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 semid_kernel, struct shmid_kernel, struct msqid_kernel
  10 #define _KERNEL
  11 #include <sys/sem.h>
  12 #include <sys/shm.h>
  13 #include <sys/msg.h>
  14 #undef _KERNEL
  15 // NEEDED BY: do_disk_io
  16 #define RRD_TYPE_DISK "disk"
  17
  18 // FreeBSD calculates load averages once every 5 seconds
  19 #define MIN_LOADAVG_UPDATE_EVERY 5
  20
  21 int do_freebsd_sysctl(int update_every, usec_t dt) {
  22     (void)dt;
  23
  24     static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1,
  25         do_loadavg = -1, do_all_processes = -1, do_disk_io = -1, do_swap = -1, do_ram = -1, do_swapio = -1,
  26         do_pgfaults = -1, do_committed = -1, do_ipc_semaphores = -1, do_ipc_shared_mem = -1, do_ipc_msg_queues = -1,
  27         do_dev_intr = -1, do_soft_intr = -1;
  28
  29     if (unlikely(do_cpu == -1)) {
  30         do_cpu                  = config_get_boolean("plugin:freebsd:sysctl", "cpu utilization", 1);
  31         do_cpu_cores            = config_get_boolean("plugin:freebsd:sysctl", "per cpu core utilization", 1);
  32         do_interrupts           = config_get_boolean("plugin:freebsd:sysctl", "cpu interrupts", 1);
  33         do_dev_intr             = config_get_boolean("plugin:freebsd:sysctl", "device interrupts", 1);
  34         do_soft_intr            = config_get_boolean("plugin:freebsd:sysctl", "software interrupts", 1);
  35         do_context              = config_get_boolean("plugin:freebsd:sysctl", "context switches", 1);
  36         do_forks                = config_get_boolean("plugin:freebsd:sysctl", "processes started", 1);
  37         do_processes            = config_get_boolean("plugin:freebsd:sysctl", "processes running", 1);
  38         do_loadavg              = config_get_boolean("plugin:freebsd:sysctl", "enable load average", 1);
  39         do_all_processes        = config_get_boolean("plugin:freebsd:sysctl", "enable total processes", 1);
  40         do_disk_io              = config_get_boolean("plugin:freebsd:sysctl", "stats for all disks", 1);
  41         do_swap                 = config_get_boolean("plugin:freebsd:sysctl", "system swap", 1);
  42         do_ram                  = config_get_boolean("plugin:freebsd:sysctl", "system ram", 1);
  43         do_swapio               = config_get_boolean("plugin:freebsd:sysctl", "swap i/o", 1);
  44         do_pgfaults             = config_get_boolean("plugin:freebsd:sysctl", "memory page faults", 1);
  45         do_committed            = config_get_boolean("plugin:freebsd:sysctl", "committed memory", 1);
  46         do_ipc_semaphores       = config_get_boolean("plugin:freebsd:sysctl", "ipc semaphores", 1);
  47         do_ipc_shared_mem       = config_get_boolean("plugin:freebsd:sysctl", "ipc shared memory", 1);
  48         do_ipc_msg_queues       = config_get_boolean("plugin:freebsd:sysctl", "ipc message queues", 1);
  49     }
  50
  51     RRDSET *st;
  52
  53     int system_pagesize = getpagesize(); // wouldn't it be better to get value directly from hw.pagesize?
  54     int i;
  55
  56 // NEEDED BY: do_loadavg
  57     static usec_t last_loadavg_usec = 0;
  58     struct loadavg sysload;
  59
  60 // NEEDED BY: do_cpu, do_cpu_cores
  61     long cp_time[CPUSTATES];
  62
  63 // NEEDED BY: do_cpu_cores
  64     int ncpus;
  65     static long *pcpu_cp_time = NULL;
  66     char cpuid[8]; // no more than 4 digits expected
  67
  68 // NEEDED BY: do_all_processes, do_processes
  69     struct vmtotal vmtotal_data;
  70
  71 // NEEDED BY: do_context, do_forks
  72     u_int u_int_data;
  73
  74 // NEEDED BY: do_interrupts
  75     size_t intrcnt_size;
  76     unsigned long nintr = 0;
  77     static unsigned long *intrcnt = NULL;
  78     unsigned long long totalintr = 0;
  79
  80 // NEEDED BY: do_disk_io
  81     #define BINTIME_SCALE 5.42101086242752217003726400434970855712890625e-17 // this is 1000/2^64
  82     int numdevs;
  83     static void *devstat_data = NULL;
  84     struct devstat *dstat;
  85     struct cur_dstat {
  86         collected_number duration_read_ms;
  87         collected_number duration_write_ms;
  88         collected_number busy_time_ms;
  89     } cur_dstat;
  90     struct prev_dstat {
  91         collected_number bytes_read;
  92         collected_number bytes_write;
  93         collected_number operations_read;
  94         collected_number operations_write;
  95         collected_number duration_read_ms;
  96         collected_number duration_write_ms;
  97         collected_number busy_time_ms;
  98     } prev_dstat;
  99
 100     // NEEDED BY: do_swap
 101     size_t mibsize, size;
 102     int mib[3]; // CTL_MAXNAME = 24 maximum mib components (sysctl.h)
 103     struct xswdev xsw;
 104     struct total_xsw {
 105         collected_number bytes_used;
 106         collected_number bytes_total;
 107     } total_xsw = {0, 0};
 108
 109     // NEEDED BY: do_swapio, do_ram
 110     struct vmmeter vmmeter_data;
 111
 112     // NEEDED BY: do_ram
 113     int vfs_bufspace_count;
 114
 115     // NEEDED BY: do_ipc_semaphores
 116     struct ipc_sem {
 117         int semmni;
 118         collected_number sets;
 119         collected_number semaphores;
 120     } ipc_sem = {0, 0, 0};
 121     static struct semid_kernel *ipc_sem_data = NULL;
 122
 123     // NEEDED BY: do_ipc_shared_mem
 124     struct ipc_shm {
 125         u_long shmmni;
 126         collected_number segs;
 127         collected_number segsize;
 128     } ipc_shm = {0, 0, 0};
 129     static struct shmid_kernel *ipc_shm_data = NULL;
 130
 131     // NEEDED BY: do_ipc_msg_queues
 132     struct ipc_msq {
 133         int msgmni;
 134         collected_number queues;
 135         collected_number messages;
 136         collected_number usedsize;
 137         collected_number allocsize;
