src/freebsd_sysctl.c

   1 #include "common.h"
   2
   3 // NEEDED BY: struct vmtotal, struct vmmeter
   4 #include <sys/vmmeter.h>
   5 // NEEDED BY: struct devstat
   6 #include <sys/devicestat.h>
   7 // NEEDED BY: struct xswdev
   8 #include <vm/vm_param.h>
   9 // NEEDED BY: struct ipc_sem_data
  10 #define _KERNEL
  11 #include <sys/sem.h>
  12 #include <sys/shm.h>
  13 #undef _KERNEL
  14 // NEEDED BY: do_disk_io
  15 #define RRD_TYPE_DISK "disk"
  16
  17 // FreeBSD calculates load averages once every 5 seconds
  18 #define MIN_LOADAVG_UPDATE_EVERY 5
  19
  20 int do_freebsd_sysctl(int update_every, usec_t dt) {
  21     (void)dt;
  22
  23     static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1,
  24         do_loadavg = -1, do_all_processes = -1, do_disk_io = -1, do_swap = -1, do_ram = -1, do_swapio = -1,
  25         do_pgfaults = -1, do_committed = -1, do_ipc_semaphores = -1, do_ipc_shared_mem = -1;
  26
  27     if (unlikely(do_cpu == -1)) {
  28         do_cpu                  = config_get_boolean("plugin:freebsd:sysctl", "cpu utilization", 1);
  29         do_cpu_cores            = config_get_boolean("plugin:freebsd:sysctl", "per cpu core utilization", 1);
  30         do_interrupts           = config_get_boolean("plugin:freebsd:sysctl", "cpu interrupts", 1);
  31         do_context              = config_get_boolean("plugin:freebsd:sysctl", "context switches", 1);
  32         do_forks                = config_get_boolean("plugin:freebsd:sysctl", "processes started", 1);
  33         do_processes            = config_get_boolean("plugin:freebsd:sysctl", "processes running", 1);
  34         do_loadavg              = config_get_boolean("plugin:freebsd:sysctl", "enable load average", 1);
  35         do_all_processes        = config_get_boolean("plugin:freebsd:sysctl", "enable total processes", 1);
  36         do_disk_io              = config_get_boolean("plugin:freebsd:sysctl", "stats for all disks", 1);
  37         do_swap                 = config_get_boolean("plugin:freebsd:sysctl", "system swap", 1);
  38         do_ram                  = config_get_boolean("plugin:freebsd:sysctl", "system ram", 1);
  39         do_swapio               = config_get_boolean("plugin:freebsd:sysctl", "swap i/o", 1);
  40         do_pgfaults             = config_get_boolean("plugin:freebsd:sysctl", "memory page faults", 1);
  41         do_committed            = config_get_boolean("plugin:freebsd:sysctl", "committed memory", 1);
  42         do_ipc_semaphores       = config_get_boolean("plugin:freebsd:sysctl", "ipc semaphores", 1);
  43         do_ipc_shared_mem       = config_get_boolean("plugin:freebsd:sysctl", "ipc shared memory", 1);
  44     }
  45
  46     RRDSET *st;
  47
  48     int system_pagesize = getpagesize(); // wouldn't it be better to get value directly from hw.pagesize?
  49     int i;
  50
  51 // NEEDED BY: do_loadavg
  52     static usec_t last_loadavg_usec = 0;
  53     struct loadavg sysload;
  54
  55 // NEEDED BY: do_cpu, do_cpu_cores
  56     long cp_time[CPUSTATES];
  57
  58 // NEEDED BY: do_cpu_cores
  59     int ncpus;
  60     static long *pcpu_cp_time = NULL;
  61     char cpuid[8]; // no more than 4 digits expected
  62
  63 // NEEDED BY: do_all_processes, do_processes
  64     struct vmtotal vmtotal_data;
  65
  66 // NEEDED BY: do_context, do_forks
  67     u_int u_int_data;
  68
  69 // NEEDED BY: do_interrupts
  70     size_t intrcnt_size;
  71     unsigned long nintr = 0;
  72     static unsigned long *intrcnt = NULL;
  73     unsigned long long totalintr = 0;
  74
  75 // NEEDED BY: do_disk_io
  76     #define BINTIME_SCALE 5.42101086242752217003726400434970855712890625e-17 // this is 1000/2^64
  77     int numdevs;
  78     static void *devstat_data = NULL;
  79     struct devstat *dstat;
  80     struct cur_dstat {
  81         collected_number duration_read_ms;
  82         collected_number duration_write_ms;
  83         collected_number busy_time_ms;
  84     } cur_dstat;
  85     struct prev_dstat {
  86         collected_number bytes_read;
  87         collected_number bytes_write;
  88         collected_number operations_read;
  89         collected_number operations_write;
  90         collected_number duration_read_ms;
  91         collected_number duration_write_ms;
  92         collected_number busy_time_ms;
  93     } prev_dstat;
  94
  95     // NEEDED BY: do_swap
  96     size_t mibsize, size;
  97     int mib[3]; // CTL_MAXNAME = 24 maximum mib components (sysctl.h)
  98     struct xswdev xsw;
  99     struct total_xsw {
 100         collected_number bytes_used;
 101         collected_number bytes_total;
 102     } total_xsw = {0, 0};
 103
 104     // NEEDED BY: do_swapio, do_ram
 105     struct vmmeter vmmeter_data;
 106
 107     // NEEDED BY: do_ram
 108     int vfs_bufspace_count;
 109
 110     // NEEDED BY: do_ipc_semaphores
 111     struct ipc_sem {
 112         int semmni;
 113         collected_number sets;
 114         collected_number semaphores;
 115     } ipc_sem = {0, 0, 0};
 116     static struct semid_kernel *ipc_sem_data = NULL;
 117
 118     // NEEDED BY: do_ipc_shared_mem
 119     struct ipc_shm {
 120         u_long shmmni;
 121         collected_number segs;
 122         collected_number segsize;
 123     } ipc_shm = {0, 0, 0};
 124     static struct shmid_kernel *ipc_shm_data = NULL;
