1);
255 /* Solaris doesn't count linear.. *sigh* */
256 for (numcpu = 0, ksp_chain = kc->kc_chain;
257 (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
258 ksp_chain = ksp_chain->ks_next)
259 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
260 ksp[numcpu++] = ksp_chain;
261 /* #endif HAVE_LIBKSTAT */
263 #elif CAN_USE_SYSCTL
264 size_t numcpu_size;
265 int mib[2] = {CTL_HW, HW_NCPU};
266 int status;
268 numcpu = 0;
269 numcpu_size = sizeof (numcpu);
271 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
272 &numcpu, &numcpu_size, NULL, 0);
273 if (status == -1)
274 {
275 char errbuf[1024];
276 WARNING ("cpu plugin: sysctl: %s",
277 sstrerror (errno, errbuf, sizeof (errbuf)));
278 return (-1);
279 }
280 /* #endif CAN_USE_SYSCTL */
282 #elif defined (HAVE_SYSCTLBYNAME)
283 size_t numcpu_size;
285 numcpu_size = sizeof (numcpu);
287 if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
288 {
289 char errbuf[1024];
290 WARNING ("cpu plugin: sysctlbyname(hw.ncpu): %s",
291 sstrerror (errno, errbuf, sizeof (errbuf)));
292 return (-1);
293 }
295 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
296 numcpu_size = sizeof (maxcpu);
298 if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0)
299 {
300 char errbuf[1024];
301 WARNING ("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s",
302 sstrerror (errno, errbuf, sizeof (errbuf)));
303 return (-1);
304 }
305 #else
306 if (numcpu != 1)
307 NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
308 #endif
309 /* #endif HAVE_SYSCTLBYNAME */
311 #elif defined(HAVE_LIBSTATGRAB)
312 /* nothing to initialize */
313 /* #endif HAVE_LIBSTATGRAB */
315 #elif defined(HAVE_PERFSTAT)
316 /* nothing to initialize */
317 #endif /* HAVE_PERFSTAT */
319 return (0);
320 } /* int init */
322 static void submit_value (int cpu_num, int cpu_state, const char *type, value_t value)
323 {
324 value_t values[1];
325 value_list_t vl = VALUE_LIST_INIT;
327 memcpy(&values[0], &value, sizeof(value));
329 vl.values = values;
330 vl.values_len = 1;
332 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
333 sstrncpy (vl.plugin, "cpu", sizeof (vl.plugin));
334 sstrncpy (vl.type, type, sizeof (vl.type));
335 sstrncpy (vl.type_instance, cpu_state_names[cpu_state],
336 sizeof (vl.type_instance));
338 if (cpu_num >= 0) {
339 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
340 "%i", cpu_num);
341 }
342 plugin_dispatch_values (&vl);
343 }
345 static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
346 {
347 value_t value;
349 /* This function is called for all known CPU states, but each read
350 * method will only report a subset. The remaining states are left as
351 * NAN and we ignore them here. */
352 if (isnan (percent))
353 return;
355 value.gauge = percent;
356 submit_value (cpu_num, cpu_state, "percent", value);
357 }
359 static void submit_derive(int cpu_num, int cpu_state, derive_t derive)
360 {
361 value_t value;
363 value.derive = derive;
364 submit_value (cpu_num, cpu_state, "cpu", value);
365 }
367 /* Takes the zero-index number of a CPU and makes sure that the module-global
368 * cpu_states buffer is large enough. Returne ENOMEM on erorr. */
369 static int cpu_states_alloc (size_t cpu_num) /* {{{ */
370 {
371 cpu_state_t *tmp;
372 size_t sz;
374 sz = (((size_t) cpu_num) + 1) * COLLECTD_CPU_STATE_MAX;
375 assert (sz > 0);
377 /* We already have enough space. */
378 if (cpu_states_num >= sz)
379 return 0;
381 tmp = realloc (cpu_states, sz * sizeof (*cpu_states));
382 if (tmp == NULL)
383 {
384 ERROR ("cpu plugin: realloc failed.");
385 return (ENOMEM);
386 }
387 cpu_states = tmp;