 138     } ipc_msq = {0, 0, 0, 0, 0};
 139     static struct msqid_kernel *ipc_msq_data = NULL;
 140
 141     // --------------------------------------------------------------------
 142
 143     if (last_loadavg_usec <= dt) {
 144         if (likely(do_loadavg)) {
 145             if (unlikely(GETSYSCTL("vm.loadavg", sysload))) {
 146                 do_loadavg = 0;
 147                 error("DISABLED: system.load");
 148             } else {
 149
 150                 st = rrdset_find_bytype("system", "load");
 151                 if (unlikely(!st)) {
 152                     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);
 153                     rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 154                     rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 155                     rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE);
 156                 }
 157                 else rrdset_next(st);
 158
 159                 rrddim_set(st, "load1", (collected_number) ((double)sysload.ldavg[0] / sysload.fscale * 1000));
 160                 rrddim_set(st, "load5", (collected_number) ((double)sysload.ldavg[1] / sysload.fscale * 1000));
 161                 rrddim_set(st, "load15", (collected_number) ((double)sysload.ldavg[2] / sysload.fscale * 1000));
 162                 rrdset_done(st);
 163             }
 164         }
 165
 166         last_loadavg_usec = st->update_every * USEC_PER_SEC;
 167     }
 168     else last_loadavg_usec -= dt;
 169
 170     // --------------------------------------------------------------------
 171
 172     if (likely(do_all_processes | do_processes | do_committed)) {
 173         if (unlikely(GETSYSCTL("vm.vmtotal", vmtotal_data))) {
 174             do_all_processes = 0;
 175             error("DISABLED: system.active_processes");
 176             do_processes = 0;
 177             error("DISABLED: system.processes");
 178             do_committed = 0;
 179             error("DISABLED: mem.committed");
 180         } else {
 181             if (likely(do_all_processes)) {
 182
 183                 st = rrdset_find_bytype("system", "active_processes");
 184                 if (unlikely(!st)) {
 185                     st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE);
 186                     rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE);
 187                 }
 188                 else rrdset_next(st);
 189
 190                 rrddim_set(st, "active", (vmtotal_data.t_rq + vmtotal_data.t_dw + vmtotal_data.t_pw + vmtotal_data.t_sl + vmtotal_data.t_sw));
 191                 rrdset_done(st);
 192             }
 193
 194             // --------------------------------------------------------------------
 195
 196             if (likely(do_processes)) {
 197
 198                 st = rrdset_find_bytype("system", "processes");
 199                 if (unlikely(!st)) {
 200                     st = rrdset_create("system", "processes", NULL, "processes", NULL, "System Processes", "processes", 600, update_every, RRDSET_TYPE_LINE);
 201
 202                     rrddim_add(st, "running", NULL, 1, 1, RRDDIM_ABSOLUTE);
 203                     rrddim_add(st, "blocked", NULL, -1, 1, RRDDIM_ABSOLUTE);
 204                 }
 205                 else rrdset_next(st);
 206
 207                 rrddim_set(st, "running", vmtotal_data.t_rq);
 208                 rrddim_set(st, "blocked", (vmtotal_data.t_dw + vmtotal_data.t_pw));
 209                 rrdset_done(st);
 210             }
 211
 212             // --------------------------------------------------------------------
 213
 214             if (likely(do_committed)) {
 215                 st = rrdset_find("mem.committed");
 216                 if (unlikely(!st)) {
 217                     st = rrdset_create("mem", "committed", NULL, "system", NULL, "Committed (Allocated) Memory", "MB", 5000, update_every, RRDSET_TYPE_AREA);
 218                     st->isdetail = 1;
 219
 220                     rrddim_add(st, "Committed_AS", NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 221                 }
 222                 else rrdset_next(st);
 223
 224                 rrddim_set(st, "Committed_AS", vmtotal_data.t_rm);
 225                 rrdset_done(st);
 226             }
 227         }
 228     }
 229
 230     // --------------------------------------------------------------------
 231
 232     if (likely(do_cpu)) {
 233         if (unlikely(CPUSTATES != 5)) {
 234             error("FREEBSD: There are %d CPU states (5 was expected)", CPUSTATES);
 235             do_cpu = 0;
 236             error("DISABLED: system.cpu");
 237         } else {
 238             if (unlikely(GETSYSCTL("kern.cp_time", cp_time))) {
 239                 do_cpu = 0;
 240                 error("DISABLED: system.cpu");
 241             } else {
 242
 243                 st = rrdset_find_bytype("system", "cpu");
 244                 if (unlikely(!st)) {
 245                     st = rrdset_create("system", "cpu", NULL, "cpu", "system.cpu", "Total CPU utilization", "percentage", 100, update_every, RRDSET_TYPE_STACKED);
 246
 247                     rrddim_add(st, "user", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 248                     rrddim_add(st, "nice", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 249                     rrddim_add(st, "system", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 250                     rrddim_add(st, "interrupt", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 251                     rrddim_add(st, "idle", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 252                     rrddim_hide(st, "idle");
 253                 }
 254                 else rrdset_next(st);
 255
 256                 rrddim_set(st, "user", cp_time[0]);
 257                 rrddim_set(st, "nice", cp_time[1]);