 125
 126     // --------------------------------------------------------------------
 127
 128     if (last_loadavg_usec <= dt) {
 129         if (likely(do_loadavg)) {
 130             if (unlikely(GETSYSCTL("vm.loadavg", sysload))) {
 131                 do_loadavg = 0;
 132                 error("DISABLED: system.load");
 133             } else {
 134
 135                 st = rrdset_find_bytype("system", "load");
 136                 if (unlikely(!st)) {
 137                     st = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, (update_every < MIN_LOADAVG_UPDATE_EVERY) ? MIN_LOADAVG_UPDATE_EVERY : update_every, RRDSET_TYPE_LINE);
 138                     rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 139                     rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 140                     rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 141                 }
 142                 else rrdset_next(st);
 143
 144                 rrddim_set(st, "load1", (collected_number) ((double)sysload.ldavg[0] / sysload.fscale * 1000));
 145                 rrddim_set(st, "load5", (collected_number) ((double)sysload.ldavg[1] / sysload.fscale * 1000));
 146                 rrddim_set(st, "load15", (collected_number) ((double)sysload.ldavg[2] / sysload.fscale * 1000));
 147                 rrdset_done(st);
 148             }
 149         }
 150
 151         last_loadavg_usec = st->update_every * USEC_PER_SEC;
 152     }
 153     else last_loadavg_usec -= dt;
 154
 155     // --------------------------------------------------------------------
 156
 157     if (likely(do_all_processes | do_processes | do_committed)) {
 158         if (unlikely(GETSYSCTL("vm.vmtotal", vmtotal_data))) {
 159             do_all_processes = 0;
 160             error("DISABLED: system.active_processes");
 161             do_processes = 0;
 162             error("DISABLED: system.processes");
 163             do_committed = 0;
 164             error("DISABLED: mem.committed");
 165         } else {
 166             if (likely(do_all_processes)) {
 167
 168                 st = rrdset_find_bytype("system", "active_processes");
 169                 if (unlikely(!st)) {
 170                     st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE);
 171                     rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE);
 172                 }
 173                 else rrdset_next(st);
 174
 175                 rrddim_set(st, "active", (vmtotal_data.t_rq + vmtotal_data.t_dw + vmtotal_data.t_pw + vmtotal_data.t_sl + vmtotal_data.t_sw));
 176                 rrdset_done(st);
 177             }
 178
 179             // --------------------------------------------------------------------
 180
 181             if (likely(do_processes)) {
 182
 183                 st = rrdset_find_bytype("system", "processes");
 184                 if (unlikely(!st)) {
 185                     st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE);
 186
 187                     rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE);
 188                     rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE);
 189                 }
 190                 else rrdset_next(st);
 191
 192                 rrddim_set(st, "running", vmtotal_data.t_rq);
 193                 rrddim_set(st, "blocked", (vmtotal_data.t_dw + vmtotal_data.t_pw));
 194                 rrdset_done(st);
 195             }
 196
 197             // --------------------------------------------------------------------
 198
 199             if (likely(do_committed)) {
 200                 st = rrdset_find("mem.committed");
 201                 if (unlikely(!st)) {
 202                     st = rrdset_create("mem", "committed", NULL, "system", NULL, "Committed (Allocated) Memory", "MB", 5000, update_every, RRDSET_TYPE_AREA);
 203                     st->isdetail = 1;
 204
 205                     rrddim_add(st, "Committed_AS", NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 206                 }
 207                 else rrdset_next(st);
 208
 209                 rrddim_set(st, "Committed_AS", vmtotal_data.t_rm);
 210                 rrdset_done(st);
 211             }
 212         }
 213     }
 214
 215     // --------------------------------------------------------------------
 216
 217     if (likely(do_cpu)) {
 218         if (unlikely(CPUSTATES != 5)) {
 219             error("FREEBSD: There are %d CPU states (5 was expected)", CPUSTATES);
 220             do_cpu = 0;
 221             error("DISABLED: system.cpu");
 222         } else {
 223             if (unlikely(GETSYSCTL("kern.cp_time", cp_time))) {
 224                 do_cpu = 0;
 225                 error("DISABLED: system.cpu");
 226             } else {
 227
 228                 st = rrdset_find_bytype("system", "cpu");
 229                 if (unlikely(!st)) {
 230                     st = rrdset_create("system", "cpu", NULL, "cpu", "system.cpu", "Total CPU utilization", "percentage", 100, update_every, RRDSET_TYPE_STACKED);
 231
