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 1
  90 #define CPU_SUBMIT_SYSTEM 2
  91 #define CPU_SUBMIT_WAIT 3
  92 #define CPU_SUBMIT_NICE 4
  93 #define CPU_SUBMIT_SWAP 5
  94 #define CPU_SUBMIT_INTERRUPT 6
  95 #define CPU_SUBMIT_SOFTIRQ 7
  96 #define CPU_SUBMIT_STEAL 8
  97 #define CPU_SUBMIT_IDLE 9
  98 #define CPU_SUBMIT_ACTIVE 10
  99 #define CPU_SUBMIT_MAX 11
 100 #define CPU_SUBMIT_FLUSH -1
 101
 102 #if HAVE_STATGRAB_H
 103 # include <statgrab.h>
 104 #endif
 105
 106 # ifdef HAVE_PERFSTAT
 107 #  include <sys/protosw.h>
 108 #  include <libperfstat.h>
 109 # endif /* HAVE_PERFSTAT */
 110
 111 #if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT \
 112         && !CAN_USE_SYSCTL && !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB && !HAVE_PERFSTAT
 113 # error "No applicable input method."
 114 #endif
 115
 116 static const char *cpu_state_names[] = {
 117         "none",
 118         "user",
 119         "system",
 120         "wait",
 121         "nice",
 122         "swap",
 123         "interrupt",
 124         "softirq",
 125         "steal",
 126         "idle",
 127         "active"
 128 };
 129
 130 #ifdef PROCESSOR_CPU_LOAD_INFO
 131 static mach_port_t port_host;
 132 static processor_port_array_t cpu_list;
 133 static mach_msg_type_number_t cpu_list_len;
 134
 135 #if PROCESSOR_TEMPERATURE
 136 static int cpu_temp_retry_counter = 0;
 137 static int cpu_temp_retry_step    = 1;
 138 static int cpu_temp_retry_max     = 1;
 139 #endif /* PROCESSOR_TEMPERATURE */
 140 /* #endif PROCESSOR_CPU_LOAD_INFO */
 141
 142 #elif defined(KERNEL_LINUX)
 143 /* no variables needed */
 144 /* #endif KERNEL_LINUX */
 145
 146 #elif defined(HAVE_LIBKSTAT)
 147 /* colleague tells me that Sun doesn't sell systems with more than 100 or so CPUs.. */
 148 # define MAX_NUMCPU 256
 149 extern kstat_ctl_t *kc;
 150 static kstat_t *ksp[MAX_NUMCPU];
 151 static int numcpu;
 152 /* #endif HAVE_LIBKSTAT */
 153
 154 #elif CAN_USE_SYSCTL
 155 static int numcpu;
 156 /* #endif CAN_USE_SYSCTL */
 157
 158 #elif defined(HAVE_SYSCTLBYNAME)
 159 static int numcpu;
 160 #  ifdef HAVE_SYSCTL_KERN_CP_TIMES
 161 static int maxcpu;
 162 #  endif /* HAVE_SYSCTL_KERN_CP_TIMES */
 163 /* #endif HAVE_SYSCTLBYNAME */
 164
 165 #elif defined(HAVE_LIBSTATGRAB)
 166 /* no variables needed */
 167 /* #endif  HAVE_LIBSTATGRAB */
 168
 169 #elif defined(HAVE_PERFSTAT)
 170 static perfstat_cpu_t *perfcpu;
 171 static int numcpu;
 172 static int pnumcpu;
 173 #endif /* HAVE_PERFSTAT */
 174
 175 static gauge_t percents[CPU_SUBMIT_MAX] = {
 176         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 177 };
 178 int cpu_count = 0;
 179
 180 static _Bool report_by_cpu = 1;
 181 static _Bool report_percent = 0;
 182 static _Bool report_active = 0;
 183
 184 static const char *config_keys[] =
 185 {
 186         "ReportByCpu",
 187         "ReportActive",
 188         "ValuesPercentage"
 189 };
 190 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 191
 192 static int cpu_config (const char *key, const char *value)
 193 {
 194         if (strcasecmp (key, "ReportByCpu") == 0) {
 195                 report_by_cpu = IS_TRUE (value) ? 1 : 0;
 196                 if (!report_by_cpu)
 197                         report_percent = 1;
 198         }
 199         if (strcasecmp (key, "ValuesPercentage") == 0)
 200                 report_percent = IS_TRUE (value) ? 1 : 0;
 201         if (strcasecmp (key, "ReportActive") == 0)
 202                 report_active = IS_TRUE (value) ? 1 : 0;
 203         return (-1);
 204 }
 205
 206 static int init (void)
 207 {
 208 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 209         kern_return_t status;
 210
 211         port_host = mach_host_self ();
 212
 213         /* FIXME: Free `cpu_list' if it's not NULL */
 214         if ((status = host_processors (port_host, &cpu_list, &cpu_list_len)) != KERN_SUCCESS)
 215         {
 216                 ERROR ("cpu plugin: host_processors returned %i", (int) status);
 217                 cpu_list_len = 0;
 218                 return (-1);
 219         }
 220
 221         DEBUG ("host_processors returned %i %s", (int) cpu_list_len, cpu_list_len == 1 ? "processor" : "processors");
 222         INFO ("cpu plugin: Found %i processor%s.", (int) cpu_list_len, cpu_list_len == 1 ? "" : "s");
 223
 224         cpu_temp_retry_max = 86400 / CDTIME_T_TO_TIME_T (plugin_get_interval ());
 225 /* #endif PROCESSOR_CPU_LOAD_INFO */
 226
 227 #elif defined(HAVE_LIBKSTAT)