 258                 rrddim_set(st, "system", cp_time[2]);
 259                 rrddim_set(st, "interrupt", cp_time[3]);
 260                 rrddim_set(st, "idle", cp_time[4]);
 261                 rrdset_done(st);
 262             }
 263         }
 264     }
 265
 266     // --------------------------------------------------------------------
 267
 268     if (likely(do_cpu_cores)) {
 269         if (unlikely(CPUSTATES != 5)) {
 270             error("FREEBSD: There are %d CPU states (5 was expected)", CPUSTATES);
 271             do_cpu_cores = 0;
 272             error("DISABLED: cpu.cpuXX");
 273         } else {
 274             if (unlikely(GETSYSCTL("kern.smp.cpus", ncpus))) {
 275                 do_cpu_cores = 0;
 276                 error("DISABLED: cpu.cpuXX");
 277             } else {
 278                 pcpu_cp_time = reallocz(pcpu_cp_time, sizeof(cp_time) * ncpus);
 279
 280                 for (i = 0; i < ncpus; i++) {
 281                     if (unlikely(getsysctl("kern.cp_times", pcpu_cp_time, sizeof(cp_time) * ncpus))) {
 282                         do_cpu_cores = 0;
 283                         error("DISABLED: cpu.cpuXX");
 284                         break;
 285                     }
 286                     if (unlikely(ncpus > 9999)) {
 287                         error("FREEBSD: There are more than 4 digits in cpu cores number");
 288                         do_cpu_cores = 0;
 289                         error("DISABLED: cpu.cpuXX");
 290                         break;
 291                     }
 292                     snprintfz(cpuid, 8, "cpu%d", i);
 293
 294                     st = rrdset_find_bytype("cpu", cpuid);
 295                     if (unlikely(!st)) {
 296                         st = rrdset_create("cpu", cpuid, NULL, "utilization", "cpu.cpu", "Core utilization", "percentage", 1000, update_every, RRDSET_TYPE_STACKED);
 297
 298                         rrddim_add(st, "user", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 299                         rrddim_add(st, "nice", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 300                         rrddim_add(st, "system", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 301                         rrddim_add(st, "interrupt", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 302                         rrddim_add(st, "idle", NULL, 1, 1, RRDDIM_PCENT_OVER_DIFF_TOTAL);
 303                         rrddim_hide(st, "idle");
 304                     }
 305                     else rrdset_next(st);
 306
 307                     rrddim_set(st, "user", pcpu_cp_time[i * 5 + 0]);
 308                     rrddim_set(st, "nice", pcpu_cp_time[i * 5 + 1]);
 309                     rrddim_set(st, "system", pcpu_cp_time[i * 5 + 2]);
 310                     rrddim_set(st, "interrupt", pcpu_cp_time[i * 5 + 3]);
 311                     rrddim_set(st, "idle", pcpu_cp_time[i * 5 + 4]);
 312                     rrdset_done(st);
 313                 }
 314             }
 315         }
 316     }
 317
 318     // --------------------------------------------------------------------
 319
 320     if (likely(do_interrupts)) {
 321         if (unlikely(sysctlbyname("hw.intrcnt", NULL, &intrcnt_size, NULL, 0) == -1)) {
 322             error("FREEBSD: sysctl(hw.intrcnt...) failed: %s", strerror(errno));
 323             do_interrupts = 0;
 324             error("DISABLED: system.intr");
 325         } else {
 326             nintr = intrcnt_size / sizeof(u_long);
 327             intrcnt = reallocz(intrcnt, nintr * sizeof(u_long));
 328             if (unlikely(getsysctl("hw.intrcnt", intrcnt, nintr * sizeof(u_long)))){
 329                 do_interrupts = 0;
 330                 error("DISABLED: system.intr");
 331             } else {
 332                 for (i = 0; i < nintr; i++)
 333                     totalintr += intrcnt[i];
 334
 335                 st = rrdset_find_bytype("system", "intr");
 336                 if (unlikely(!st)) {
 337                     st = rrdset_create("system", "intr", NULL, "interrupts", NULL, "Total Hardware Interrupts", "interrupts/s", 900, update_every, RRDSET_TYPE_LINE);
 338                     st->isdetail = 1;
 339
 340                     rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
 341                 }
 342                 else rrdset_next(st);
 343
 344                 rrddim_set(st, "interrupts", totalintr);
 345                 rrdset_done(st);
 346             }
 347         }
 348     }
 349
 350     // --------------------------------------------------------------------
 351
 352     if (likely(do_dev_intr)) {
 353         if (unlikely(GETSYSCTL("vm.stats.sys.v_intr", u_int_data))) {
 354             do_dev_intr = 0;
 355             error("DISABLED: system.dev_intr");
 356         } else {
 357
 358             st = rrdset_find_bytype("system", "dev_intr");
 359             if (unlikely(!st)) {
 360                 st = rrdset_create("system", "dev_intr", NULL, "interrupts", NULL, "Device Interrupts", "interrupts/s", 1000, update_every, RRDSET_TYPE_LINE);
 361
 362                 rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
 363             }
 364             else rrdset_next(st);
 365
 366             rrddim_set(st, "interrupts", u_int_data);
 367             rrdset_done(st);
 368         }
 369     }
 370
 371     // --------------------------------------------------------------------
 372
 373     if (likely(do_soft_intr)) {
 374         if (unlikely(GETSYSCTL("vm.stats.sys.v_soft", u_int_data))) {
 375             do_soft_intr = 0;
 376             error("DISABLED: system.dev_intr");
 377         } else {
 378
 379             st = rrdset_find_bytype("system", "soft_intr");
 380             if (unlikely(!st)) {
