src/cpu.c

   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 verplant.org>
  23  *   Oleg King <king2 at kaluga.ru>
  24  *   Simon Kuhnle <simon at blarzwurst.de>
  25  *   Manuel Sanmartin
  26  **/
  27
  28 #include "collectd.h"
  29 #include "common.h"
  30 #include "plugin.h"
  31
  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
  53
  54 #ifdef HAVE_LIBKSTAT
  55 # include <sys/sysinfo.h>
  56 #endif /* HAVE_LIBKSTAT */
  57
  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
  63
  64 # ifdef HAVE_SYS_DKSTAT_H
  65 #  include <sys/dkstat.h>
  66 # endif
  67
  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 */
  77
  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
  88
  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
 100
 101 #if HAVE_STATGRAB_H
 102 # include <statgrab.h>
 103 #endif
 104
 105 # ifdef HAVE_PERFSTAT
 106 #  include <sys/protosw.h>
 107 #  include <libperfstat.h>
 108 # endif /* HAVE_PERFSTAT */
 109
 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
 114
 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 };
 127
 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;
 132
 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 */
 139
 140 #elif defined(KERNEL_LINUX)
 141 /* no variables needed */
 142 /* #endif KERNEL_LINUX */
 143
 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 */
 151
 152 #elif CAN_USE_SYSCTL
 153 static int numcpu;
 154 /* #endif CAN_USE_SYSCTL */
 155
 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 */
 162
 163 #elif defined(HAVE_LIBSTATGRAB)
 164 /* no variables needed */
 165 /* #endif  HAVE_LIBSTATGRAB */
 166
 167 #elif defined(HAVE_PERFSTAT)
 168 static perfstat_cpu_t *perfcpu;
 169 static int numcpu;
 170 static int pnumcpu;
 171 #endif /* HAVE_PERFSTAT */
 172
 173 static value_to_rate_state_t *percents = NULL;
 174 static gauge_t agg_percents[CPU_SUBMIT_MAX] = {
 175         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 176
 177 };
 178 static int percents_cells = 0;
 179 static int cpu_count = 0;
 180
 181
 182 static _Bool report_by_cpu = 1;
 183 static _Bool report_percent = 0;
 184 static _Bool report_active = 0;
 185
 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);
 193
 194
 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                 if (!report_by_cpu)
 200                         report_percent = 1;
 201         }
 202         if (strcasecmp (key, "ValuesPercentage") == 0)
 203                 report_percent = IS_TRUE (value) ? 1 : 0;
 204         if (strcasecmp (key, "ReportActive") == 0)
 205                 report_active = IS_TRUE (value) ? 1 : 0;
 206         return (-1);
 207 }
 208
 209 static int cpu_states_grow (void)
 210 {
 211   void *tmp;
 212   int size;
 213   int i;
 214
 215   size = cpu_count * CPU_SUBMIT_MAX; /* always alloc for all states */
 216
 217   if (size <= 0)
 218           return 0;
 219
 220   if (percents_cells >= size)
 221           return 0;
 222
 223   if (percents == NULL) {
 224           percents = malloc(size * sizeof(*percents));
 225           if (percents == NULL)
 226                   return -1;
 227           for (i = 0; i < size; i++)
 228                   memset(&percents[i], 0, sizeof(*percents));
 229           percents_cells = size;
 230           return 0;
 231   }
 232
 233   tmp = realloc(percents, size * sizeof(*percents));
 234
 235   if (tmp == NULL) {
 236           ERROR ("cpu plugin: could not reserve enough space to hold states");
 237           percents = NULL;
 238           return -1;
 239   }
 240
 241   for (i = percents_cells; i < size; i++)
 242           memset(&percents[i], 0, sizeof(*percents));
 243
 244   percents = tmp;
 245   percents_cells = size;
 246   return 0;
 247 } /* cpu_states_grow */
 248
 249
 250 static int init (void)
 251 {
 252 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 253         kern_return_t status;
 254
 255         port_host = mach_host_self ();
 256
 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         }
 264
 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");
 267
 268         cpu_temp_retry_max = 86400 / CDTIME_T_TO_TIME_T (plugin_get_interval ());
 269 /* #endif PROCESSOR_CPU_LOAD_INFO */
 270
 271 #elif defined(HAVE_LIBKSTAT)
 272         kstat_t *ksp_chain;
 273
 274         numcpu = 0;
 275
 276         if (kc == NULL)
 277                 return (-1);
 278
 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 */
 286
 287 #elif CAN_USE_SYSCTL
 288         size_t numcpu_size;
 289         int mib[2] = {CTL_HW, HW_NCPU};
 290         int status;
 291
 292         numcpu = 0;
 293         numcpu_size = sizeof (numcpu);
 294
 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 */
 305
 306 #elif defined (HAVE_SYSCTLBYNAME)
 307         size_t numcpu_size;
 308
 309         numcpu_size = sizeof (numcpu);
 310
 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         }
 318
 319 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