 228         kstat_t *ksp_chain;
 229
 230         numcpu = 0;
 231
 232         if (kc == NULL)
 233                 return (-1);
 234
 235         /* Solaris doesn't count linear.. *sigh* */
 236         for (numcpu = 0, ksp_chain = kc->kc_chain;
 237                         (numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
 238                         ksp_chain = ksp_chain->ks_next)
 239                 if (strncmp (ksp_chain->ks_module, "cpu_stat", 8) == 0)
 240                         ksp[numcpu++] = ksp_chain;
 241 /* #endif HAVE_LIBKSTAT */
 242
 243 #elif CAN_USE_SYSCTL
 244         size_t numcpu_size;
 245         int mib[2] = {CTL_HW, HW_NCPU};
 246         int status;
 247
 248         numcpu = 0;
 249         numcpu_size = sizeof (numcpu);
 250
 251         status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 252                         &numcpu, &numcpu_size, NULL, 0);
 253         if (status == -1)
 254         {
 255                 char errbuf[1024];
 256                 WARNING ("cpu plugin: sysctl: %s",
 257                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 258                 return (-1);
 259         }
 260 /* #endif CAN_USE_SYSCTL */
 261
 262 #elif defined (HAVE_SYSCTLBYNAME)
 263         size_t numcpu_size;
 264
 265         numcpu_size = sizeof (numcpu);
 266
 267         if (sysctlbyname ("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0)
 268         {
 269                 char errbuf[1024];
 270                 WARNING ("cpu plugin: sysctlbyname(hw.ncpu): %s",
 271                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 272                 return (-1);
 273         }
 274
 275 #ifdef HAVE_SYSCTL_KERN_CP_TIMES
 276         numcpu_size = sizeof (maxcpu);
 277
 278         if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0)
 279         {
 280                 char errbuf[1024];
 281                 WARNING ("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s",
 282                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 283                 return (-1);
 284         }
 285 #else
 286         if (numcpu != 1)
 287                 NOTICE ("cpu: Only one processor supported when using `sysctlbyname' (found %i)", numcpu);
 288 #endif
 289 /* #endif HAVE_SYSCTLBYNAME */
 290
 291 #elif defined(HAVE_LIBSTATGRAB)
 292         /* nothing to initialize */
 293 /* #endif HAVE_LIBSTATGRAB */
 294
 295 #elif defined(HAVE_PERFSTAT)
 296         /* nothing to initialize */
 297 #endif /* HAVE_PERFSTAT */
 298
 299         return (0);
 300 } /* int init */
 301
 302 static void submit_value (int cpu_num, int cpu_state, const char *type, value_t value)
 303 {
 304         value_t values[1];
 305         value_list_t vl = VALUE_LIST_INIT;
 306
 307         memcpy(&values[0], &value, sizeof(value));
 308
 309         vl.values = values;
 310         vl.values_len = 1;
 311
 312         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 313         sstrncpy (vl.plugin, "cpu", sizeof (vl.plugin));
 314         sstrncpy (vl.type, type, sizeof (vl.type));
 315         sstrncpy (vl.type_instance, cpu_state_names[cpu_state],
 316                   sizeof (vl.type_instance));
 317
 318         if (cpu_num > 0) {
 319                 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
 320                            "%i", cpu_num);
 321         }
 322         plugin_dispatch_values (&vl);
 323 }
 324
 325 static void submit_percent(int cpu_num, int cpu_state, gauge_t percent)
 326 {
 327         value_t value;
 328
 329         value.gauge = percent;
 330         submit_value (cpu_num, cpu_state, "percent", value);
 331 }
 332
 333 static void submit_derive(int cpu_num, int cpu_state, derive_t derive)
 334 {
 335         value_t value;
 336
 337         value.derive = derive;
 338         submit_value (cpu_num, cpu_state, "cpu", value);
 339 }
 340
 341 static void submit_flush (void)
 342 {
 343         int i = 0;
 344
 345         if (report_by_cpu)
 346                 return;
 347
 348         for (i = 1; i < CPU_SUBMIT_MAX; i++) {
 349                 if (percents[i] == -1)
 350                         continue;
 351                 submit_percent (-1, i, percents[i] / cpu_count);
 352         }
 353         cpu_count = 0;
 354         memset(percents, 0, sizeof(percents));
 355 }
 356
 357 static void submit (int cpu_num, derive_t *derives)
 358 {
 359
 360         int i = 0;
 361         derive_t cpu_active = 0;
 362         derive_t cpu_total = 0;