 381                 st = rrdset_create("system", "soft_intr", NULL, "interrupts", NULL, "Software Interrupts", "interrupts/s", 1100, update_every, RRDSET_TYPE_LINE);
 382
 383                 rrddim_add(st, "interrupts", NULL, 1, 1, RRDDIM_INCREMENTAL);
 384             }
 385             else rrdset_next(st);
 386
 387             rrddim_set(st, "interrupts", u_int_data);
 388             rrdset_done(st);
 389         }
 390     }
 391
 392     // --------------------------------------------------------------------
 393
 394     if (likely(do_context)) {
 395         if (unlikely(GETSYSCTL("vm.stats.sys.v_swtch", u_int_data))) {
 396             do_context = 0;
 397             error("DISABLED: system.ctxt");
 398         } else {
 399
 400             st = rrdset_find_bytype("system", "ctxt");
 401             if (unlikely(!st)) {
 402                 st = rrdset_create("system", "ctxt", NULL, "processes", NULL, "CPU Context Switches", "context switches/s", 800, update_every, RRDSET_TYPE_LINE);
 403
 404                 rrddim_add(st, "switches", NULL, 1, 1, RRDDIM_INCREMENTAL);
 405             }
 406             else rrdset_next(st);
 407
 408             rrddim_set(st, "switches", u_int_data);
 409             rrdset_done(st);
 410         }
 411     }
 412
 413     // --------------------------------------------------------------------
 414
 415     if (likely(do_forks)) {
 416         if (unlikely(GETSYSCTL("vm.stats.vm.v_forks", u_int_data))) {
 417             do_forks = 0;
 418             error("DISABLED: system.forks");
 419         } else {
 420
 421             st = rrdset_find_bytype("system", "forks");
 422             if (unlikely(!st)) {
 423                 st = rrdset_create("system", "forks", NULL, "processes", NULL, "Started Processes", "processes/s", 700, update_every, RRDSET_TYPE_LINE);
 424                 st->isdetail = 1;
 425
 426                 rrddim_add(st, "started", NULL, 1, 1, RRDDIM_INCREMENTAL);
 427             }
 428             else rrdset_next(st);
 429
 430             rrddim_set(st, "started", u_int_data);
 431             rrdset_done(st);
 432         }
 433     }
 434
 435     // --------------------------------------------------------------------
 436
 437     if (likely(do_disk_io)) {
 438         if (unlikely(GETSYSCTL("kern.devstat.numdevs", numdevs))) {
 439             do_disk_io = 0;
 440             error("DISABLED: disk.io");
 441         } else {
 442             devstat_data = reallocz(devstat_data, sizeof(long) + sizeof(struct devstat) * numdevs); // there is generation number before devstat structures
 443             if (unlikely(getsysctl("kern.devstat.all", devstat_data, sizeof(long) + sizeof(struct devstat) * numdevs))) {
 444                 do_disk_io = 0;
 445                 error("DISABLED: disk.io");
 446             } else {
 447                 dstat = devstat_data + sizeof(long); // skip generation number
 448                 collected_number total_disk_reads = 0;
 449                 collected_number total_disk_writes = 0;
 450
 451                 for (i = 0; i < numdevs; i++) {
 452                     if ((dstat[i].device_type == (DEVSTAT_TYPE_IF_SCSI | DEVSTAT_TYPE_DIRECT)) || (dstat[i].device_type == (DEVSTAT_TYPE_IF_IDE | DEVSTAT_TYPE_DIRECT))) {
 453
 454                         // --------------------------------------------------------------------
 455
 456                         st = rrdset_find_bytype(RRD_TYPE_DISK, dstat[i].device_name);
 457                         if (unlikely(!st)) {
 458                             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);
 459
 460                             rrddim_add(st, "reads", NULL, 1, 1024, RRDDIM_INCREMENTAL);
 461                             rrddim_add(st, "writes", NULL, -1, 1024, RRDDIM_INCREMENTAL);
 462                         }
 463                         else rrdset_next(st);
 464
 465                         total_disk_reads += dstat[i].bytes[DEVSTAT_READ];
 466                         total_disk_writes += dstat[i].bytes[DEVSTAT_WRITE];
 467                         prev_dstat.bytes_read = rrddim_set(st, "reads", dstat[i].bytes[DEVSTAT_READ]);
 468                         prev_dstat.bytes_write = rrddim_set(st, "writes", dstat[i].bytes[DEVSTAT_WRITE]);
 469                         rrdset_done(st);
 470
 471                         // --------------------------------------------------------------------
 472
 473                         st = rrdset_find_bytype("disk_ops", dstat[i].device_name);
 474                         if (unlikely(!st)) {
 475                             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);
 476                             st->isdetail = 1;
 477
 478                             rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
 479                             rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
 480                         }
 481                         else rrdset_next(st);
 482
 483                         prev_dstat.operations_read = rrddim_set(st, "reads", dstat[i].operations[DEVSTAT_READ]);
 484                         prev_dstat.operations_write = rrddim_set(st, "writes", dstat[i].operations[DEVSTAT_WRITE]);
 485                         rrdset_done(st);
 486
 487                         // --------------------------------------------------------------------
 488
 489                         st = rrdset_find_bytype("disk_qops", dstat[i].device_name);
 490                         if (unlikely(!st)) {
 491                             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);
 492                             st->isdetail = 1;
 493
 494                             rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE);
 495                         }
 496                         else rrdset_next(st);
 497
 498                         rrddim_set(st, "operations", dstat[i].start_count - dstat[i].end_count);