 320         numcpu_size = sizeof (maxcpu);
 321
 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 */
 334
 335 #elif defined(HAVE_LIBSTATGRAB)
 336         /* nothing to initialize */
 337 /* #endif HAVE_LIBSTATGRAB */
 338
 339 #elif defined(HAVE_PERFSTAT)
 340         /* nothing to initialize */
 341 #endif /* HAVE_PERFSTAT */
 342
 343         return (0);
 344 } /* int init */
 345
 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;
 350
 351         memcpy(&values[0], &value, sizeof(value));
 352
 353         vl.values = values;
 354         vl.values_len = 1;
 355
 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));
 361
 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 }
 368
 369 static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
 370 {
 371         value_t value;
 372
 373         value.gauge = percent;
 374         submit_value (cpu_num, cpu_state, "percent", value);
 375 }
 376
 377 static void submit_derive(int cpu_num, int cpu_state, derive_t derive)
 378 {
 379         value_t value;
 380
 381         value.derive = derive;
 382         submit_value (cpu_num, cpu_state, "cpu", value);
 383 }
 384
 385 static void submit_flush (void)
 386 {
 387         int i = 0;
 388
 389         if (report_by_cpu) {
 390                 cpu_count = 0;
 391                 return;
 392         }
 393
 394         for (i = 0; i < CPU_SUBMIT_MAX; i++) {
 395                 if (agg_percents[i] == -1)
 396                         continue;
 397
 398                 submit_percent(-1, i, agg_percents[i] / cpu_count);
 399                 agg_percents[i] = -1;
 400         }
 401         cpu_count = 0;
 402 }
 403
 404 static void submit (int cpu_num, derive_t *derives)
 405 {
 406
 407         int i = 0;
 408
 409         if (!report_percent && report_by_cpu) {
 410                 derive_t cpu_active = 0;
 411                 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++)
 412                 {
 413                         if (derives[i] == -1)
 414                                 continue;
 415
 416                         if (i != CPU_SUBMIT_IDLE)
 417                                 cpu_active += derives[i];
 418
 419                         submit_derive(cpu_num, i, derives[i]);
 420                 }
 421                 if (report_active)
 422                         submit_derive(cpu_num, CPU_SUBMIT_ACTIVE, cpu_active);
 423         }
 424         else /* we are reporting percents */
 425         {
 426                 cdtime_t cdt;
 427                 gauge_t percent;
 428                 gauge_t cpu_total = 0;
 429                 gauge_t cpu_active = 0;
 430                 gauge_t local_rates[CPU_SUBMIT_MAX];
 431
 432                 cpu_count++;
 433                 if (cpu_states_grow())
 434                         return;
 435
 436                 memset(local_rates, 0, sizeof(local_rates));
 437
 438                 cdt = cdtime();
 439                 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++) {
 440                         value_t rate;
 441                         int index;
 442
 443                         if (derives[i] == -1)
 444                                 continue;
 445
 446                         index = (cpu_num * CPU_SUBMIT_MAX) + i;
 447                         if (value_to_rate(&rate, derives[i], &percents[index],
 448                                           DS_TYPE_DERIVE, cdt) != 0) {
 449                                 local_rates[i] = -1;
 450                                 continue;
 451                         }
 452
 453                         local_rates[i] = rate.gauge;
 454                         cpu_total += rate.gauge;
 455                         if (i != CPU_SUBMIT_IDLE)
 456                                 cpu_active += rate.gauge;
 457                 }
 458                 if (cpu_total == 0.0)
 459                         return;
 460
 461                 if (report_active)
 462                         local_rates[CPU_SUBMIT_ACTIVE] = cpu_active;
 463
 464                 for (i = 0; i < CPU_SUBMIT_MAX; i++) {
 465                         if (local_rates[i] == -1)
 466                                 continue;
 467
 468                         percent = (local_rates[i] / cpu_total) * 100;
 469                         if (report_by_cpu)
 470                                 submit_percent (cpu_num, i, percent);
 471                         else {
 472                                 if (agg_percents[i] == -1)
 473                                         agg_percents[i] = percent;
 474                                 else
 475                                         agg_percents[i] += percent;
 476                         }
 477
 478                 }
 479         }
 480 }
 481
 482 static int cpu_read (void)
 483 {
 484 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 485         int cpu;
 486
 487         kern_return_t status;
 488
 489 #if PROCESSOR_CPU_LOAD_INFO