 232                     rrddim_add(st, "user", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 233                     rrddim_add(st, "nice", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 234                     rrddim_add(st, "system", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 235                     rrddim_add(st, "interrupt", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 236                     rrddim_add(st, "idle", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 237                     rrddim_hide(st, "idle");
 238                 }
 239                 else rrdset_next(st);
 240
 241                 rrddim_set(st, "user", cp_time[0]);
 242                 rrddim_set(st, "nice", cp_time[1]);
 243                 rrddim_set(st, "system", cp_time[2]);
 244                 rrddim_set(st, "interrupt", cp_time[3]);
 245                 rrddim_set(st, "idle", cp_time[4]);
 246                 rrdset_done(st);
 247             }
 248         }
 249     }
 250
 251     // --------------------------------------------------------------------
 252
 253     if (likely(do_cpu_cores)) {
 254         if (unlikely(CPUSTATES != 5)) {
 255             error("FREEBSD: There are %d CPU states (5 was expected)", CPUSTATES);
 256             do_cpu_cores = 0;
 257             error("DISABLED: cpu.cpuXX");
 258         } else {
 259             if (unlikely(GETSYSCTL("kern.smp.cpus", ncpus))) {
 260                 do_cpu_cores = 0;
 261                 error("DISABLED: cpu.cpuXX");
 262             } else {
 263                 pcpu_cp_time = reallocz(pcpu_cp_time, sizeof(cp_time) * ncpus);
 264
 265                 for (i = 0; i < ncpus; i++) {
 266                     if (unlikely(getsysctl("kern.cp_times", pcpu_cp_time, sizeof(cp_time) * ncpus))) {
 267                         do_cpu_cores = 0;
 268                         error("DISABLED: cpu.cpuXX");
 269                         break;
 270                     }
 271                     if (unlikely(ncpus > 9999)) {
 272                         error("FREEBSD: There are more than 4 digits in cpu cores number");
 273                         do_cpu_cores = 0;
 274                         error("DISABLED: cpu.cpuXX");
 275                         break;
 276                     }
 277                     snprintfz(cpuid, 8, "cpu%d", i);
 278
 279                     st = rrdset_find_bytype("cpu", cpuid);
 280                     if (unlikely(!st)) {
 281                         st = rrdset_create("cpu", cpuid, NULL, "utilization", "cpu.cpu", "Core utilization", "percentage", 1000, update_every, RRDSET_TYPE_STACKED);
 282
 283                         rrddim_add(st, "user", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 284                         rrddim_add(st, "nice", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 285                         rrddim_add(st, "system", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 286                         rrddim_add(st, "interrupt", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 287                         rrddim_add(st, "idle", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 288                         rrddim_hide(st, "idle");
 289                     }
 290                     else rrdset_next(st);
 291
 292                     rrddim_set(st, "user", pcpu_cp_time[i * 5 + 0]);
 293                     rrddim_set(st, "nice", pcpu_cp_time[i * 5 + 1]);
 294                     rrddim_set(st, "system", pcpu_cp_time[i * 5 + 2]);
 295                     rrddim_set(st, "interrupt", pcpu_cp_time[i * 5 + 3]);
 296                     rrddim_set(st, "idle", pcpu_cp_time[i * 5 + 4]);
 297                     rrdset_done(st);
 298                 }
 299             }
 300         }
 301     }
 302
 303     // --------------------------------------------------------------------
 304
 305     if (likely(do_interrupts)) {
 306         if (unlikely(sysctlbyname("hw.intrcnt", NULL, &intrcnt_size, NULL, 0) == -1)) {
 307             error("FREEBSD: sysctl(hw.intrcnt...) failed: %s", strerror(errno));
 308             do_interrupts = 0;
 309             error("DISABLED: system.intr");
 310         } else {
 311             nintr = intrcnt_size / sizeof(u_long);
 312             intrcnt = reallocz(intrcnt, nintr * sizeof(u_long));
 313             if (unlikely(getsysctl("hw.intrcnt", intrcnt, nintr * sizeof(u_long)))){
 314                 do_interrupts = 0;
 315                 error("DISABLED: system.intr");
 316             } else {
 317                 for (i = 0; i < nintr; i++)
 318                     totalintr += intrcnt[i];
 319
 320                 st = rrdset_find_bytype("system", "intr");
 321                 if (unlikely(!st)) {
 322                     st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "Total Device Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE);
 323                     st->isdetail = 1;
 324
 325                     rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
 326                 }
 327                 else rrdset_next(st);
 328
 329                 rrddim_set(st, "interrupts", totalintr);
 330                 rrdset_done(st);
 331             }
 332         }
 333     }
 334
 335     // --------------------------------------------------------------------
 336
 337     if (likely(do_context)) {
 338         if (unlikely(GETSYSCTL("vm.stats.sys.v_swtch", u_int_data))) {
 339             do_context = 0;
 340             error("DISABLED: system.ctxt");
 341         } else {
 342
 343             st = rrdset_find_bytype("system", "ctxt");