 363         gauge_t percent;
 364
 365         if (!report_percent && report_by_cpu) {
 366
 367                 for (i = 1; i < CPU_SUBMIT_ACTIVE; i++)
 368                 {
 369                         if (derives[i] == -1)
 370                                 continue;
 371
 372                         if (i != CPU_SUBMIT_IDLE)
 373                                 cpu_active += derives[i];
 374
 375                         submit_derive(cpu_num, i, derives[i]);
 376                 }
 377                 if (report_active)
 378                         submit_derive(cpu_num, CPU_SUBMIT_ACTIVE, cpu_active);
 379         }
 380         else /* we are reporting percents */
 381         {
 382                 for (i = 1; i < CPU_SUBMIT_ACTIVE; i++) {
 383                         if (derives[i] == -1)
 384                                 continue;
 385                         cpu_total += derives[i];
 386                         if (i != CPU_SUBMIT_IDLE)
 387                                 cpu_active += derives[i];
 388                 }
 389                 if (report_active)
 390                         derives[CPU_SUBMIT_ACTIVE] = cpu_active;
 391                 else
 392                         derives[CPU_SUBMIT_ACTIVE] = -1;
 393
 394                 cpu_count++;
 395                 for (i = 1; i < CPU_SUBMIT_MAX; i++) {
 396                         if (derives[i] == -1) {
 397                                 percents[i] = -1;
 398                                 continue;
 399                         }
 400                         percent = ((gauge_t)derives[i] / (gauge_t)cpu_total) * 100.0;
 401
 402                         if (report_by_cpu)
 403                         {
 404                                 submit_percent (cpu_num, i, percent);
 405                         } else if (percents[i] != -1) {
 406                                 percents[i] += percent;
 407                         }
 408                 }
 409         }
 410 }
 411
 412 static int cpu_read (void)
 413 {
 414 #if PROCESSOR_CPU_LOAD_INFO || PROCESSOR_TEMPERATURE
 415         int cpu;
 416
 417         kern_return_t status;
 418
 419 #if PROCESSOR_CPU_LOAD_INFO
 420         derive_t                       cpu_active;
 421         processor_cpu_load_info_data_t cpu_info;
 422         mach_msg_type_number_t         cpu_info_len;
 423 #endif
 424 #if PROCESSOR_TEMPERATURE
 425         processor_info_data_t          cpu_temp;
 426         mach_msg_type_number_t         cpu_temp_len;
 427 #endif
 428
 429         host_t cpu_host;
 430
 431         for (cpu = 0; cpu < cpu_list_len; cpu++)
 432         {
 433 #if PROCESSOR_CPU_LOAD_INFO
 434                 derive_t derives[CPU_SUBMIT_MAX] = {
 435                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 436                 };
 437                 memset(derives, -1, sizeof(derives));
 438                 cpu_host = 0;
 439                 cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
 440
 441                 if ((status = processor_info (cpu_list[cpu],
 442                                                 PROCESSOR_CPU_LOAD_INFO, &cpu_host,
 443                                                 (processor_info_t) &cpu_info, &cpu_info_len)) != KERN_SUCCESS)
 444                 {
 445                         ERROR ("cpu plugin: processor_info failed with status %i", (int) status);
 446                         continue;
 447                 }
 448
 449                 if (cpu_info_len < CPU_STATE_MAX)
 450                 {
 451                         ERROR ("cpu plugin: processor_info returned only %i elements..", cpu_info_len);
 452                         continue;
 453                 }
 454
 455                 derives[CPU_USER] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_USER];
 456                 derives[CPU_NICE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_NICE];
 457                 derives[CPU_SYSTEM] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_SYSTEM];
 458                 derives[CPU_IDLE] = (derive_t) cpu_info.cpu_ticks[CPU_STATE_IDLE];
 459                 submit (cpu, derives);
 460
 461 #endif /* PROCESSOR_CPU_LOAD_INFO */
 462 #if PROCESSOR_TEMPERATURE
 463                 /*
 464                  * Not all Apple computers do have this ability. To minimize
 465                  * the messages sent to the syslog we do an exponential
 466                  * stepback if `processor_info' fails. We still try ~once a day
 467                  * though..