 490         processor_cpu_load_info_data_t cpu_info;
 491         mach_msg_type_number_t         cpu_info_len;
 492 #endif
 493 #if PROCESSOR_TEMPERATURE
 494         processor_info_data_t          cpu_temp;
 495         mach_msg_type_number_t         cpu_temp_len;
 496 #endif
 497
 498         host_t cpu_host;
 499
 500         for (cpu = 0; cpu < cpu_list_len; cpu++)
 501         {
 502 #if PROCESSOR_CPU_LOAD_INFO
 503                 derive_t derives[CPU_SUBMIT_MAX] = {
 504                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 505                 };
 506                 memset(derives, -1, sizeof(derives));
 507                 cpu_host = 0;
 508                 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
 509
 510                 if ((status = processor_info (cpu_list[cpu],
 511                                                 PROCESSOR_CPU_LOAD_INFO, &cpu_host,
 512                                                 (processor_info_t) &cpu_info, &cpu_info_len)) != KERN_SUCCESS)
 513                 {
 514                         ERROR ("cpu plugin: processor_info failed with status %i", (int) status);
 515                         continue;
 516                 }
 517
 518                 if (cpu_info_len < CPU_STATE_MAX)
 519                 {
 520                         ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
 521                         continue;
 522                 }
 523
 524                 derives[CPU_SUBMIT_USER] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER];
 525                 derives[CPU_SUBMIT_NICE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE];
 526                 derives[CPU_SUBMIT_SYSTEM] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM];
 527                 derives[CPU_SUBMIT_IDLE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE];
 528                 submit (cpu, derives);
 529
 530 #endif /* PROCESSOR_CPU_LOAD_INFO */
 531 #if PROCESSOR_TEMPERATURE
 532                 /*
 533                  * Not all Apple computers do have this ability. To minimize
 534                  * the messages sent to the syslog we do an exponential
 535                  * stepback if `processor_info' fails. We still try ~once a day
 536                  * though..
 537                  */
 538                 if (cpu_temp_retry_counter > 0)
 539                 {
 540                         cpu_temp_retry_counter--;
 541                         continue;
 542                 }
 543
 544                 cpu_temp_len = PROCESSOR_INFO_MAX;
 545
 546                 status = processor_info (cpu_list[cpu],
 547                                 PROCESSOR_TEMPERATURE,
 548                                 &cpu_host,
 549                                 cpu_temp, &cpu_temp_len);
 550                 if (status != KERN_SUCCESS)
 551                 {
 552                         ERROR ("cpu plugin: processor_info failed: %s",
 553                                         mach_error_string (status));
 554
 555                         cpu_temp_retry_counter = cpu_temp_retry_step;
 556                         cpu_temp_retry_step *= 2;
 557                         if (cpu_temp_retry_step > cpu_temp_retry_max)
 558                                 cpu_temp_retry_step = cpu_temp_retry_max;
 559
 560                         continue;
 561                 }
 562
 563                 if (cpu_temp_len != 1)
 564                 {
 565                         DEBUG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
 566                                         (int) cpu_temp_len);
 567                         continue;
 568                 }
 569
 570                 cpu_temp_retry_counter = 0;
 571                 cpu_temp_retry_step    = 1;
 572 #endif /* PROCESSOR_TEMPERATURE */
 573         }
 574         submit_flush ();
 575 /* #endif PROCESSOR_CPU_LOAD_INFO */
 576
 577 #elif defined(KERNEL_LINUX)
 578         int cpu;
 579         FILE *fh;
 580         char buf[1024];
 581
 582         char *fields[9];
 583         int numfields;
 584
 585         if ((fh = fopen ("/proc/stat", "r")) == NULL)
 586         {
 587                 char errbuf[1024];
 588                 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
 589                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 590                 return (-1);
 591         }
 592
 593         while (fgets (buf, 1024, fh) != NULL)
 594         {
 595                 derive_t derives[CPU_SUBMIT_MAX] = {
 596                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 597                 };
 598
 599                 if (strncmp (buf, "cpu", 3))
 600                         continue;
 601                 if ((buf[3] < '0') || (buf[3] > '9'))
 602                         continue;
 603
 604                 numfields = strsplit (buf, fields, 9);
 605                 if (numfields < 5)
 606                         continue;
 607
 608                 cpu = atoi (fields[0] + 3);