 499                         rrdset_done(st);
 500
 501                         // --------------------------------------------------------------------
 502
 503                         st = rrdset_find_bytype("disk_util", dstat[i].device_name);
 504                         if (unlikely(!st)) {
 505                             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);
 506                             st->isdetail = 1;
 507
 508                             rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL);
 509                         }
 510                         else rrdset_next(st);
 511
 512                         cur_dstat.busy_time_ms = dstat[i].busy_time.sec * 1000 + dstat[i].busy_time.frac * BINTIME_SCALE;
 513                         prev_dstat.busy_time_ms = rrddim_set(st, "utilization", cur_dstat.busy_time_ms);
 514                         rrdset_done(st);
 515
 516                         // --------------------------------------------------------------------
 517
 518                         st = rrdset_find_bytype("disk_iotime", dstat[i].device_name);
 519                         if (unlikely(!st)) {
 520                             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);
 521                             st->isdetail = 1;
 522
 523                             rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
 524                             rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
 525                         }
 526                         else rrdset_next(st);
 527
 528                         cur_dstat.duration_read_ms = dstat[i].duration[DEVSTAT_READ].sec * 1000 + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
 529                         cur_dstat.duration_write_ms = dstat[i].duration[DEVSTAT_WRITE].sec * 1000 + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
 530                         prev_dstat.duration_read_ms = rrddim_set(st, "reads", cur_dstat.duration_read_ms);
 531                         prev_dstat.duration_write_ms = rrddim_set(st, "writes", cur_dstat.duration_write_ms);
 532                         rrdset_done(st);
 533
 534                         // --------------------------------------------------------------------
 535                         // calculate differential charts
 536                         // only if this is not the first time we run
 537
 538                         if (likely(dt)) {
 539
 540                             // --------------------------------------------------------------------
 541
 542                             st = rrdset_find_bytype("disk_await", dstat[i].device_name);
 543                             if (unlikely(!st)) {
 544                                 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);
 545                                 st->isdetail = 1;
 546
 547                                 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE);
 548                                 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE);
 549                             }
 550                             else rrdset_next(st);
 551
 552                             rrddim_set(st, "reads", (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) ?
 553                                 (cur_dstat.duration_read_ms - prev_dstat.duration_read_ms) / (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) : 0);
 554                             rrddim_set(st, "writes", (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) ?
 555                                 (cur_dstat.duration_write_ms - prev_dstat.duration_write_ms) / (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) : 0);
 556                             rrdset_done(st);
 557
 558                             // --------------------------------------------------------------------
 559
 560                             st = rrdset_find_bytype("disk_avgsz", dstat[i].device_name);
 561                             if (unlikely(!st)) {
 562                                 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);
 563                                 st->isdetail = 1;
 564
 565                                 rrddim_add(st, "reads", NULL, 1, 1024, RRDDIM_ABSOLUTE);
 566                                 rrddim_add(st, "writes", NULL, -1, 1024, RRDDIM_ABSOLUTE);
 567                             }
 568                             else rrdset_next(st);
 569
 570                             rrddim_set(st, "reads", (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) ?
 571                                 (dstat[i].bytes[DEVSTAT_READ] - prev_dstat.bytes_read) / (dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) : 0);
 572                             rrddim_set(st, "writes", (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) ?
 573                                 (dstat[i].bytes[DEVSTAT_WRITE] - prev_dstat.bytes_write) / (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write) : 0);
 574                             rrdset_done(st);
 575
 576                             // --------------------------------------------------------------------
 577
 578                             st = rrdset_find_bytype("disk_svctm", dstat[i].device_name);
 579                             if (unlikely(!st)) {
 580                                 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);
 581                                 st->isdetail = 1;
 582
 583                                 rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE);
 584                             }
 585                             else rrdset_next(st);
 586
 587                             rrddim_set(st, "svctm", ((dstat[i].operations[DEVSTAT_READ] - prev_dstat.operations_read) + (dstat[i].operations[DEVSTAT_WRITE] - prev_dstat.operations_write)) ?