388 tmp = cpu_states + cpu_states_num;
390 memset (tmp, 0, (sz - cpu_states_num) * sizeof (*cpu_states));
391 cpu_states_num = sz;
392 return 0;
393 } /* }}} cpu_states_alloc */
395 static cpu_state_t *get_cpu_state (size_t cpu_num, size_t state) /* {{{ */
396 {
397 size_t index = ((cpu_num * COLLECTD_CPU_STATE_MAX) + state);
399 if (index >= cpu_states_num)
400 return (NULL);
402 return (&cpu_states[index]);
403 } /* }}} cpu_state_t *get_cpu_state */
405 /* Populates the per-CPU COLLECTD_CPU_STATE_ACTIVE rate and the global rate_by_state
406 * array. */
407 static void aggregate (gauge_t *sum_by_state) /* {{{ */
408 {
409 size_t cpu_num;
410 size_t state;
412 for (state = 0; state < COLLECTD_CPU_STATE_MAX; state++)
413 sum_by_state[state] = NAN;
415 for (cpu_num = 0; cpu_num < global_cpu_num; cpu_num++)
416 {
417 cpu_state_t *this_cpu_states = get_cpu_state (cpu_num, 0);
419 this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate = NAN;
421 for (state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++)
422 {
423 if (!this_cpu_states[state].has_value)
424 continue;
426 RATE_ADD (sum_by_state[state], this_cpu_states[state].rate);
427 if (state != COLLECTD_CPU_STATE_IDLE)
428 RATE_ADD (this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate, this_cpu_states[state].rate);
429 }
431 if (!isnan (this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate))
432 this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].has_value = 1;
434 RATE_ADD (sum_by_state[COLLECTD_CPU_STATE_ACTIVE], this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate);
435 }
436 } /* }}} void aggregate */
438 /* Commits (dispatches) the values for one CPU or the global aggregation.
439 * cpu_num is the index of the CPU to be committed or -1 in case of the global
440 * aggregation. rates is a pointer to COLLECTD_CPU_STATE_MAX gauge_t values holding the
441 * current rate; each rate may be NAN. Calculates the percentage of each state
442 * and dispatches the metric. */
443 static void cpu_commit_one (int cpu_num, /* {{{ */
444 gauge_t rates[static COLLECTD_CPU_STATE_MAX])
445 {
446 size_t state;
447 gauge_t sum;
449 sum = rates[COLLECTD_CPU_STATE_ACTIVE];
450 RATE_ADD (sum, rates[COLLECTD_CPU_STATE_IDLE]);
452 if (!report_by_state)
453 {
454 gauge_t percent = 100.0 * rates[COLLECTD_CPU_STATE_ACTIVE] / sum;
455 submit_percent (cpu_num, COLLECTD_CPU_STATE_ACTIVE, percent);
456 return;
457 }
459 for (state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++)
460 {
461 gauge_t percent = 100.0 * rates[state] / sum;
462 submit_percent (cpu_num, state, percent);
463 }
464 } /* }}} void cpu_commit_one */
466 /* Resets the internal aggregation. This is called by the read callback after
467 * each iteration / after each call to cpu_commit(). */
468 static void cpu_reset (void) /* {{{ */
469 {
470 size_t i;
472 for (i = 0; i < cpu_states_num; i++)
473 cpu_states[i].has_value = 0;
475 global_cpu_num = 0;
476 } /* }}} void cpu_reset */
478 /* Legacy behavior: Dispatches the raw derive values without any aggregation. */
479 static void cpu_commit_without_aggregation (void) /* {{{ */
480 {
481 int state;
483 for (state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++)
484 {
485 size_t cpu_num;
487 for (cpu_num = 0; cpu_num < global_cpu_num; cpu_num++)
488 {
489 cpu_state_t *s = get_cpu_state (cpu_num, state);
491 if (!s->has_value)
492 continue;
494 submit_derive ((int) cpu_num, (int) state, s->conv.last_value.derive);
495 }
496 }
497 } /* }}} void cpu_commit_without_aggregation */
499 /* Aggregates the internal state and dispatches the metrics. */
