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 (!report_percent)
 205                         report_by_cpu = 1;
 206         }
 207         if (strcasecmp (key, "ReportActive") == 0)
 208                 report_active = IS_TRUE (value) ? 1 : 0;
 209         return (-1);
 210 }
 211
 212 static int cpu_states_grow (void)
 213 {
 214   void *tmp;
 215   int size;
 216   int i;
 217
 218   size = cpu_count * CPU_SUBMIT_MAX; /* always alloc for all states */
 219
 220   if (size <= 0)
 221           return 0;
 222
 223   if (percents_cells >= size)
 224           return 0;
 225
 226   if (percents == NULL) {
 227           percents = malloc(size * sizeof(*percents));
 228           if (percents == NULL)
 229                   return -1;
 230           for (i = 0; i < size; i++)
 231                   memset(&percents[i], 0, sizeof(*percents));
 232           percents_cells = size;
 233           return 0;
 234   }
 235
 236   tmp = realloc(percents, size * sizeof(*percents));
 237
 238   if (tmp == NULL) {
 239           ERROR ("cpu plugin: could not reserve enough space to hold states");
 240           percents = NULL;
 241           return -1;
 242   }
 243
 244   for (i = percents_cells; i < size; i++)
 245           memset(&percents[i], 0, sizeof(*percents));
 246
 247   percents = tmp;
 248   percents_cells = size;
 249   return 0;
 250 } /* cpu_states_grow */
 251
 252
 253 static int init (void)
 254 {
 255 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 256         kern_return_t status;
 257
 258         port_host = mach_host_self ();
 259
 260         /* FIXME: Free `cpu_list' if it's not NULL */
 261         if ((status = host_processors (port_host, &cpu_list, &cpu_list_len)) != KERN_SUCCESS)
 262         {
 263                 ERROR ("cpu plugin: host_processors returned %i", (int) status);
 264                 cpu_list_len = 0;
 265                 return (-1);
 266         }
 267
 268         DEBUG ("host_processors returned %i %s", (int) cpu_list_len, cpu_list_len == 1 ? "processor" : "processors");
 269         INFO ("cpu plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
 270
 271         cpu_temp_retry_max = 86400 / CDTIME_T_TO_TIME_T (plugin_get_interval ());
 272 /* #endif PROCESSOR_CPU_LOAD_INFO */
 273
 274 #elif defined(HAVE_LIBKSTAT)
 275         kstat_t *ksp_chain;
 276
 277         numcpu = 0;
 278
 279         if (kc == NULL)
 280                 return (-1);
 281
 282         /* Solaris doesn't count linear.. *sigh* */
 283         for (numcpu = 0, ksp_chain = kc->kc_chain;
 284                         (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
 285                         ksp_chain = ksp_chain->ks_next)
 286                 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
 287                         ksp[numcpu++] = ksp_chain;
 288 /* #endif HAVE_LIBKSTAT */
 289
 290 #elif CAN_USE_SYSCTL
 291         size_t numcpu_size;
 292         int mib[2] = {CTL_HW, HW_NCPU};
 293         int status;
 294
 295         numcpu = 0;
 296         numcpu_size = sizeof (numcpu);
 297
 298         status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 299                         &numcpu, &numcpu_size, NULL, 0);
 300         if (status == -1)
 301         {
 302                 char errbuf[1024];
 303                 WARNING ("cpu plugin: sysctl: %s",
 304                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 305                 return (-1);
 306         }
 307 /* #endif CAN_USE_SYSCTL */
 308
 309 #elif defined (HAVE_SYSCTLBYNAME)
 310         size_t numcpu_size;
 311
 312         numcpu_size = sizeof (numcpu);
 313
 314         if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
 315         {
 316                 char errbuf[1024];
 317                 WARNING ("cpu plugin: sysctlbyname(hw.ncpu): %s",
 318                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 319                 return (-1);
 320         }
 321
 322 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
 323         numcpu_size = sizeof (maxcpu);
 324
 325         if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0)
 326         {
 327                 char errbuf[1024];
 328                 WARNING ("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s",
 329                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 330                 return (-1);
 331         }
 332 #else
 333         if (numcpu != 1)
 334                 NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
 335 #endif
 336 /* #endif HAVE_SYSCTLBYNAME */
 337
 338 #elif defined(HAVE_LIBSTATGRAB)
 339         /* nothing to initialize */
 340 /* #endif HAVE_LIBSTATGRAB */
 341
 342 #elif defined(HAVE_PERFSTAT)
 343         /* nothing to initialize */
 344 #endif /* HAVE_PERFSTAT */
 345
 346         return (0);
 347 } /* int init */
 348
 349 static void submit_value (int cpu_num, int cpu_state, const char *type, value_t value)
 350 {
 351         value_t values[1];