 588                                 (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);
 589                             rrdset_done(st);
 590                         }
 591                     }
 592
 593                     // --------------------------------------------------------------------
 594
 595                     st = rrdset_find_bytype("system", "io");
 596                     if (unlikely(!st)) {
 597                         st = rrdset_create("system", "io", NULL, "disk", NULL, "Disk I/O", "kilobytes/s", 150, update_every, RRDSET_TYPE_AREA);
 598                         rrddim_add(st, "in",  NULL,  1, 1024, RRDDIM_INCREMENTAL);
 599                         rrddim_add(st, "out", NULL, -1, 1024, RRDDIM_INCREMENTAL);
 600                     }
 601                     else rrdset_next(st);
 602
 603                     rrddim_set(st, "in", total_disk_reads);
 604                     rrddim_set(st, "out", total_disk_writes);
 605                     rrdset_done(st);
 606                 }
 607             }
 608         }
 609     }
 610
 611     // --------------------------------------------------------------------
 612
 613
 614     if (likely(do_swap)) {
 615         mibsize = sizeof mib / sizeof mib[0];
 616         if (unlikely(sysctlnametomib("vm.swap_info", mib, &mibsize) == -1)) {
 617             error("FREEBSD: sysctl(%s...) failed: %s", "vm.swap_info", strerror(errno));
 618             do_swap = 0;
 619             error("DISABLED: disk.io");
 620         } else {
 621             for (i = 0; ; i++) {
 622                 mib[mibsize] = i;
 623                 size = sizeof(xsw);
 624                 if (unlikely(sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1 )) {
 625                     if (unlikely(errno != ENOENT)) {
 626                         error("FREEBSD: sysctl(%s...) failed: %s", "vm.swap_info", strerror(errno));
 627                         do_swap = 0;
 628                         error("DISABLED: disk.io");
 629                     } else {
 630                         if (unlikely(size != sizeof(xsw))) {
 631                             error("FREEBSD: sysctl(%s...) expected %lu, got %lu", "vm.swap_info", (unsigned long)sizeof(xsw), (unsigned long)size);
 632                             do_swap = 0;
 633                             error("DISABLED: disk.io");
 634                         } else break;
 635                     }
 636                 }
 637                 total_xsw.bytes_used += xsw.xsw_used * system_pagesize;
 638                 total_xsw.bytes_total += xsw.xsw_nblks * system_pagesize;
 639             }
 640
 641             if (likely(do_swap)) {
 642                 st = rrdset_find("system.swap");
 643                 if (unlikely(!st)) {
 644                     st = rrdset_create("system", "swap", NULL, "swap", NULL, "System Swap", "MB", 201, update_every, RRDSET_TYPE_STACKED);
 645                     st->isdetail = 1;
 646
 647                     rrddim_add(st, "free",    NULL, 1, 1048576, RRDDIM_ABSOLUTE);
 648                     rrddim_add(st, "used",    NULL, 1, 1048576, RRDDIM_ABSOLUTE);
 649                 }
 650                 else rrdset_next(st);
 651
 652                 rrddim_set(st, "used", total_xsw.bytes_used);
 653                 rrddim_set(st, "free", total_xsw.bytes_total - total_xsw.bytes_used);
 654                 rrdset_done(st);
 655             }
 656         }
 657     }
 658
 659     // --------------------------------------------------------------------
 660
 661     if (likely(do_ram)) {
 662         if (unlikely(GETSYSCTL("vm.stats.vm.v_active_count",    vmmeter_data.v_active_count) ||
 663                      GETSYSCTL("vm.stats.vm.v_inactive_count",  vmmeter_data.v_inactive_count) ||
 664                      GETSYSCTL("vm.stats.vm.v_wire_count",      vmmeter_data.v_wire_count) ||
 665                      GETSYSCTL("vm.stats.vm.v_cache_count",     vmmeter_data.v_cache_count) ||
 666                      GETSYSCTL("vfs.bufspace",                  vfs_bufspace_count) ||
 667                      GETSYSCTL("vm.stats.vm.v_free_count",      vmmeter_data.v_free_count))) {
 668             do_swapio = 0;
 669             error("DISABLED: system.swapio");
 670         } else {
 671             st = rrdset_find("system.ram");
 672             if (unlikely(!st)) {
 673                 st = rrdset_create("system", "ram", NULL, "ram", NULL, "System RAM", "MB", 200, update_every, RRDSET_TYPE_STACKED);
 674
 675                 rrddim_add(st, "active",    NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 676                 rrddim_add(st, "inactive",  NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 677                 rrddim_add(st, "wired",     NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 678                 rrddim_add(st, "cache",     NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 679                 rrddim_add(st, "buffers",   NULL, 1, 1024, RRDDIM_ABSOLUTE);
 680                 rrddim_add(st, "free",      NULL, system_pagesize, 1024, RRDDIM_ABSOLUTE);
 681             }
 682             else rrdset_next(st);
 683
 684             rrddim_set(st, "active",    vmmeter_data.v_active_count);
 685             rrddim_set(st, "inactive",  vmmeter_data.v_inactive_count);
 686             rrddim_set(st, "wired",     vmmeter_data.v_wire_count);
 687             rrddim_set(st, "cache",     vmmeter_data.v_cache_count);
 688             rrddim_set(st, "buffers",   vfs_bufspace_count);
 689             rrddim_set(st, "free",      vmmeter_data.v_free_count);
 690             rrdset_done(st);
 691         }
 692     }
 693