 468                  */
 469                 if (cpu_temp_retry_counter > 0)
 470                 {
 471                         cpu_temp_retry_counter--;
 472                         continue;
 473                 }
 474
 475                 cpu_temp_len = PROCESSOR_INFO_MAX;
 476
 477                 status = processor_info (cpu_list[cpu],
 478                                 PROCESSOR_TEMPERATURE,
 479                                 &cpu_host,
 480                                 cpu_temp, &cpu_temp_len);
 481                 if (status != KERN_SUCCESS)
 482                 {
 483                         ERROR ("cpu plugin: processor_info failed: %s",
 484                                         mach_error_string (status));
 485
 486                         cpu_temp_retry_counter = cpu_temp_retry_step;
 487                         cpu_temp_retry_step *= 2;
 488                         if (cpu_temp_retry_step > cpu_temp_retry_max)
 489                                 cpu_temp_retry_step = cpu_temp_retry_max;
 490
 491                         continue;
 492                 }
 493
 494                 if (cpu_temp_len != 1)
 495                 {
 496                         DEBUG ("processor_info (PROCESSOR_TEMPERATURE) returned %i elements..?",
 497                                         (int) cpu_temp_len);
 498                         continue;
 499                 }
 500
 501                 cpu_temp_retry_counter = 0;
 502                 cpu_temp_retry_step    = 1;
 503 #endif /* PROCESSOR_TEMPERATURE */
 504         }
 505         submit_flush ();
 506 /* #endif PROCESSOR_CPU_LOAD_INFO */
 507
 508 #elif defined(KERNEL_LINUX)
 509         int cpu;
 510         FILE *fh;
 511         char buf[1024];
 512
 513         char *fields[9];
 514         int numfields;
 515
 516         if ((fh = fopen ("/proc/stat", "r")) == NULL)
 517         {
 518                 char errbuf[1024];
 519                 ERROR ("cpu plugin: fopen (/proc/stat) failed: %s",
 520                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 521                 return (-1);
 522         }
 523
 524         while (fgets (buf, 1024, fh) != NULL)
 525         {
 526                 derive_t derives[CPU_SUBMIT_MAX] = {
 527                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 528                 };
 529
 530                 if (strncmp (buf, "cpu", 3))
 531                         continue;
 532                 if ((buf[3] < '0') || (buf[3] > '9'))
 533                         continue;
 534
 535                 numfields = strsplit (buf, fields, 9);
 536                 if (numfields < 5)
 537                         continue;
 538
 539                 cpu = atoi (fields[0] + 3);
 540                 derives[CPU_SUBMIT_USER] = atoll(fields[1]);
 541                 derives[CPU_SUBMIT_NICE] = atoll(fields[2]);
 542                 derives[CPU_SUBMIT_SYSTEM] = atoll(fields[3]);
 543                 derives[CPU_SUBMIT_IDLE] = atoll(fields[4]);
 544
 545                 if (numfields >= 8)
 546                 {
 547                         derives[CPU_SUBMIT_WAIT] = atoll(fields[5]);
 548                         derives[CPU_SUBMIT_INTERRUPT] = atoll(fields[6]);
 549                         derives[CPU_SUBMIT_SOFTIRQ] = atoll(fields[6]);
 550
 551                         if (numfields >= 9)
 552                                 derives[CPU_SUBMIT_STEAL] = atoll(fields[8]);
 553                 }
 554                 submit(cpu, derives);
 555         }
 556         submit_flush();
 557
 558         fclose (fh);
 559 /* #endif defined(KERNEL_LINUX) */
 560
 561 #elif defined(HAVE_LIBKSTAT)
 562         int cpu;
 563         static cpu_stat_t cs;
 564
 565         if (kc == NULL)
 566                 return (-1);
 567
 568         for (cpu = 0; cpu < numcpu; cpu++)
 569         {
 570                 derive_t derives[CPU_SUBMIT_MAX] = {
 571                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 572                 };
 573
 574                 if (kstat_read (kc, ksp[cpu], &cs) == -1)
 575                         continue; /* error message? */
 576
 577                 memset(derives, -1, sizeof(derives));
 578                 derives[CPU_SUBMIT_IDLE] = cs.cpu_sysinfo.cpu[CPU_IDLE];