 352         value_list_t vl = VALUE_LIST_INIT;
 353
 354         memcpy(&values[0], &value, sizeof(value));
 355
 356         vl.values = values;
 357         vl.values_len = 1;
 358
 359         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 360         sstrncpy (vl.plugin, "cpu", sizeof (vl.plugin));
 361         sstrncpy (vl.type, type, sizeof (vl.type));
 362         sstrncpy (vl.type_instance, cpu_state_names[cpu_state],
 363                   sizeof (vl.type_instance));
 364
 365         if (cpu_num >= 0) {
 366                 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
 367                            "%i", cpu_num);
 368         }
 369         plugin_dispatch_values (&vl);
 370 }
 371
 372 static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
 373 {
 374         value_t value;
 375
 376         value.gauge = percent;
 377         submit_value (cpu_num, cpu_state, "percent", value);
 378 }
 379
 380 static void submit_derive(int cpu_num, int cpu_state, derive_t derive)
 381 {
 382         value_t value;
 383
 384         value.derive = derive;
 385         submit_value (cpu_num, cpu_state, "cpu", value);
 386 }
 387
 388 static void submit_flush (void)
 389 {
 390         int i = 0;
 391
 392         if (report_by_cpu) {
 393                 cpu_count = 0;
 394                 return;
 395         }
 396
 397         for (i = 0; i < CPU_SUBMIT_MAX; i++) {
 398                 if (agg_percents[i] == -1)
 399                         continue;
 400
 401                 submit_percent(-1, i, agg_percents[i] / cpu_count);
 402                 agg_percents[i] = -1;
 403         }
 404         cpu_count = 0;
 405 }
 406
 407 static void submit (int cpu_num, derive_t *derives)
 408 {
 409
 410         int i = 0;
 411
 412         if (!report_percent && report_by_cpu) {
 413                 derive_t cpu_active = 0;
 414                 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++)
 415                 {
 416                         if (derives[i] == -1)
 417                                 continue;
 418
 419                         if (i != CPU_SUBMIT_IDLE)
 420                                 cpu_active += derives[i];
 421
 422                         submit_derive(cpu_num, i, derives[i]);
 423                 }
 424                 if (report_active)
 425                         submit_derive(cpu_num, CPU_SUBMIT_ACTIVE, cpu_active);
 426         }
 427         else /* we are reporting percents */
 428         {
 429                 cdtime_t cdt;
 430                 gauge_t percent;
 431                 gauge_t cpu_total = 0;
 432                 gauge_t cpu_active = 0;
 433                 gauge_t local_rates[CPU_SUBMIT_MAX];
 434
 435                 cpu_count++;
 436                 if (cpu_states_grow())
 437                         return;
 438
 439                 memset(local_rates, 0, sizeof(local_rates));
 440
 441                 cdt = cdtime();
 442                 for (i = 0; i < CPU_SUBMIT_ACTIVE; i++) {
 443                         value_t rate;
 444                         int index;
 445
 446                         if (derives[i] == -1)
 447                                 continue;
 448
 449                         index = (cpu_num * CPU_SUBMIT_MAX) + i;
 450                         if (value_to_rate(&rate, derives[i], &percents[index],
 451                                           DS_TYPE_DERIVE, cdt) != 0) {
 452                                 local_rates[i] = -1;
 453                                 continue;
 454                         }
 455
 456                         local_rates[i] = rate.gauge;
 457                         cpu_total += rate.gauge;
 458                         if (i != CPU_SUBMIT_IDLE)
 459                                 cpu_active += rate.gauge;
 460                 }
 461                 if (cpu_total == 0.0)
 462                         return;
 463
 464                 if (report_active)
 465                         local_rates[CPU_SUBMIT_ACTIVE] = cpu_active;
 466
 467                 for (i = 0; i < CPU_SUBMIT_MAX; i++) {
 468                         if (local_rates[i] == -1)
 469                                 continue;
 470
 471                         percent = (local_rates[i] / cpu_total) * 100;
 472                         if (report_by_cpu)
 473                                 submit_percent (cpu_num, i, percent);
 474                         else {
 475                                 if (agg_percents[i] == -1)
 476                                         agg_percents[i] = percent;
 477                                 else
 478                                         agg_percents[i] += percent;
 479                         }
 480
 481                 }
 482         }
 483 }
 484
 485 static int cpu_read (void)
 486 {
 487 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 488         int cpu;
 489
 490         kern_return_t status;
 491
 492 #if PROCESSOR_CPU_LOAD_INFO