 344             if (unlikely(!st)) {
 345                 st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE);
 346
 347                 rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL);
 348             }
 349             else rrdset_next(st);
 350
 351             rrddim_set(st, "switches", u_int_data);
 352             rrdset_done(st);
 353         }
 354     }
 355
 356     // --------------------------------------------------------------------
 357
 358     if (likely(do_forks)) {
 359         if (unlikely(GETSYSCTL("vm.stats.vm.v_forks", u_int_data))) {
 360             do_forks = 0;
 361             error("DISABLED: system.forks");
 362         } else {
 363
 364             st = rrdset_find_bytype("system", "forks");
 365             if (unlikely(!st)) {
 366                 st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE);
 367                 st->isdetail = 1;
 368
 369                 rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL);
 370             }
 371             else rrdset_next(st);
 372
 373             rrddim_set(st, "started", u_int_data);
 374             rrdset_done(st);
 375         }
 376     }
 377
 378     // --------------------------------------------------------------------
 379
 380     if (likely(do_disk_io)) {
 381         if (unlikely(GETSYSCTL("kern.devstat.numdevs", numdevs))) {
 382             do_disk_io = 0;
 383             error("DISABLED: disk.io");
 384         } else {
 385             devstat_data = reallocz(devstat_data, sizeof(long) + sizeof(struct devstat) * numdevs); // there is generation number before devstat structures
 386             if (unlikely(getsysctl("kern.devstat.all", devstat_data, sizeof(long) + sizeof(struct devstat) * numdevs))) {
 387                 do_disk_io = 0;
 388                 error("DISABLED: disk.io");
 389             } else {
 390                 dstat = devstat_data + sizeof(long); // skip generation number
 391                 collected_number total_disk_reads = 0;
 392                 collected_number total_disk_writes = 0;
 393
 394                 for (i = 0; i < numdevs; i++) {
 395                     if ((dstat[i].device_type == (DEVSTAT_TYPE_IF_SCSI | DEVSTAT_TYPE_DIRECT)) || (dstat[i].device_type == (DEVSTAT_TYPE_IF_IDE | DEVSTAT_TYPE_DIRECT))) {
 396
 397                         // --------------------------------------------------------------------
 398
 399                         st = rrdset_find_bytype(RRD_TYPE_DISK, dstat[i].device_name);
 400                         if (unlikely(!st)) {
 401                             st = rrdset_create(RRD_TYPE_DISK, dstat[i].device_name, NULL, dstat[i].device_name, "disk.io", "Disk I/O Bandwidth", "kilobytes/s", 2000, update_every, RRDSET_TYPE_AREA);
 402
 403                             rrddim_add(st, "reads", NULL, 1, 1024, RRDDIM_INCREMENTAL);
 404                             rrddim_add(st, "writes", NULL, -1, 1024, RRDDIM_INCREMENTAL);
 405                         }
 406                         else rrdset_next(st);
 407
 408                         total_disk_reads += dstat[i].bytes[DEVSTAT_READ];
 409                         total_disk_writes += dstat[i].bytes[DEVSTAT_WRITE];
 410                         prev_dstat.bytes_read = rrddim_set(st, "reads", dstat[i].bytes[DEVSTAT_READ]);
 411                         prev_dstat.bytes_write = rrddim_set(st, "writes", dstat[i].bytes[DEVSTAT_WRITE]);
 412                         rrdset_done(st);
 413
 414                         // --------------------------------------------------------------------
 415
 416                         st = rrdset_find_bytype("disk_ops", dstat[i].device_name);
 417                         if (unlikely(!st)) {
 418                             st = rrdset_create("disk_ops", dstat[i].device_name, NULL, dstat[i].device_name, "disk.ops", "Disk Completed I/O Operations", "operations/s", 2001, update_every, RRDSET_TYPE_LINE);
 419                             st->isdetail = 1;
 420
 421                             rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
 422                             rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
 423                         }
 424                         else rrdset_next(st);
 425
 426                         prev_dstat.operations_read = rrddim_set(st, "reads", dstat[i].operations[DEVSTAT_READ]);
 427                         prev_dstat.operations_write = rrddim_set(st, "writes", dstat[i].operations[DEVSTAT_WRITE]);
 428                         rrdset_done(st);
 429
 430                         // --------------------------------------------------------------------
 431
 432                         st = rrdset_find_bytype("disk_qops", dstat[i].device_name);
 433                         if (unlikely(!st)) {
 434                             st = rrdset_create("disk_qops", dstat[i].device_name, NULL, dstat[i].device_name, "disk.qops", "Disk Current I/O Operations", "operations", 2002, update_every, RRDSET_TYPE_LINE);
 435                             st->isdetail = 1;
 436
 437                             rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE);
 438                         }
 439                         else rrdset_next(st);
 440
 441                         rrddim_set(st, "operations", dstat[i].start_count - dstat[i].end_count);
 442                         rrdset_done(st);