 694     // --------------------------------------------------------------------
 695
 696     if (likely(do_swapio)) {
 697         if (unlikely(GETSYSCTL("vm.stats.vm.v_swappgsin", vmmeter_data.v_swappgsin) || GETSYSCTL("vm.stats.vm.v_swappgsout", vmmeter_data.v_swappgsout))) {
 698             do_swapio = 0;
 699             error("DISABLED: system.swapio");
 700         } else {
 701             st = rrdset_find("system.swapio");
 702             if (unlikely(!st)) {
 703                 st = rrdset_create("system", "swapio", NULL, "swap", NULL, "Swap I/O", "kilobytes/s", 250, update_every, RRDSET_TYPE_AREA);
 704
 705                 rrddim_add(st, "in",  NULL, system_pagesize, 1024, RRDDIM_INCREMENTAL);
 706                 rrddim_add(st, "out", NULL, -system_pagesize, 1024, RRDDIM_INCREMENTAL);
 707             }
 708             else rrdset_next(st);
 709
 710             rrddim_set(st, "in", vmmeter_data.v_swappgsin);
 711             rrddim_set(st, "out", vmmeter_data.v_swappgsout);
 712             rrdset_done(st);
 713         }
 714     }
 715
 716     // --------------------------------------------------------------------
 717
 718     if (likely(do_pgfaults)) {
 719         if (unlikely(GETSYSCTL("vm.stats.vm.v_vm_faults",   vmmeter_data.v_vm_faults) ||
 720                      GETSYSCTL("vm.stats.vm.v_io_faults",   vmmeter_data.v_io_faults) ||
 721                      GETSYSCTL("vm.stats.vm.v_cow_faults",  vmmeter_data.v_cow_faults) ||
 722                      GETSYSCTL("vm.stats.vm.v_cow_optim",   vmmeter_data.v_cow_optim) ||
 723                      GETSYSCTL("vm.stats.vm.v_intrans",     vmmeter_data.v_intrans))) {
 724             do_pgfaults = 0;
 725             error("DISABLED: mem.pgfaults");
 726         } else {
 727             st = rrdset_find("mem.pgfaults");
 728             if (unlikely(!st)) {
 729                 st = rrdset_create("mem", "pgfaults", NULL, "system", NULL, "Memory Page Faults", "page faults/s", 500, update_every, RRDSET_TYPE_LINE);
 730                 st->isdetail = 1;
 731
 732                 rrddim_add(st, "memory", NULL, 1, 1, RRDDIM_INCREMENTAL);
 733                 rrddim_add(st, "io_requiring", NULL, 1, 1, RRDDIM_INCREMENTAL);
 734                 rrddim_add(st, "cow", NULL, 1, 1, RRDDIM_INCREMENTAL);
 735                 rrddim_add(st, "cow_optimized", NULL, 1, 1, RRDDIM_INCREMENTAL);
 736                 rrddim_add(st, "in_transit", NULL, 1, 1, RRDDIM_INCREMENTAL);
 737             }
 738             else rrdset_next(st);
 739
 740             rrddim_set(st, "memory", vmmeter_data.v_vm_faults);
 741             rrddim_set(st, "io_requiring", vmmeter_data.v_io_faults);
 742             rrddim_set(st, "cow", vmmeter_data.v_cow_faults);
 743             rrddim_set(st, "cow_optimized", vmmeter_data.v_cow_optim);
 744             rrddim_set(st, "in_transit", vmmeter_data.v_intrans);
 745             rrdset_done(st);
 746         }
 747     }
 748
 749     // --------------------------------------------------------------------
 750
 751     if (likely(do_ipc_semaphores)) {
 752         if (unlikely(GETSYSCTL("kern.ipc.semmni", ipc_sem.semmni))) {
 753             do_ipc_semaphores = 0;
 754             error("DISABLED: system.ipc_semaphores");
 755             error("DISABLED: system.ipc_semaphore_arrays");
 756         } else {
 757             ipc_sem_data = reallocz(ipc_sem_data, sizeof(struct semid_kernel) * ipc_sem.semmni);
 758             if (unlikely(getsysctl("kern.ipc.sema", ipc_sem_data, sizeof(struct semid_kernel) * ipc_sem.semmni))) {
 759                 do_ipc_semaphores = 0;
 760                 error("DISABLED: system.ipc_semaphores");
 761                 error("DISABLED: system.ipc_semaphore_arrays");
 762             } else {
 763                 for (i = 0; i < ipc_sem.semmni; i++) {
 764                     if (unlikely(ipc_sem_data[i].u.sem_perm.mode & SEM_ALLOC)) {
 765                         ipc_sem.sets += 1;
 766                         ipc_sem.semaphores += ipc_sem_data[i].u.sem_nsems;
 767                     }
 768                 }
 769
 770                 // --------------------------------------------------------------------
 771
 772                 st = rrdset_find("system.ipc_semaphores");
 773                 if (unlikely(!st)) {
 774                     st = rrdset_create("system", "ipc_semaphores", NULL, "ipc semaphores", NULL, "IPC Semaphores", "semaphores", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 775                     rrddim_add(st, "semaphores", NULL, 1, 1, RRDDIM_ABSOLUTE);
 776                 }
 777                 else rrdset_next(st);
 778
 779                 rrddim_set(st, "semaphores", ipc_sem.semaphores);
 780                 rrdset_done(st);
 781
 782                 // --------------------------------------------------------------------
 783
 784                 st = rrdset_find("system.ipc_semaphore_arrays");
 785                 if (unlikely(!st)) {
 786                     st = rrdset_create("system", "ipc_semaphore_arrays", NULL, "ipc semaphores", NULL, "IPC Semaphore Arrays", "arrays", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 787                     rrddim_add(st, "arrays", NULL, 1, 1, RRDDIM_ABSOLUTE);
 788                 }
 789                 else rrdset_next(st);
 790
 791                 rrddim_set(st, "arrays", ipc_sem.sets);
 792                 rrdset_done(st);
 793             }
 794         }
 795     }
 796
 797     // --------------------------------------------------------------------
 798
 799     if (likely(do_ipc_shared_mem)) {
 800         if (unlikely(GETSYSCTL("kern.ipc.shmmni", ipc_shm.shmmni))) {
 801             do_ipc_shared_mem = 0;