500 static void cpu_commit (void) /* {{{ */
501 {
502 gauge_t global_rates[COLLECTD_CPU_STATE_MAX] = {
503 NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN /* Batman! */
504 };
505 size_t cpu_num;
507 if (report_by_state && report_by_cpu && !report_percent)
508 {
509 cpu_commit_without_aggregation ();
510 return;
511 }
513 aggregate (global_rates);
515 if (!report_by_cpu)
516 {
517 cpu_commit_one (-1, global_rates);
518 return;
519 }
521 for (cpu_num = 0; cpu_num < global_cpu_num; cpu_num++)
522 {
523 cpu_state_t *this_cpu_states = get_cpu_state (cpu_num, 0);
524 gauge_t local_rates[COLLECTD_CPU_STATE_MAX] = {
525 NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN
526 };
527 size_t state;
529 for (state = 0; state < COLLECTD_CPU_STATE_MAX; state++)
530 if (this_cpu_states[state].has_value)
531 local_rates[state] = this_cpu_states[state].rate;
533 cpu_commit_one ((int) cpu_num, local_rates);
534 }
535 } /* }}} void cpu_commit */
537 /* Adds a derive value to the internal state. This should be used by each read
538 * function for each state. At the end of the iteration, the read function
539 * should call cpu_commit(). */
540 static int cpu_stage (size_t cpu_num, size_t state, derive_t d, cdtime_t now) /* {{{ */
541 {
542 int status;
543 cpu_state_t *s;
544 gauge_t rate = NAN;
545 value_t val = {.derive = d};
547 if (state >= COLLECTD_CPU_STATE_ACTIVE)
548 return (EINVAL);
550 status = cpu_states_alloc (cpu_num);
551 if (status != 0)
552 return (status);
554 if (global_cpu_num <= cpu_num)
555 global_cpu_num = cpu_num + 1;
557 s = get_cpu_state (cpu_num, state);
559 status = value_to_rate (&rate, val, DS_TYPE_DERIVE, now, &s->conv);
560 if (status != 0)
561 return (status);
563 s->rate = rate;
564 s->has_value = 1;
565 return (0);
566 } /* }}} int cpu_stage */
568 static int cpu_read (void)
569 {
570 cdtime_t now = cdtime ();
572 #if PROCESSOR_CPU_LOAD_INFO /* {{{ */
573 int cpu;
575 kern_return_t status;
577 processor_cpu_load_info_data_t cpu_info;
578 mach_msg_type_number_t cpu_info_len;
580 host_t cpu_host;
582 for (cpu = 0; cpu < cpu_list_len; cpu++)
583 {
584 cpu_host = 0;
585 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
587 status = processor_info (cpu_list[cpu], PROCESSOR_CPU_LOAD_INFO, &cpu_host,
588 (processor_info_t) &cpu_info, &cpu_info_len);
589 if (status != KERN_SUCCESS)
590 {
591 ERROR ("cpu plugin: processor_info (PROCESSOR_CPU_LOAD_INFO) failed: %s",
592 mach_error_string (status));
593 continue;
594 }
596 if (cpu_info_len < CPU_STATE_MAX)
597 {
598 ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
599 continue;
600 }
602 cpu_stage (cpu, COLLECTD_CPU_STATE_USER, (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER], now);
603 cpu_stage (cpu, COLLECTD_CPU_STATE_NICE, (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE], now);
604 cpu_stage (cpu, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM], now);
605 cpu_stage (cpu, COLLECTD_CPU_STATE_IDLE, (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE], now);
606 }
607 /* }}} #endif PROCESSOR_CPU_LOAD_INFO */
609 #elif defined(KERNEL_LINUX) /* {{{ */
610 int cpu;
611 FILE *fh;
612 char buf[1024];
614 char *fields[9];
615 int numfields;
617 if ((fh = fopen ("/proc/stat", "r")) == NULL)
618 {
619 char errbuf[1024];
620 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
621 sstrerror (errno, errbuf, sizeof (errbuf)));
622 return (-1);
623 }
625 while (fgets (buf, 1024, fh) != NULL)
626 {
627 if (strncmp (buf, "cpu", 3))
628 continue;
629 if ((buf[3] < '0') || (buf[3] > '9'))
630 continue;
632 numfields = strsplit (buf, fields, 9);
633 if (numfields < 5)