 609                 derives[CPU_SUBMIT_USER] = atoll(fields[1]);
 610                 derives[CPU_SUBMIT_NICE] = atoll(fields[2]);
 611                 derives[CPU_SUBMIT_SYSTEM] = atoll(fields[3]);
 612                 derives[CPU_SUBMIT_IDLE] = atoll(fields[4]);
 613
 614                 if (numfields >= 8)
 615                 {
 616                         derives[CPU_SUBMIT_WAIT] = atoll(fields[5]);
 617                         derives[CPU_SUBMIT_INTERRUPT] = atoll(fields[6]);
 618                         derives[CPU_SUBMIT_SOFTIRQ] = atoll(fields[6]);
 619
 620                         if (numfields >= 9)
 621                                 derives[CPU_SUBMIT_STEAL] = atoll(fields[8]);
 622                 }
 623                 submit(cpu, derives);
 624         }
 625         submit_flush();
 626
 627         fclose (fh);
 628 /* #endif defined(KERNEL_LINUX) */
 629
 630 #elif defined(HAVE_LIBKSTAT)
 631         int cpu;
 632         static cpu_stat_t cs;
 633
 634         if (kc == NULL)
 635                 return (-1);
 636
 637         for (cpu = 0; cpu < numcpu; cpu++)
 638         {
 639                 derive_t derives[CPU_SUBMIT_MAX] = {
 640                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 641                 };
 642
 643                 if (kstat_read (kc, ksp[cpu], &cs) == -1)
 644                         continue; /* error message? */
 645
 646                 memset(derives, -1, sizeof(derives));
 647                 derives[CPU_SUBMIT_IDLE] = cs.cpu_sysinfo.cpu[CPU_IDLE];
 648                 derives[CPU_SUBMIT_USER] = cs.cpu_sysinfo.cpu[CPU_USER];
 649                 derives[CPU_SUBMIT_SYSTEM] = cs.cpu_sysinfo.cpu[CPU_KERNEL];
 650                 derives[CPU_SUBMIT_WAIT] = cs.cpu_sysinfo.cpu[CPU_WAIT];
 651                 submit (ksp[cpu]->ks_instance, derives);
 652         }
 653         submit_flush ();
 654 /* #endif defined(HAVE_LIBKSTAT) */
 655
 656 #elif CAN_USE_SYSCTL
 657         uint64_t cpuinfo[numcpu][CPUSTATES];
 658         size_t cpuinfo_size;
 659         int status;
 660         int i;
 661
 662         if (numcpu < 1)
 663         {
 664                 ERROR ("cpu plugin: Could not determine number of "
 665                                 "installed CPUs using sysctl(3).");
 666                 return (-1);
 667         }
 668
 669         memset (cpuinfo, 0, sizeof (cpuinfo));
 670
 671 #if defined(KERN_CPTIME2)
 672         if (numcpu > 1) {
 673                 for (i = 0; i < numcpu; i++) {
 674                         int mib[] = {CTL_KERN, KERN_CPTIME2, i};
 675
 676                         cpuinfo_size = sizeof (cpuinfo[0]);
 677
 678                         status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 679                                         cpuinfo[i], &cpuinfo_size, NULL, 0);
 680                         if (status == -1) {
 681                                 char errbuf[1024];
 682                                 ERROR ("cpu plugin: sysctl failed: %s.",
 683                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 684                                 return (-1);
 685                         }
 686                 }
 687         }
 688         else
 689 #endif /* defined(KERN_CPTIME2) */
 690         {
 691                 int mib[] = {CTL_KERN, KERN_CPTIME};
 692                 long cpuinfo_tmp[CPUSTATES];
 693
 694                 cpuinfo_size = sizeof(cpuinfo_tmp);
 695
 696                 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 697                                         &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
 698                 if (status == -1)
 699                 {
 700                         char errbuf[1024];
 701                         ERROR ("cpu plugin: sysctl failed: %s.",
 702                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 703                         return (-1);
 704                 }
 705
 706                 for(i = 0; i < CPUSTATES; i++) {
 707                         cpuinfo[0][i] = cpuinfo_tmp[i];
 708                 }
 709         }
 710
 711         for (i = 0; i < numcpu; i++) {
 712                 derive_t derives[CPU_SUBMIT_MAX] = {
 713                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 714                 };
 715
 716                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 717                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 718                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 719                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 720                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 721                 submit(i, derives);
 722         }
 723         submit_flush();
 724 /* #endif CAN_USE_SYSCTL */
 725 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES)
 726         long cpuinfo[maxcpu][CPUSTATES];
 727         size_t cpuinfo_size;
 728         int i;
 729
 730         memset (cpuinfo, 0, sizeof (cpuinfo));