 802             error("DISABLED: system.ipc_shared_mem_segs");
 803             error("DISABLED: system.ipc_shared_mem_size");
 804         } else {
 805             ipc_shm_data = reallocz(ipc_shm_data, sizeof(struct shmid_kernel) * ipc_shm.shmmni);
 806             if (unlikely(getsysctl("kern.ipc.shmsegs", ipc_shm_data, sizeof(struct shmid_kernel) * ipc_shm.shmmni))) {
 807                 do_ipc_shared_mem = 0;
 808                 error("DISABLED: system.ipc_shared_mem_segs");
 809                 error("DISABLED: system.ipc_shared_mem_size");
 810             } else {
 811                 for (i = 0; i < ipc_shm.shmmni; i++) {
 812                     if (unlikely(ipc_shm_data[i].u.shm_perm.mode & 0x0800)) {
 813                         ipc_shm.segs += 1;
 814                         ipc_shm.segsize += ipc_shm_data[i].u.shm_segsz;
 815                     }
 816                 }
 817
 818                 // --------------------------------------------------------------------
 819
 820                 st = rrdset_find("system.ipc_shared_mem_segs");
 821                 if (unlikely(!st)) {
 822                     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);
 823                     rrddim_add(st, "segments", NULL, 1, 1, RRDDIM_ABSOLUTE);
 824                 }
 825                 else rrdset_next(st);
 826
 827                 rrddim_set(st, "segments", ipc_shm.segs);
 828                 rrdset_done(st);
 829
 830                 // --------------------------------------------------------------------
 831
 832                 st = rrdset_find("system.ipc_shared_mem_size");
 833                 if (unlikely(!st)) {
 834                     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);
 835                     rrddim_add(st, "allocated", NULL, 1, 1024, RRDDIM_ABSOLUTE);
 836                 }
 837                 else rrdset_next(st);
 838
 839                 rrddim_set(st, "allocated", ipc_shm.segsize);
 840                 rrdset_done(st);
 841             }
 842         }
 843     }
 844
 845     // --------------------------------------------------------------------
 846
 847     if (likely(do_ipc_msg_queues)) {
 848         if (unlikely(GETSYSCTL("kern.ipc.msgmni", ipc_msq.msgmni))) {
 849             do_ipc_msg_queues = 0;
 850             error("DISABLED: system.ipc_msq_queues");
 851             error("DISABLED: system.ipc_msq_messages");
 852             error("DISABLED: system.ipc_msq_size");
 853         } else {
 854             ipc_msq_data = reallocz(ipc_msq_data, sizeof(struct msqid_kernel) * ipc_msq.msgmni);
 855             if (unlikely(getsysctl("kern.ipc.msqids", ipc_msq_data, sizeof(struct msqid_kernel) * ipc_msq.msgmni))) {
 856                 do_ipc_msg_queues = 0;
 857                 error("DISABLED: system.ipc_msq_queues");
 858                 error("DISABLED: system.ipc_msq_messages");
 859                 error("DISABLED: system.ipc_msq_size");
 860             } else {
 861                 for (i = 0; i < ipc_msq.msgmni; i++) {
 862                     if (unlikely(ipc_msq_data[i].u.msg_qbytes != 0)) {
 863                         ipc_msq.queues += 1;
 864                         ipc_msq.messages += ipc_msq_data[i].u.msg_qnum;
 865                         ipc_msq.usedsize += ipc_msq_data[i].u.msg_cbytes;
 866                         ipc_msq.allocsize += ipc_msq_data[i].u.msg_qbytes;
 867                     }
 868                 }
 869
 870                 // --------------------------------------------------------------------
 871
 872                 st = rrdset_find("system.ipc_msq_queues");
 873                 if (unlikely(!st)) {
 874                     st = rrdset_create("system", "ipc_msq_queues", NULL, "ipc message queues", NULL, "Number of IPC Message Queues", "queues", 900, rrd_update_every, RRDSET_TYPE_AREA);
 875                     rrddim_add(st, "queues", NULL, 1, 1, RRDDIM_ABSOLUTE);
 876                 }
 877                 else rrdset_next(st);
 878
 879                 rrddim_set(st, "queues", ipc_msq.queues);
 880                 rrdset_done(st);
 881
 882                 // --------------------------------------------------------------------
 883
 884                 st = rrdset_find("system.ipc_msq_messages");
 885                 if (unlikely(!st)) {
 886                     st = rrdset_create("system", "ipc_msq_messages", NULL, "ipc message queues", NULL, "Number of Messages in IPC Message Queues", "messages", 1000, rrd_update_every, RRDSET_TYPE_AREA);
 887                     rrddim_add(st, "messages", NULL, 1, 1, RRDDIM_ABSOLUTE);
 888                 }
 889                 else rrdset_next(st);
 890
 891                 rrddim_set(st, "messages", ipc_msq.messages);
 892                 rrdset_done(st);
 893
 894                 // --------------------------------------------------------------------
 895
 896                 st = rrdset_find("system.ipc_msq_size");
 897                 if (unlikely(!st)) {
 898                     st = rrdset_create("system", "ipc_msq_size", NULL, "ipc message queues", NULL, "Size of IPC Message Queues", "bytes", 1100, rrd_update_every, RRDSET_TYPE_LINE);
 899                     rrddim_add(st, "allocated", NULL, 1, 1, RRDDIM_ABSOLUTE);
 900                     rrddim_add(st, "used", NULL, 1, 1, RRDDIM_ABSOLUTE);
 901                 }
 902                 else rrdset_next(st);
 903
 904                 rrddim_set(st, "allocated", ipc_msq.allocsize);
 905                 rrddim_set(st, "used", ipc_msq.usedsize);
 906                 rrdset_done(st);
 907
 908             }
 909         }
 910     }
 911
 912     return 0;
 913 }