 443
 444                         // --------------------------------------------------------------------
 445
 446                         st = rrdset_find_bytype("disk_util", dstat[i].device_name);
 447                         if (unlikely(!st)) {
 448                             st = rrdset_create("disk_util", dstat[i].device_name, NULL, dstat[i].device_name, "disk.util", "Disk Utilization Time", "% of time working", 2004, update_every, RRDSET_TYPE_AREA);
 449                             st->isdetail = 1;
 450
 451                             rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL);
 452                         }
 453                         else rrdset_next(st);
 454
 455                         cur_dstat.busy_time_ms = dstat[i].busy_time.sec * 1000 + dstat[i].busy_time.frac * BINTIME_SCALE;
 456                         prev_dstat.busy_time_ms = rrddim_set(st, "utilization", cur_dstat.busy_time_ms);
 457                         rrdset_done(st);
 458
 459                         // --------------------------------------------------------------------
 460
 461                         st = rrdset_find_bytype("disk_iotime", dstat[i].device_name);
 462                         if (unlikely(!st)) {
 463                             st = rrdset_create("disk_iotime", dstat[i].device_name, NULL, dstat[i].device_name, "disk.iotime", "Disk Total I/O Time", "milliseconds/s", 2022, update_every, RRDSET_TYPE_LINE);
 464                             st->isdetail = 1;
 465
 466                             rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
 467                             rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
 468                         }
 469                         else rrdset_next(st);
 470
 471                         cur_dstat.duration_read_ms = dstat[i].duration[DEVSTAT_READ].sec * 1000 + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
 472                         cur_dstat.duration_write_ms = dstat[i].duration[DEVSTAT_WRITE].sec * 1000 + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
 473                         prev_dstat.duration_read_ms = rrddim_set(st, "reads", cur_dstat.duration_read_ms);
 474                         prev_dstat.duration_write_ms = rrddim_set(st, "writes", cur_dstat.duration_write_ms);
 475                         rrdset_done(st);
 476
 477                         // --------------------------------------------------------------------
 478                         // calculate differential charts
 479                         // only if this is not the first time we run
 480
 481                         if (likely(dt)) {
 482
 483                             // --------------------------------------------------------------------
 484
 485                             st = rrdset_find_bytype("disk_await", dstat[i].device_name);
 486                             if (unlikely(!st)) {
 487                                 st = rrdset_create("disk_await", dstat[i].device_name, NULL, dstat[i].device_name, "disk.await", "Average Completed I/O Operation Time", "ms per operation", 2005, update_every, RRDSET_TYPE_LINE);
 488                                 st->isdetail = 1;
 489
 490                                 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE);
 491                                 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE);
 492                             }
 493                             else rrdset_next(st);
 494
 495                             rrddim_set(st, "reads", (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) ?
 496                                 (cur_dstat.duration_read_ms - prev_dstat.duration_read_ms) / (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) : 0);
 497                             rrddim_set(st, "writes", (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) ?
 498                                 (cur_dstat.duration_write_ms - prev_dstat.duration_write_ms) / (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) : 0);
 499                             rrdset_done(st);
 500
 501                             // --------------------------------------------------------------------
 502
 503                             st = rrdset_find_bytype("disk_avgsz", dstat[i].device_name);
 504                             if (unlikely(!st)) {
 505                                 st = rrdset_create("disk_avgsz", dstat[i].device_name, NULL, dstat[i].device_name, "disk.avgsz", "Average Completed I/O Operation Bandwidth", "kilobytes per operation", 2006, update_every, RRDSET_TYPE_AREA);
 506                                 st->isdetail = 1;
 507
 508                                 rrddim_add(st, "reads", NULL, 1, 1024, RRDDIM_ABSOLUTE);
 509                                 rrddim_add(st, "writes", NULL, -1, 1024, RRDDIM_ABSOLUTE);
 510                             }
 511                             else rrdset_next(st);
 512
 513                             rrddim_set(st, "reads", (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) ?
 514                                 (dstat[i].bytes[DEVSTAT_READ] - prev_dstat.bytes_read) / (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) : 0);
 515                             rrddim_set(st, "writes", (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) ?