634 continue;
636 cpu = atoi (fields[0] + 3);
638 cpu_stage (cpu, COLLECTD_CPU_STATE_USER, (derive_t) atoll(fields[1]), now);
639 cpu_stage (cpu, COLLECTD_CPU_STATE_NICE, (derive_t) atoll(fields[2]), now);
640 cpu_stage (cpu, COLLECTD_CPU_STATE_SYSTEM, (derive_t) atoll(fields[3]), now);
641 cpu_stage (cpu, COLLECTD_CPU_STATE_IDLE, (derive_t) atoll(fields[4]), now);
643 if (numfields >= 8)
644 {
645 cpu_stage (cpu, COLLECTD_CPU_STATE_WAIT, (derive_t) atoll(fields[5]), now);
646 cpu_stage (cpu, COLLECTD_CPU_STATE_INTERRUPT, (derive_t) atoll(fields[6]), now);
647 cpu_stage (cpu, COLLECTD_CPU_STATE_SOFTIRQ, (derive_t) atoll(fields[7]), now);
649 if (numfields >= 9)
650 cpu_stage (cpu, COLLECTD_CPU_STATE_STEAL, (derive_t) atoll(fields[8]), now);
651 }
652 }
653 fclose (fh);
654 /* }}} #endif defined(KERNEL_LINUX) */
656 #elif defined(HAVE_LIBKSTAT) /* {{{ */
657 int cpu;
658 static cpu_stat_t cs;
660 if (kc == NULL)
661 return (-1);
663 for (cpu = 0; cpu < numcpu; cpu++)
664 {
665 if (kstat_read (kc, ksp[cpu], &cs) == -1)
666 continue; /* error message? */
668 cpu_stage (ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_IDLE, (derive_t) cs.cpu_sysinfo.cpu[CPU_IDLE], now);
669 cpu_stage (ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_USER, (derive_t) cs.cpu_sysinfo.cpu[CPU_USER], now);
670 cpu_stage (ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cs.cpu_sysinfo.cpu[CPU_KERNEL], now);
671 cpu_stage (ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_WAIT, (derive_t) cs.cpu_sysinfo.cpu[CPU_WAIT], now);
672 }
673 /* }}} #endif defined(HAVE_LIBKSTAT) */
675 #elif CAN_USE_SYSCTL /* {{{ */
676 uint64_t cpuinfo[numcpu][CPUSTATES];
677 size_t cpuinfo_size;
678 int status;
679 int i;
681 if (numcpu < 1)
682 {
683 ERROR ("cpu plugin: Could not determine number of "
684 "installed CPUs using sysctl(3).");
685 return (-1);
686 }
688 memset (cpuinfo, 0, sizeof (cpuinfo));
690 #if defined(KERN_CPTIME2)
691 if (numcpu > 1) {
692 for (i = 0; i < numcpu; i++) {
693 int mib[] = {CTL_KERN, KERN_CPTIME2, i};
695 cpuinfo_size = sizeof (cpuinfo[0]);
697 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
698 cpuinfo[i], &cpuinfo_size, NULL, 0);
699 if (status == -1) {
700 char errbuf[1024];
701 ERROR ("cpu plugin: sysctl failed: %s.",
702 sstrerror (errno, errbuf, sizeof (errbuf)));
703 return (-1);
704 }
705 }
706 }
707 else
708 #endif /* defined(KERN_CPTIME2) */
709 {
710 int mib[] = {CTL_KERN, KERN_CPTIME};
711 long cpuinfo_tmp[CPUSTATES];
713 cpuinfo_size = sizeof(cpuinfo_tmp);
715 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
716 &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
717 if (status == -1)
718 {
719 char errbuf[1024];
720 ERROR ("cpu plugin: sysctl failed: %s.",
721 sstrerror (errno, errbuf, sizeof (errbuf)));
722 return (-1);
723 }
725 for(i = 0; i < CPUSTATES; i++) {
726 cpuinfo[0][i] = cpuinfo_tmp[i];
727 }
728 }
730 for (i = 0; i < numcpu; i++) {
731 cpu_stage (i, COLLECTD_CPU_STATE_USER, (derive_t) cpuinfo[i][CP_USER], now);
732 cpu_stage (i, COLLECTD_CPU_STATE_NICE, (derive_t) cpuinfo[i][CP_NICE], now);
733 cpu_stage (i, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cpuinfo[i][CP_SYS], now);
734 cpu_stage (i, COLLECTD_CPU_STATE_IDLE, (derive_t) cpuinfo[i][CP_IDLE], now);
735 cpu_stage (i, COLLECTD_CPU_STATE_INTERRUPT, (derive_t) cpuinfo[i][CP_INTR], now);
736 }
737 /* }}} #endif CAN_USE_SYSCTL */
739 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES) /* {{{ */
740 long cpuinfo[maxcpu][CPUSTATES];
741 size_t cpuinfo_size;
742 int i;
744 memset (cpuinfo, 0, sizeof (cpuinfo));
746 cpuinfo_size = sizeof (cpuinfo);