 493         processor_cpu_load_info_data_t cpu_info;
 494         mach_msg_type_number_t         cpu_info_len;
 495 #endif
 496 #if PROCESSOR_TEMPERATURE
 497         processor_info_data_t          cpu_temp;
 498         mach_msg_type_number_t         cpu_temp_len;
 499 #endif
 500
 501         host_t cpu_host;
 502
 503         for (cpu = 0; cpu < cpu_list_len; cpu++)
 504         {
 505 #if PROCESSOR_CPU_LOAD_INFO
 506                 derive_t derives[CPU_SUBMIT_MAX] = {
 507                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 508                 };
 509                 memset(derives, -1, sizeof(derives));
 510                 cpu_host = 0;
 511                 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
 512
 513                 if ((status = processor_info (cpu_list[cpu],
 514                                                 PROCESSOR_CPU_LOAD_INFO, &cpu_host,
 515                                                 (processor_info_t) &cpu_info, &cpu_info_len)) != KERN_SUCCESS)
 516                 {
 517                         ERROR ("cpu plugin: processor_info failed with status %i", (int) status);
 518                         continue;
 519                 }
 520
 521                 if (cpu_info_len < CPU_STATE_MAX)
 522                 {
 523                         ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
 524                         continue;
 525                 }
 526
 527                 derives[CPU_SUBMIT_USER] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER];
 528                 derives[CPU_SUBMIT_NICE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE];
 529                 derives[CPU_SUBMIT_SYSTEM] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM];
 530                 derives[CPU_SUBMIT_IDLE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE];
 531                 submit (cpu, derives);
 532
 533 #endif /* PROCESSOR_CPU_LOAD_INFO */
 534 #if PROCESSOR_TEMPERATURE
 535                 /*
 536                  * Not all Apple computers do have this ability. To minimize
 537                  * the messages sent to the syslog we do an exponential
 538                  * stepback if `processor_info' fails. We still try ~once a day
 539                  * though..
 540                  */
 541                 if (cpu_temp_retry_counter > 0)
 542                 {
 543                         cpu_temp_retry_counter--;
 544                         continue;
 545                 }
 546
 547                 cpu_temp_len = PROCESSOR_INFO_MAX;
 548
 549                 status = processor_info (cpu_list[cpu],
 550                                 PROCESSOR_TEMPERATURE,
 551                                 &cpu_host,
 552                                 cpu_temp, &cpu_temp_len);
 553                 if (status != KERN_SUCCESS)
 554                 {
 555                         ERROR ("cpu plugin: processor_info failed: %s",
 556                                         mach_error_string (status));
 557
 558                         cpu_temp_retry_counter = cpu_temp_retry_step;
 559                         cpu_temp_retry_step *= 2;
 560                         if (cpu_temp_retry_step > cpu_temp_retry_max)
 561                                 cpu_temp_retry_step = cpu_temp_retry_max;
 562
 563                         continue;
 564                 }
 565
 566                 if (cpu_temp_len != 1)
 567                 {
 568                         DEBUG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
 569                                         (int) cpu_temp_len);
 570                         continue;
 571                 }
 572
 573                 cpu_temp_retry_counter = 0;
 574                 cpu_temp_retry_step    = 1;
 575 #endif /* PROCESSOR_TEMPERATURE */
 576         }
 577         submit_flush ();
 578 /* #endif PROCESSOR_CPU_LOAD_INFO */
 579
 580 #elif defined(KERNEL_LINUX)
 581         int cpu;
 582         FILE *fh;
 583         char buf[1024];
 584
 585         char *fields[9];
 586         int numfields;
 587
 588         if ((fh = fopen ("/proc/stat", "r")) == NULL)
 589         {
 590                 char errbuf[1024];
 591                 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
 592                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 593                 return (-1);
 594         }
 595
 596         while (fgets (buf, 1024, fh) != NULL)
 597         {
 598                 derive_t derives[CPU_SUBMIT_MAX] = {
 599                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 600                 };
 601
 602                 if (strncmp (buf, "cpu", 3))
 603                         continue;
 604                 if ((buf[3] < '0') || (buf[3] > '9'))
 605                         continue;
 606
 607                 numfields = strsplit (buf, fields, 9);
 608                 if (numfields < 5)
 609                         continue;
 610
 611                 cpu = atoi (fields[0] + 3);