 579                 derives[CPU_SUBMIT_USER] = cs.cpu_sysinfo.cpu[CPU_USER];
 580                 derives[CPU_SUBMIT_SYSTEM] = cs.cpu_sysinfo.cpu[CPU_KERNEL];
 581                 derives[CPU_SUBMIT_WAIT] = cs.cpu_sysinfo.cpu[CPU_WAIT];
 582                 submit (ksp[cpu]->ks_instance, derives);
 583         }
 584         submit_flush ();
 585 /* #endif defined(HAVE_LIBKSTAT) */
 586
 587 #elif CAN_USE_SYSCTL
 588         uint64_t cpuinfo[numcpu][CPUSTATES];
 589         size_t cpuinfo_size;
 590         int status;
 591         int i;
 592
 593         if (numcpu < 1)
 594         {
 595                 ERROR ("cpu plugin: Could not determine number of "
 596                                 "installed CPUs using sysctl(3).");
 597                 return (-1);
 598         }
 599
 600         memset (cpuinfo, 0, sizeof (cpuinfo));
 601
 602 #if defined(KERN_CPTIME2)
 603         if (numcpu > 1) {
 604                 for (i = 0; i < numcpu; i++) {
 605                         int mib[] = {CTL_KERN, KERN_CPTIME2, i};
 606
 607                         cpuinfo_size = sizeof (cpuinfo[0]);
 608
 609                         status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 610                                         cpuinfo[i], &cpuinfo_size, NULL, 0);
 611                         if (status == -1) {
 612                                 char errbuf[1024];
 613                                 ERROR ("cpu plugin: sysctl failed: %s.",
 614                                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 615                                 return (-1);
 616                         }
 617                 }
 618         }
 619         else
 620 #endif /* defined(KERN_CPTIME2) */
 621         {
 622                 int mib[] = {CTL_KERN, KERN_CPTIME};
 623                 long cpuinfo_tmp[CPUSTATES];
 624
 625                 cpuinfo_size = sizeof(cpuinfo_tmp);
 626
 627                 status = sysctl (mib, STATIC_ARRAY_SIZE (mib),
 628                                         &cpuinfo_tmp, &cpuinfo_size, NULL, 0);
 629                 if (status == -1)
 630                 {
 631                         char errbuf[1024];
 632                         ERROR ("cpu plugin: sysctl failed: %s.",
 633                                         sstrerror (errno, errbuf, sizeof (errbuf)));
 634                         return (-1);
 635                 }
 636
 637                 for(i = 0; i < CPUSTATES; i++) {
 638                         cpuinfo[0][i] = cpuinfo_tmp[i];
 639                 }
 640         }
 641
 642         for (i = 0; i < numcpu; i++) {
 643                 derive_t derives[CPU_SUBMIT_MAX] = {
 644                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 645                 };
 646
 647                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 648                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 649                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 650                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 651                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 652                 submit(i, derives);
 653         }
 654         submit_flush();
 655 /* #endif CAN_USE_SYSCTL */
 656 #elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES)
 657         long cpuinfo[maxcpu][CPUSTATES];
 658         size_t cpuinfo_size;
 659         int i;
 660
 661         memset (cpuinfo, 0, sizeof (cpuinfo));
 662
 663         cpuinfo_size = sizeof (cpuinfo);
 664         if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 665         {
 666                 char errbuf[1024];
 667                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 668                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 669                 return (-1);
 670         }
 671
 672         for (i = 0; i < numcpu; i++) {
 673                 derive_t derives[CPU_SUBMIT_MAX] = {
 674                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 675                 };
 676
 677                 derives[CPU_SUBMIT_USER] = cpuinfo[i][CP_USER];
 678                 derives[CPU_SUBMIT_NICE] = cpuinfo[i][CP_NICE];
