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 collectd.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 *values = NULL;
 174 static gauge_t agg_values[CPU_SUBMIT_MAX] = {
 175         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 176
 177 };
 178 static int cpu_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         }
 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 }
 207
 208 static int cpu_states_grow (void)
 209 {
 210   void *tmp;
 211   int size;
 212   int i;
 213
 214   size = cpu_count * CPU_SUBMIT_MAX; /* always alloc for all states */
 215
 216   if (size <= 0)
 217           return 0;
 218
 219   if (cpu_cells >= size)
 220           return 0;
 221
 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   }
 231
 232   tmp = realloc(values, size * sizeof(*values));
 233
 234   if (tmp == NULL) {
 235           ERROR ("cpu plugin: could not reserve enough space to hold states");
 236           values = NULL;
 237           return -1;
 238   }
 239
 240   values = tmp;
 241
 242   for (i = cpu_cells ; i < size; i++)
 243           memset(&values[i], 0, sizeof(*values));
 244
 245   cpu_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         int cpu_submit_max = CPU_SUBMIT_MAX;
 389
 390         if (report_by_cpu) {
 391                 cpu_count = 0;
 392                 return;
 393         }
 394
 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;
 402
 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 }
 411
 412 static void submit (int cpu_num, derive_t *derives)
 413 {
 414
 415         int i = 0;
 416         int cpu_submit_max = CPU_SUBMIT_MAX;
 417
 418         if (report_active)
 419                 cpu_submit_max = CPU_SUBMIT_MAX;
 420         else
 421                 cpu_submit_max = CPU_SUBMIT_ACTIVE;
 422
 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;
 429
 430                         if (i != CPU_SUBMIT_IDLE)
 431                                 cpu_active += derives[i];
 432
 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];
 444
 445                 cpu_count++;
 446                 if (cpu_states_grow())
 447                         return;
 448
 449                 memset(local_rates, 0, sizeof(local_rates));
 450
 451                 cdt = cdtime();
 452                 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++) {
 453                         if (report_percent) {
 454                                 value_t rate;
 455                                 int index;
 456
 457                                 if (derives[i] == -1)
 458                                         continue;
 459
 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                                 }
 466
 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;
 480
 481                 if (report_active)
 482                         local_rates[CPU_SUBMIT_ACTIVE] = cpu_active;
 483
 484                 for (i = 0; i < cpu_submit_max; i++) {
 485                         if (local_rates[i] == -1)
 486                                 continue;
 487
 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 }
 508
 509 static int cpu_read (void)
 510 {
 511 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 512         int cpu;
 513
 514         kern_return_t status;
 515
 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
 524
 525         host_t cpu_host;
 526
 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;
 536
 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                 }
 544
 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                 }
 550
 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);
 556
 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                 }
 570
 571                 cpu_temp_len = PROCESSOR_INFO_MAX;
 572
 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));
 581
 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;
 586
 587                         continue;
 588                 }
 589
 590                 if (cpu_temp_len != 1)
 591                 {
 592                         DEBUG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
 593                                         (int) cpu_temp_len);
 594                         continue;
 595                 }
 596
 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 */
 603
 604 #elif defined(KERNEL_LINUX)
 605         int cpu;
 606         FILE *fh;
 607         char buf[1024];
 608
 609         char *fields[9];
 610         int numfields;
 611
 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         }
 619
 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                 };
 625
 626                 if (strncmp (buf, "cpu", 3))
 627                         continue;
 628                 if ((buf[3] < '0') || (buf[3] > '9'))
 629                         continue;
 630
 631                 numfields = strsplit (buf, fields, 9);
 632                 if (numfields < 5)
 633                         continue;
 634
 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]);
 640
 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[6]);
 646
 647                         if (numfields >= 9)
 648                                 derives[CPU_SUBMIT_STEAL] = atoll(fields[8]);
 649                 }
 650                 submit(cpu, derives);
 651         }
 652         submit_flush();
 653
 654         fclose (fh);
 655 /* #endif defined(KERNEL_LINUX) */
 656
 657 #elif defined(HAVE_LIBKSTAT)
 658         int cpu;
 659         static cpu_stat_t cs;
 660
 661         if (kc == NULL)
 662                 return (-1);
 663
 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                 };
 669
 670                 if (kstat_read (kc, ksp[cpu], &cs) == -1)
 671                         continue; /* error message? */
 672
 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) */
 682
 683 #elif CAN_USE_SYSCTL
 684         uint64_t cpuinfo[numcpu][CPUSTATES];
 685         size_t cpuinfo_size;
 686         int status;
 687         int i;
 688
 689         if (numcpu < 1)
 690         {
 691                 ERROR ("cpu plugin: Could not determine number of "
 692                                 "installed CPUs using sysctl(3).");
 693                 return (-1);
 694         }
 695
 696         memset (cpuinfo, 0, sizeof (cpuinfo));
 697
 698 #if defined(KERN_CPTIME2)
 699         if (numcpu > 1) {
 700                 for (i = 0; i < numcpu; i++) {
 701                         int mib[] = {CTL_KERN, KERN_CPTIME2, i};
 702
 703                         cpuinfo_size = sizeof (cpuinfo[0]);
 704
 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];
 720
 721                 cpuinfo_size = sizeof(cpuinfo_tmp);
 722
 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                 }
 732
 733                 for(i = 0; i < CPUSTATES; i++) {
 734                         cpuinfo[0][i] = cpuinfo_tmp[i];
 735                 }
 736         }
 737
 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                 };
 742
 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;
 756
 757         memset (cpuinfo, 0, sizeof (cpuinfo));
 758
 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         }
 767
 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                 };
 772
 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();
 781
 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         };
 789
 790         cpuinfo_size = sizeof (cpuinfo);
 791
 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         }
 799
 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();
 807
 808 /* #endif HAVE_SYSCTLBYNAME */
 809
 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 ();
 816
 817         if (cs == NULL)
 818         {
 819                 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
 820                 return (-1);
 821         }
 822
 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 */
 832
 833 #elif defined(HAVE_PERFSTAT)
 834         perfstat_id_t id;
 835         int i, cpus;
 836
 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         }
 845
 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;
 853
 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         }
 862
 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 */
 876
 877         return (0);
 878 }
 879
 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 */