 612                 derives[CPU_SUBMIT_USER] = atoll(fields[1]);
 613                 derives[CPU_SUBMIT_NICE] = atoll(fields[2]);
 614                 derives[CPU_SUBMIT_SYSTEM] = atoll(fields[3]);
 615                 derives[CPU_SUBMIT_IDLE] = atoll(fields[4]);
 616
 617                 if (numfields >= 8)
 618                 {
 619                         derives[CPU_SUBMIT_WAIT] = atoll(fields[5]);
 620                         derives[CPU_SUBMIT_INTERRUPT] = atoll(fields[6]);
 621                         derives[CPU_SUBMIT_SOFTIRQ] = atoll(fields[6]);
 622
 623                         if (numfields >= 9)
 624                                 derives[CPU_SUBMIT_STEAL] = atoll(fields[8]);
 625                 }
 626                 submit(cpu, derives);
 627         }
 628         submit_flush();
 629
 630         fclose (fh);
 631 /* #endif defined(KERNEL_LINUX) */
 632
 633 #elif defined(HAVE_LIBKSTAT)
 634         int cpu;
 635         static cpu_stat_t cs;
 636
 637         if (kc == NULL)
 638                 return (-1);
 639
 640         for (cpu = 0; cpu < numcpu; cpu++)
 641         {
 642                 derive_t derives[CPU_SUBMIT_MAX] = {
 643                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 644                 };
 645
 646                 if (kstat_read (kc, ksp[cpu], &cs) == -1)
 647                         continue; /* error message? */
 648
 649                 memset(derives, -1, sizeof(derives));
 650                 derives[CPU_SUBMIT_IDLE] = cs.cpu_sysinfo.cpu[CPU_IDLE];
 651                 derives[CPU_SUBMIT_USER] = cs.cpu_sysinfo.cpu[CPU_USER];
 652                 derives[CPU_SUBMIT_SYSTEM] = cs.cpu_sysinfo.cpu[CPU_KERNEL];
 653                 derives[CPU_SUBMIT_WAIT] = cs.cpu_sysinfo.cpu[CPU_WAIT];
 654                 submit (ksp[cpu]->ks_instance, derives);
 655         }
 656         submit_flush ();
 657 /* #endif defined(HAVE_LIBKSTAT) */
 658
 659 #elif CAN_USE_SYSCTL
 660         uint64_t cpuinfo[numcpu][CPUSTATES];
 661         size_t cpuinfo_size;
 662         int status;
 663         int i;
 664
 665         if (numcpu < 1)
 666         {
 667                 ERROR ("cpu plugin: Could not determine number of "
 668                                 "installed CPUs using sysctl(3).");
 669                 return (-1);
 670         }
 671
 672         memset (cpuinfo, 0, sizeof (cpuinfo));
 673
 674 #if defined(KERN_CPTIME2)
 675         if (numcpu > 1) {
 676                 for (i = 0; i < numcpu; i++) {
 677                         int mib[] = {CTL_KERN, KERN_CPTIME2, i};
 678
 679                         cpuinfo_size = sizeof (cpuinfo[0]);
 680
 681                         status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 682                                         cpuinfo[i], &cpuinfo_size, NULL, 0);
 683                         if (status == -1) {
 684                                 char errbuf[1024];
 685                                 ERROR ("cpu plugin: sysctl failed: %s.",
 686                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 687                                 return (-1);
 688                         }
 689                 }
 690         }
 691         else
 692 #endif /* defined(KERN_CPTIME2) */
 693         {
 694                 int mib[] = {CTL_KERN, KERN_CPTIME};
 695                 long cpuinfo_tmp[CPUSTATES];
 696
 697                 cpuinfo_size = sizeof(cpuinfo_tmp);
 698
 699                 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 700                                         &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
 701                 if (status == -1)
 702                 {
 703                         char errbuf[1024];
 704                         ERROR ("cpu plugin: sysctl failed: %s.",
 705                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 706                         return (-1);
 707                 }
 708
 709                 for(i = 0; i < CPUSTATES; i++) {
 710                         cpuinfo[0][i] = cpuinfo_tmp[i];
 711                 }
 712         }
 713
 714         for (i = 0; i < numcpu; i++) {
 715                 derive_t derives[CPU_SUBMIT_MAX] = {
 716                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 717                 };
 718
 719                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 720                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 721                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 722                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 723                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 724                 submit(i, derives);
 725         }
 726         submit_flush();
 727 /* #endif CAN_USE_SYSCTL */
 728 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES)
 729         long cpuinfo[maxcpu][CPUSTATES];
 730         size_t cpuinfo_size;
 731         int i;
 732
 733         memset (cpuinfo, 0, sizeof (cpuinfo));
 734