 516                                 (dstat[i].bytes[DEVSTAT_WRITE] - prev_dstat.bytes_write) / (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) : 0);
 517                             rrdset_done(st);
 518
 519                             // --------------------------------------------------------------------
 520
 521                             st = rrdset_find_bytype("disk_svctm", dstat[i].device_name);
 522                             if (unlikely(!st)) {
 523                                 st = rrdset_create("disk_svctm", dstat[i].device_name, NULL, dstat[i].device_name, "disk.svctm", "Average Service Time", "ms per operation", 2007, update_every, RRDSET_TYPE_LINE);
 524                                 st->isdetail = 1;
 525
 526                                 rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE);
 527                             }
 528                             else rrdset_next(st);
 529
 530                             rrddim_set(st, "svctm", ((dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) + (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write)) ?
 531                                 (cur_dstat.busy_time_ms - prev_dstat.busy_time_ms) / ((dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) + (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write)) : 0);
 532                             rrdset_done(st);
 533                         }
 534                     }
 535
 536                     // --------------------------------------------------------------------
 537
 538                     st = rrdset_find_bytype("system", "io");
 539                     if (unlikely(!st)) {
 540                         st = rrdset_create("system", "io", NULL, "disk", NULL, "Disk I/O", "kilobytes/s", 150, update_every, RRDSET_TYPE_AREA);
 541                         rrddim_add(st, "in",  NULL,  1, 1024, RRDDIM_INCREMENTAL);
 542                         rrddim_add(st, "out", NULL, -1, 1024, RRDDIM_INCREMENTAL);
 543                     }
 544                     else rrdset_next(st);
 545
 546                     rrddim_set(st, "in", total_disk_reads);
 547                     rrddim_set(st, "out", total_disk_writes);
 548                     rrdset_done(st);
 549                 }
 550             }
 551         }
 552     }
 553
 554     // --------------------------------------------------------------------
 555
 556
 557     if (likely(do_swap)) {
 558         mibsize = sizeof mib / sizeof mib[0];
 559         if (unlikely(sysctlnametomib("vm.swap_info", mib, &mibsize) == -1)) {
 560             error("FREEBSD: sysctl(%s...) failed: %s", "vm.swap_info", strerror(errno));
 561             do_swap = 0;
 562             error("DISABLED: disk.io");
 563         } else {
 564             for (i = 0; ; i++) {
 565                 mib[mibsize] = i;
 566                 size = sizeof(xsw);
 567                 if (unlikely(sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1 )) {
 568                     if (unlikely(errno != ENOENT)) {
 569                         error("FREEBSD: sysctl(%s...) failed: %s", "vm.swap_info", strerror(errno));
 570                         do_swap = 0;
 571                         error("DISABLED: disk.io");
 572                     } else {
 573                         if (unlikely(size != sizeof(xsw))) {
 574                             error("FREEBSD: sysctl(%s...) expected %lu, got %lu", "vm.swap_info", (unsigned long)sizeof(xsw), (unsigned long)size);
 575                             do_swap = 0;
 576                             error("DISABLED: disk.io");
 577                         } else break;
 578                     }
 579                 }
 580                 total_xsw.bytes_used += xsw.xsw_used * system_pagesize;
 581                 total_xsw.bytes_total += xsw.xsw_nblks * system_pagesize;
 582             }
 583
 584             if (likely(do_swap)) {
 585                 st = rrdset_find("system.swap");
 586                 if (unlikely(!st)) {
 587                     st = rrdset_create("system", "swap", NULL, "swap", NULL, "System Swap", "MB", 201, update_every, RRDSET_TYPE_STACKED);
 588                     st->isdetail = 1;
 589
 590                     rrddim_add(st, "free",    NULL, 1, 1048576, RRDDIM_ABSOLUTE);
 591                     rrddim_add(st, "used",    NULL, 1, 1048576, RRDDIM_ABSOLUTE);
 592                 }
 593                 else rrdset_next(st);
 594
 595                 rrddim_set(st, "used", total_xsw.bytes_used);
 596                 rrddim_set(st, "free", total_xsw.bytes_total - total_xsw.bytes_used);
 597                 rrdset_done(st);
 598             }
 599         }
 600     }
 601
 602     // --------------------------------------------------------------------
 603
 604     if (likely(do_ram)) {
 605         if (unlikely(GETSYSCTL("vm.stats.vm.v_active_count",    vmmeter_data.v_active_count) ||
 606                      GETSYSCTL("vm.stats.vm.v_inactive_count",  vmmeter_data.v_inactive_count) ||