747 if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
748 {
749 char errbuf[1024];
750 ERROR ("cpu plugin: sysctlbyname failed: %s.",
751 sstrerror (errno, errbuf, sizeof (errbuf)));
752 return (-1);
753 }
755 for (i = 0; i < numcpu; i++) {
756 cpu_stage (i, COLLECTD_CPU_STATE_USER, (derive_t) cpuinfo[i][CP_USER], now);
757 cpu_stage (i, COLLECTD_CPU_STATE_NICE, (derive_t) cpuinfo[i][CP_NICE], now);
758 cpu_stage (i, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cpuinfo[i][CP_SYS], now);
759 cpu_stage (i, COLLECTD_CPU_STATE_IDLE, (derive_t) cpuinfo[i][CP_IDLE], now);
760 cpu_stage (i, COLLECTD_CPU_STATE_INTERRUPT, (derive_t) cpuinfo[i][CP_INTR], now);
761 }
762 /* }}} #endif HAVE_SYSCTL_KERN_CP_TIMES */
764 #elif defined(HAVE_SYSCTLBYNAME) /* {{{ */
765 long cpuinfo[CPUSTATES];
766 size_t cpuinfo_size;
768 cpuinfo_size = sizeof (cpuinfo);
770 if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
771 {
772 char errbuf[1024];
773 ERROR ("cpu plugin: sysctlbyname failed: %s.",
774 sstrerror (errno, errbuf, sizeof (errbuf)));
775 return (-1);
776 }
778 cpu_stage (0, COLLECTD_CPU_STATE_USER, (derive_t) cpuinfo[CP_USER], now);
779 cpu_stage (0, COLLECTD_CPU_STATE_NICE, (derive_t) cpuinfo[CP_NICE], now);
780 cpu_stage (0, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cpuinfo[CP_SYS], now);
781 cpu_stage (0, COLLECTD_CPU_STATE_IDLE, (derive_t) cpuinfo[CP_IDLE], now);
782 cpu_stage (0, COLLECTD_CPU_STATE_INTERRUPT, (derive_t) cpuinfo[CP_INTR], now);
783 /* }}} #endif HAVE_SYSCTLBYNAME */
785 #elif defined(HAVE_LIBSTATGRAB) /* {{{ */
786 sg_cpu_stats *cs;
787 cs = sg_get_cpu_stats ();
789 if (cs == NULL)
790 {
791 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
792 return (-1);
793 }
795 cpu_state (0, COLLECTD_CPU_STATE_IDLE, (derive_t) cs->idle);
796 cpu_state (0, COLLECTD_CPU_STATE_NICE, (derive_t) cs->nice);
797 cpu_state (0, COLLECTD_CPU_STATE_SWAP, (derive_t) cs->swap);
798 cpu_state (0, COLLECTD_CPU_STATE_SYSTEM, (derive_t) cs->kernel);
799 cpu_state (0, COLLECTD_CPU_STATE_USER, (derive_t) cs->user);
800 cpu_state (0, COLLECTD_CPU_STATE_WAIT, (derive_t) cs->iowait);
801 /* }}} #endif HAVE_LIBSTATGRAB */
803 #elif defined(HAVE_PERFSTAT) /* {{{ */
804 perfstat_id_t id;
805 int i, cpus;
807 numcpu = perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
808 if(numcpu == -1)
809 {
810 char errbuf[1024];
811 WARNING ("cpu plugin: perfstat_cpu: %s",
812 sstrerror (errno, errbuf, sizeof (errbuf)));
813 return (-1);
814 }
816 if (pnumcpu != numcpu || perfcpu == NULL)
817 {
818 free(perfcpu);
819 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
820 }
821 pnumcpu = numcpu;
823 id.name[0] = '\0';
824 if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
825 {
826 char errbuf[1024];
827 WARNING ("cpu plugin: perfstat_cpu: %s",
828 sstrerror (errno, errbuf, sizeof (errbuf)));
829 return (-1);
830 }
832 for (i = 0; i < cpus; i++)
833 {
834 cpu_stage (i, COLLECTD_CPU_STATE_IDLE, (derive_t) perfcpu[i].idle, now);
835 cpu_stage (i, COLLECTD_CPU_STATE_SYSTEM, (derive_t) perfcpu[i].sys, now);
836 cpu_stage (i, COLLECTD_CPU_STATE_USER, (derive_t) perfcpu[i].user, now);
837 cpu_stage (i, COLLECTD_CPU_STATE_WAIT, (derive_t) perfcpu[i].wait, now);
838 }
839 #endif /* }}} HAVE_PERFSTAT */
841 cpu_commit ();
842 cpu_reset ();
843 return (0);
844 }
846 void module_register (void)
847 {
848 plugin_register_init ("cpu", init);
849 plugin_register_config ("cpu", cpu_config, config_keys, config_keys_num);
850 plugin_register_read ("cpu", cpu_read);
851 } /* void module_register */
853 /* vim: set sw=8 sts=8 noet fdm=marker : */