 735         cpuinfo_size = sizeof (cpuinfo);
 736         if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 737         {
 738                 char errbuf[1024];
 739                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 740                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 741                 return (-1);
 742         }
 743
 744         for (i = 0; i < numcpu; i++) {
 745                 derive_t derives[CPU_SUBMIT_MAX] = {
 746                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 747                 };
 748
 749                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 750                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 751                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 752                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 753                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 754                 submit(i, derives);
 755         }
 756         submit_flush();
 757
 758 /* #endif HAVE_SYSCTL_KERN_CP_TIMES */
 759 #elif defined(HAVE_SYSCTLBYNAME)
 760         long cpuinfo[CPUSTATES];
 761         size_t cpuinfo_size;
 762         derive_t derives[CPU_SUBMIT_MAX] = {
 763                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 764         };
 765
 766         cpuinfo_size = sizeof (cpuinfo);
 767
 768         if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 769         {
 770                 char errbuf[1024];
 771                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 772                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 773                 return (-1);
 774         }
 775
 776         derives[CPU_SUBMIT_USER] = cpuinfo[CP_USER];
 777         derives[CPU_SUBMIT_SYSTEM] = cpuinfo[CP_SYS];
 778         derives[CPU_SUBMIT_NICE] = cpuinfo[CP_NICE];
 779         derives[CPU_SUBMIT_IDLE] = cpuinfo[CP_IDLE];
 780         derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[CP_INTR];
 781         submit(0, derives);
 782         submit_flush();
 783
 784 /* #endif HAVE_SYSCTLBYNAME */
 785
 786 #elif defined(HAVE_LIBSTATGRAB)
 787         sg_cpu_stats *cs;
 788         derive_t derives[CPU_SUBMIT_MAX] = {
 789                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 790         };
 791         cs = sg_get_cpu_stats ();
 792
 793         if (cs == NULL)
 794         {
 795                 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
 796                 return (-1);
 797         }
 798
 799         derives[CPU_SUBMIT_IDLE] = (derive_t) cs->idle;
 800         derives[CPU_SUBMIT_NICE] = (derive_t) cs->nice;
 801         derives[CPU_SUBMIT_SWAP] = (derive_t) cs->swap;
 802         derives[CPU_SUBMIT_SYSTEM] = (derive_t) cs->kernel;
 803         derives[CPU_SUBMIT_USER] = (derive_t) cs->user;
 804         derives[CPU_SUBMIT_WAIT] = (derive_t) cs->iowait;
 805         submit(0, derives);
 806         submit_flush();
 807 /* #endif HAVE_LIBSTATGRAB */
 808
 809 #elif defined(HAVE_PERFSTAT)
 810         perfstat_id_t id;
 811         int i, cpus;
 812
 813         numcpu =  perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
 814         if(numcpu == -1)
 815         {
 816                 char errbuf[1024];
 817                 WARNING ("cpu plugin: perfstat_cpu: %s",
 818                         sstrerror (errno, errbuf, sizeof (errbuf)));
 819                 return (-1);
 820         }
 821
 822         if (pnumcpu != numcpu || perfcpu == NULL)
 823         {
 824                 if (perfcpu != NULL)
 825                         free(perfcpu);
 826                 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
 827         }
 828         pnumcpu = numcpu;
 829
 830         id.name[0] = '\0';
 831         if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
 832         {
 833                 char errbuf[1024];
 834                 WARNING ("cpu plugin: perfstat_cpu: %s",
 835                         sstrerror (errno, errbuf, sizeof (errbuf)));
 836                 return (-1);
 837         }
 838
 839         for (i = 0; i < cpus; i++)
 840         {
 841                 derive_t derives[CPU_SUBMIT_MAX] = {
 842                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 843                 };
 844                 derives[CPU_SUBMIT_IDLE] = perfcpu[i].idle;
 845                 derives[CPU_SUBMIT_SYSTEM] = perfcpu[i].sys;
 846                 derives[CPU_SUBMIT_USER] = perfcpu[i].user;
 847                 derives[CPU_SUBMIT_WAIT] = perfcpu[i].wait;
 848                 submit(i, derives);
 849         }
 850         submit_flush();
 851 #endif /* HAVE_PERFSTAT */
 852
 853         return (0);
 854 }
 855
 856 void module_register (void)
 857 {
 858         plugin_register_init ("cpu", init);
 859         plugin_register_config ("cpu", cpu_config, config_keys, config_keys_num);
 860         plugin_register_read ("cpu", cpu_read);
 861 } /* void module_register */