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