 679                 derives[CPU_SUBMIT_SYSTEM] = cpuinfo[i][CP_SYS];
 680                 derives[CPU_SUBMIT_IDLE] = cpuinfo[i][CP_IDLE];
 681                 derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[i][CP_INTR];
 682                 submit(i, derives);
 683         }
 684         submit_flush();
 685
 686 /* #endif HAVE_SYSCTL_KERN_CP_TIMES */
 687 #elif defined(HAVE_SYSCTLBYNAME)
 688         long cpuinfo[CPUSTATES];
 689         size_t cpuinfo_size;
 690         derive_t derives[CPU_SUBMIT_MAX] = {
 691                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 692         };
 693
 694         cpuinfo_size = sizeof (cpuinfo);
 695
 696         if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0)
 697         {
 698                 char errbuf[1024];
 699                 ERROR ("cpu plugin: sysctlbyname failed: %s.",
 700                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 701                 return (-1);
 702         }
 703
 704         derives[CPU_SUBMIT_USER] = cpuinfo[CP_USER];
 705         derives[CPU_SUBMIT_SYSTEM] = cpuinfo[CP_SYS];
 706         derives[CPU_SUBMIT_NICE] = cpuinfo[CP_NICE];
 707         derives[CPU_SUBMIT_IDLE] = cpuinfo[CP_IDLE];
 708         derives[CPU_SUBMIT_INTERRUPT] = cpuinfo[CP_INTR];
 709         submit(0, derives);
 710         submit_flush();
 711
 712 /* #endif HAVE_SYSCTLBYNAME */
 713
 714 #elif defined(HAVE_LIBSTATGRAB)
 715         sg_cpu_stats *cs;
 716         derive_t derives[CPU_SUBMIT_MAX] = {
 717                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 718         };
 719         cs = sg_get_cpu_stats ();
 720
 721         if (cs == NULL)
 722         {
 723                 ERROR ("cpu plugin: sg_get_cpu_stats failed.");
 724                 return (-1);
 725         }
 726
 727         derives[CPU_SUBMIT_IDLE] = (derive_t) cs->idle;
 728         derives[CPU_SUBMIT_NICE] = (derive_t) cs->nice;
 729         derives[CPU_SUBMIT_SWAP] = (derive_t) cs->swap;
 730         derives[CPU_SUBMIT_SYSTEM] = (derive_t) cs->kernel;
 731         derives[CPU_SUBMIT_USER] = (derive_t) cs->user;
 732         derives[CPU_SUBMIT_WAIT] = (derive_t) cs->iowait;
 733         submit(0, derives);
 734         submit_flush();
 735 /* #endif HAVE_LIBSTATGRAB */
 736
 737 #elif defined(HAVE_PERFSTAT)
 738         perfstat_id_t id;
 739         int i, cpus;
 740
 741         numcpu =  perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
 742         if(numcpu == -1)
 743         {
 744                 char errbuf[1024];
 745                 WARNING ("cpu plugin: perfstat_cpu: %s",
 746                         sstrerror (errno, errbuf, sizeof (errbuf)));
 747                 return (-1);
 748         }
 749
 750         if (pnumcpu != numcpu || perfcpu == NULL)
 751         {
 752                 if (perfcpu != NULL)
 753                         free(perfcpu);
 754                 perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
 755         }
 756         pnumcpu = numcpu;
 757
 758         id.name[0] = '\0';
 759         if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0)
 760         {
 761                 char errbuf[1024];
 762                 WARNING ("cpu plugin: perfstat_cpu: %s",
 763                         sstrerror (errno, errbuf, sizeof (errbuf)));
 764                 return (-1);
 765         }
 766
 767         for (i = 0; i < cpus; i++)
 768         {
 769                 derive_t derives[CPU_SUBMIT_MAX] = {
 770                         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
 771                 };
 772                 derives[CPU_SUBMIT_IDLE] = perfcpu[i].idle;
 773                 derives[CPU_SUBMIT_SYSTEM] = perfcpu[i].sys;
 774                 derives[CPU_SUBMIT_USER] = perfcpu[i].user;
 775                 derives[CPU_SUBMIT_WAIT] = perfcpu[i].wait;
 776                 submit(i, derives);
 777         }
 778         submit_flush();
 779 #endif /* HAVE_PERFSTAT */
 780
 781         return (0);
 782 }
 783
 784 void module_register (void)
 785 {
 786         plugin_register_init ("cpu", init);
 787         plugin_register_config ("cpu", cpu_config, config_keys, config_keys_num);
 788         plugin_register_read ("cpu", cpu_read);
 789 } /* void module_register */