 731
 732         cpuinfo_size = sizeof (cpuinfo);
 733         if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 734         {
 735                 char errbuf[1024];
 736                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 737                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 738                 return (-1);
 739         }
 740
 741         for (i = 0; i < numcpu; i++) {
 742                 derive_t derives[CPU_SUBMIT_MAX] = {
 743                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 744                 };
 745
 746                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 747                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 748                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 749                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 750                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 751                 submit(i, derives);
 752         }
 753         submit_flush();
 754
 755 /* #endif HAVE_SYSCTL_KERN_CP_TIMES */
 756 #elif defined(HAVE_SYSCTLBYNAME)
 757         long cpuinfo[CPUSTATES];
 758         size_t cpuinfo_size;
 759         derive_t derives[CPU_SUBMIT_MAX] = {
 760                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 761         };
 762
 763         cpuinfo_size = sizeof (cpuinfo);
 764
 765         if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 766         {
 767                 char errbuf[1024];
 768                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 769                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 770                 return (-1);
 771         }
 772
 773         derives[CPU_SUBMIT_USER] = cpuinfo[CP_USER];
 774         derives[CPU_SUBMIT_SYSTEM] = cpuinfo[CP_SYS];
 775         derives[CPU_SUBMIT_NICE] = cpuinfo[CP_NICE];
 776         derives[CPU_SUBMIT_IDLE] = cpuinfo[CP_IDLE];
 777         derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[CP_INTR];
 778         submit(0, derives);
 779         submit_flush();
 780
 781 /* #endif HAVE_SYSCTLBYNAME */
 782
 783 #elif defined(HAVE_LIBSTATGRAB)
 784         sg_cpu_stats *cs;
 785         derive_t derives[CPU_SUBMIT_MAX] = {
 786                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 787         };
 788         cs = sg_get_cpu_stats ();
 789
 790         if (cs == NULL)
 791         {
 792                 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
 793                 return (-1);
 794         }
 795
 796         derives[CPU_SUBMIT_IDLE] = (derive_t) cs->idle;
 797         derives[CPU_SUBMIT_NICE] = (derive_t) cs->nice;
 798         derives[CPU_SUBMIT_SWAP] = (derive_t) cs->swap;
 799         derives[CPU_SUBMIT_SYSTEM] = (derive_t) cs->kernel;
 800         derives[CPU_SUBMIT_USER] = (derive_t) cs->user;
 801         derives[CPU_SUBMIT_WAIT] = (derive_t) cs->iowait;
 802         submit(0, derives);
 803         submit_flush();
 804 /* #endif HAVE_LIBSTATGRAB */
 805
 806 #elif defined(HAVE_PERFSTAT)
 807         perfstat_id_t id;
 808         int i, cpus;
 809
 810         numcpu =  perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
 811         if(numcpu == -1)
 812         {
 813                 char errbuf[1024];
 814                 WARNING ("cpu plugin: perfstat_cpu: %s",
 815                         sstrerror (errno, errbuf, sizeof (errbuf)));
 816                 return (-1);
 817         }
 818
 819         if (pnumcpu != numcpu || perfcpu == NULL)
 820         {
 821                 if (perfcpu != NULL)
 822                         free(perfcpu);
 823                 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
 824         }
 825         pnumcpu = numcpu;
 826
 827         id.name[0] = '\0';
 828         if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
 829         {
 830                 char errbuf[1024];
 831                 WARNING ("cpu plugin: perfstat_cpu: %s",
 832                         sstrerror (errno, errbuf, sizeof (errbuf)));
 833                 return (-1);
 834         }
 835
 836         for (i = 0; i < cpus; i++)
 837         {
 838                 derive_t derives[CPU_SUBMIT_MAX] = {
 839                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 840                 };
 841                 derives[CPU_SUBMIT_IDLE] = perfcpu[i].idle;
 842                 derives[CPU_SUBMIT_SYSTEM] = perfcpu[i].sys;
 843                 derives[CPU_SUBMIT_USER] = perfcpu[i].user;
 844                 derives[CPU_SUBMIT_WAIT] = perfcpu[i].wait;
 845                 submit(i, derives);
 846         }
 847         submit_flush();
 848 #endif /* HAVE_PERFSTAT */
 849
 850         return (0);
 851 }
 852
 853 void module_register (void)
 854 {
 855         plugin_register_init ("cpu", init);
 856         plugin_register_config ("cpu", cpu_config, config_keys, config_keys_num);
 857         plugin_register_read ("cpu", cpu_read);
 858 } /* void module_register */