 607                      GETSYSCTL("vm.stats.vm.v_wire_count",      vmmeter_data.v_wire_count) ||
 608                      GETSYSCTL("vm.stats.vm.v_cache_count",     vmmeter_data.v_cache_count) ||
 609                      GETSYSCTL("vfs.bufspace",                  vfs_bufspace_count) ||
 610                      GETSYSCTL("vm.stats.vm.v_free_count",      vmmeter_data.v_free_count))) {
 611             do_swapio = 0;
 612             error("DISABLED: system.swapio");
 613         } else {
 614             st = rrdset_find("system.ram");
 615             if (unlikely(!st)) {
 616                 st = rrdset_create("system", "ram", NULL, "ram", NULL, "System RAM", "MB", 200, update_every, RRDSET_TYPE_STACKED);
 617
 618                 rrddim_add(st, "active",    NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 619                 rrddim_add(st, "inactive",  NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 620                 rrddim_add(st, "wired",     NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 621                 rrddim_add(st, "cache",     NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 622                 rrddim_add(st, "buffers",   NULL, 1, 1024, RRDDIM_ABSOLUTE);
 623                 rrddim_add(st, "free",      NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 624             }
 625             else rrdset_next(st);
 626
 627             rrddim_set(st, "active",    vmmeter_data.v_active_count);
 628             rrddim_set(st, "inactive",  vmmeter_data.v_inactive_count);
 629             rrddim_set(st, "wired",     vmmeter_data.v_wire_count);
 630             rrddim_set(st, "cache",     vmmeter_data.v_cache_count);
 631             rrddim_set(st, "buffers",   vfs_bufspace_count);
 632             rrddim_set(st, "free",      vmmeter_data.v_free_count);
 633             rrdset_done(st);
 634         }
 635     }
 636
 637     // --------------------------------------------------------------------
 638
 639     if (likely(do_swapio)) {
 640         if (unlikely(GETSYSCTL("vm.stats.vm.v_swappgsin", vmmeter_data.v_swappgsin) || GETSYSCTL("vm.stats.vm.v_vnodepgsout", vmmeter_data.v_swappgsout))) {
 641             do_swapio = 0;
 642             error("DISABLED: system.swapio");
 643         } else {
 644             st = rrdset_find("system.swapio");
 645             if (unlikely(!st)) {
 646                 st = rrdset_create("system", "swapio", NULL, "swap", NULL, "Swap I/O", "kilobytes/s", 250, update_every, RRDSET_TYPE_AREA);
 647
 648                 rrddim_add(st, "in",  NULL, system_pagesize, 1024, RRDDIM_INCREMENTAL);
 649                 rrddim_add(st, "out", NULL, -system_pagesize, 1024, RRDDIM_INCREMENTAL);
 650             }
 651             else rrdset_next(st);
 652
 653             rrddim_set(st, "in", vmmeter_data.v_swappgsin);
 654             rrddim_set(st, "out", vmmeter_data.v_swappgsout);
 655             rrdset_done(st);
 656         }
 657     }
 658
 659     // --------------------------------------------------------------------
 660
 661     if (likely(do_pgfaults)) {
 662         if (unlikely(GETSYSCTL("vm.stats.vm.v_vm_faults",   vmmeter_data.v_vm_faults) ||
 663                      GETSYSCTL("vm.stats.vm.v_io_faults",   vmmeter_data.v_io_faults) ||
 664                      GETSYSCTL("vm.stats.vm.v_cow_faults",  vmmeter_data.v_cow_faults) ||
 665                      GETSYSCTL("vm.stats.vm.v_cow_optim",   vmmeter_data.v_cow_optim) ||
 666                      GETSYSCTL("vm.stats.vm.v_intrans",     vmmeter_data.v_intrans))) {
 667             do_pgfaults = 0;
 668             error("DISABLED: mem.pgfaults");
 669         } else {
 670             st = rrdset_find("mem.pgfaults");
 671             if (unlikely(!st)) {
 672                 st = rrdset_create("mem", "pgfaults", NULL, "system", NULL, "Memory Page Faults", "page faults/s", 500, update_every, RRDSET_TYPE_LINE);
 673                 st->isdetail = 1;
 674
 675                 rrddim_add(st, "memory", NULL, 1, 1, RRDDIM_INCREMENTAL);
 676                 rrddim_add(st, "io_requiring", NULL, 1, 1, RRDDIM_INCREMENTAL);
 677                 rrddim_add(st, "cow", NULL, 1, 1, RRDDIM_INCREMENTAL);
 678                 rrddim_add(st, "cow_optimized", NULL, 1, 1, RRDDIM_INCREMENTAL);
 679                 rrddim_add(st, "in_transit", NULL, 1, 1, RRDDIM_INCREMENTAL);
 680             }
 681             else rrdset_next(st);
 682
 683             rrddim_set(st, "memory", vmmeter_data.v_vm_faults);
 684             rrddim_set(st, "io_requiring", vmmeter_data.v_io_faults);
 685             rrddim_set(st, "cow", vmmeter_data.v_cow_faults);
 686             rrddim_set(st, "cow_optimized", vmmeter_data.v_cow_optim);
 687             rrddim_set(st, "in_transit", vmmeter_data.v_intrans);
 688             rrdset_done(st);
 689         }
 690     }
 691
 692     // --------------------------------------------------------------------
 693
 694     if (likely(do_ipc_semaphores)) {
 695         if (unlikely(GETSYSCTL("kern.ipc.semmni", ipc_sem.semmni))) {
 696             do_ipc_semaphores = 0;
 697             error("DISABLED: system.ipc_semaphores");
 698             error("DISABLED: system.ipc_semaphore_arrays");
 699         } else {
 700             ipc_sem_data = reallocz(ipc_sem_data, sizeof(struct semid_kernel) * ipc_sem.semmni);
 701             if (unlikely(getsysctl("kern.ipc.sema", ipc_sem_data, sizeof(struct semid_kernel) * ipc_sem.semmni))) {
 702                 do_ipc_semaphores = 0;
 703                 error("DISABLED: system.ipc_semaphores");
 704                 error("DISABLED: system.ipc_semaphore_arrays");;
 705             } else {
 706                 for (i = 0; i < ipc_sem.semmni; i++) {
 707                     if (unlikely(ipc_sem_data[i].u.sem_perm.mode & SEM_ALLOC)) {
 708                         ipc_sem.sets += 1;
 709                         ipc_sem.semaphores += ipc_sem_data[i].u.sem_nsems;
 710                     }
 711                 }
 712
 713                 // --------------------------------------------------------------------
 714
 715                 st = rrdset_find("system.ipc_semaphores");
 716                 if (unlikely(!st)) {
 717                     st = rrdset_create("system", "ipc_semaphores", NULL, "ipc semaphores", NULL, "IPC Semaphores", "semaphores", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 718                     rrddim_add(st, "semaphores", NULL, 1, 1, RRDDIM_ABSOLUTE);
 719                 }
 720                 else rrdset_next(st);
 721
 722                 rrddim_set(st, "semaphores", ipc_sem.semaphores);
 723                 rrdset_done(st);
 724
 725                 // --------------------------------------------------------------------
 726
 727                 st = rrdset_find("system.ipc_semaphore_arrays");
 728                 if (unlikely(!st)) {
 729                     st = rrdset_create("system", "ipc_semaphore_arrays", NULL, "ipc semaphores", NULL, "IPC Semaphore Arrays", "arrays", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 730                     rrddim_add(st, "arrays", NULL, 1, 1, RRDDIM_ABSOLUTE);
 731                 }
 732                 else rrdset_next(st);
 733
 734                 rrddim_set(st, "arrays", ipc_sem.sets);
 735                 rrdset_done(st);
 736             }
 737         }
 738     }
 739
 740     // --------------------------------------------------------------------
 741
 742     if (likely(do_ipc_shared_mem)) {
 743         if (unlikely(GETSYSCTL("kern.ipc.shmmni", ipc_shm.shmmni))) {
 744             do_ipc_shared_mem = 0;
 745             error("DISABLED: system.ipc_shared_mem_segs");
 746             error("DISABLED: system.ipc_shared_mem_size");
 747         } else {
 748             ipc_shm_data = reallocz(ipc_shm_data, sizeof(struct shmid_kernel) * ipc_shm.shmmni);
 749             if (unlikely(getsysctl("kern.ipc.shmsegs", ipc_shm_data, sizeof(struct shmid_kernel) * ipc_shm.shmmni))) {
 750                 do_ipc_shared_mem = 0;
 751                 error("DISABLED: system.ipc_shared_mem_segs");
 752                 error("DISABLED: system.ipc_shared_mem_size");;
 753             } else {
 754                 for (i = 0; i < ipc_shm.shmmni; i++) {
 755                     if (unlikely(ipc_shm_data[i].u.shm_perm.mode & 0x0800)) {
 756                         ipc_shm.segs += 1;
 757                         ipc_shm.segsize += ipc_shm_data[i].u.shm_segsz;
 758                     }
 759                 }
 760
 761                 // --------------------------------------------------------------------
 762
 763                 st = rrdset_find("system.ipc_shared_mem_segs");
 764                 if (unlikely(!st)) {
 765                     st = rrdset_create("system", "ipc_shared_mem_segs", NULL, "ipc shared memory", NULL, "IPC Shared Memory Segments", "segments", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 766                     rrddim_add(st, "segments", NULL, 1, 1, RRDDIM_ABSOLUTE);
 767                 }
 768                 else rrdset_next(st);
 769
 770                 rrddim_set(st, "segments", ipc_shm.segs);
 771                 rrdset_done(st);
 772
 773                 // --------------------------------------------------------------------
 774
 775                 st = rrdset_find("system.ipc_shared_mem_size");
 776                 if (unlikely(!st)) {
 777                     st = rrdset_create("system", "ipc_shared_mem_size", NULL, "ipc shared memory", NULL, "IPC Shared Memory Segments Size", "kilobytes", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 778                     rrddim_add(st, "allocated", NULL, 1, 1024, RRDDIM_ABSOLUTE);
 779                 }
 780                 else rrdset_next(st);
 781
 782                 rrddim_set(st, "allocated", ipc_shm.segsize);
 783                 rrdset_done(st);
 784             }
 785         }
 786     }
 787
 788     return 0;
 789 }