3 #define RRD_TYPE_DISK "disk"
5 #define DISK_TYPE_PHYSICAL 1
6 #define DISK_TYPE_PARTITION 2
7 #define DISK_TYPE_CONTAINER 3
9 #ifndef NETDATA_RELOAD_MOUNTINFO_EVERY
10 #define NETDATA_RELOAD_MOUNTINFO_EVERY 10
14 char *disk; // the name of the disk (sda, sdb, etc)
22 // disk options caching
35 static struct mountinfo *disk_mountinfo_root = NULL;
37 static inline void mountinfo_reload(int force) {
38 static time_t last_loaded = 0;
39 time_t now = now_realtime_sec();
41 if(force || now - last_loaded >= NETDATA_RELOAD_MOUNTINFO_EVERY) {
42 //#ifdef NETDATA_INTERNAL_CHECKS
43 // info("Reloading mountinfo");
46 // mountinfo_free() can be called with NULL disk_mountinfo_root
47 mountinfo_free(disk_mountinfo_root);
49 // re-read mountinfo in case something changed
50 disk_mountinfo_root = mountinfo_read();
57 // linked list of mount points that are by default disabled
58 static struct excluded_mount_point {
61 struct excluded_mount_point *next;
62 } *excluded_mount_points = NULL;
64 static inline int is_mount_point_excluded(const char *mount_point) {
65 static int initialized = 0;
67 if(unlikely(!initialized)) {
70 char *a = config_get("plugin:proc:/proc/diskstats", "exclude space metrics on paths", "/proc/ /sys/ /var/run/user/ /run/user/");
76 while(isspace(*s)) s++;
79 if(unlikely(!*s)) break;
81 // find the next space
83 while(*c && !isspace(*c)) c++;
86 if(likely(*c)) n = c + 1;
89 // terminate our string
92 // allocate the structure
93 struct excluded_mount_point *m = mallocz(sizeof(struct excluded_mount_point));
94 m->prefix = strdup(s);
95 m->len = strlen(m->prefix);
96 m->next = excluded_mount_points;
97 excluded_mount_points = m;
99 // prepare for next loop
101 if(likely(n)) *c = ' ';
106 size_t len = strlen(mount_point);
107 struct excluded_mount_point *m;
108 for(m = excluded_mount_points; m ; m = m->next) {
110 // fprintf(stderr, "SPACE: comparing '%s' with '%s'\n", mount_point, m->prefix);
111 if(unlikely(strncmp(m->prefix, mount_point, m->len) == 0)) {
112 // fprintf(stderr, "SPACE: excluded '%s'\n", mount_point);
118 // fprintf(stderr, "SPACE: included '%s'\n", mount_point);
122 // Data to be stored in DICTIONARY mount_points used by do_disk_space_stats().
123 // This DICTIONARY is used to lookup the settings of the mount point on each iteration.
124 struct mount_point_metadata {
129 static inline void do_disk_space_stats(struct mountinfo *mi, int update_every, usec_t dt) {
132 const char *family = mi->mount_point;
133 const char *disk = mi->persistent_id;
135 static DICTIONARY *mount_points = NULL;
136 int do_space, do_inodes;
138 if(unlikely(!mount_points)) {
139 mount_points = dictionary_create(DICTIONARY_FLAG_SINGLE_THREADED);
142 struct mount_point_metadata *m = dictionary_get(mount_points, mi->mount_point);
144 char var_name[4096 + 1];
145 snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", mi->mount_point);
147 int def_space = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space usage for all disks", CONFIG_ONDEMAND_ONDEMAND);
148 int def_inodes = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "inodes usage for all disks", CONFIG_ONDEMAND_ONDEMAND);
150 if(unlikely(is_mount_point_excluded(mi->mount_point))) {
151 def_space = CONFIG_ONDEMAND_NO;
152 def_inodes = CONFIG_ONDEMAND_NO;
155 do_space = config_get_boolean_ondemand(var_name, "space usage", def_space);
156 do_inodes = config_get_boolean_ondemand(var_name, "inodes usage", def_inodes);
158 struct mount_point_metadata mp = {
159 .do_space = do_space,
160 .do_inodes = do_inodes
163 dictionary_set(mount_points, mi->mount_point, &mp, sizeof(struct mount_point_metadata));
166 do_space = m->do_space;
167 do_inodes = m->do_inodes;
170 if(unlikely(do_space == CONFIG_ONDEMAND_NO && do_inodes == CONFIG_ONDEMAND_NO))
173 struct statvfs buff_statvfs;
174 if (statvfs(mi->mount_point, &buff_statvfs) < 0) {
175 error("Failed statvfs() for '%s' (disk '%s')", mi->mount_point, disk);
179 // taken from get_fs_usage() found in coreutils
180 unsigned long bsize = (buff_statvfs.f_frsize) ? buff_statvfs.f_frsize : buff_statvfs.f_bsize;
182 fsblkcnt_t bavail = buff_statvfs.f_bavail;
183 fsblkcnt_t btotal = buff_statvfs.f_blocks;
184 fsblkcnt_t bavail_root = buff_statvfs.f_bfree;
185 fsblkcnt_t breserved_root = bavail_root - bavail;
187 if(likely(btotal >= bavail_root))
188 bused = btotal - bavail_root;
190 bused = bavail_root - btotal;
192 #ifdef NETDATA_INTERNAL_CHECKS
193 if(unlikely(btotal != bavail + breserved_root + bused))
194 error("Disk block statistics for '%s' (disk '%s') do not sum up: total = %llu, available = %llu, reserved = %llu, used = %llu", mi->mount_point, disk, (unsigned long long)btotal, (unsigned long long)bavail, (unsigned long long)breserved_root, (unsigned long long)bused);
197 // --------------------------------------------------------------------------
199 fsfilcnt_t favail = buff_statvfs.f_favail;
200 fsfilcnt_t ftotal = buff_statvfs.f_files;
201 fsfilcnt_t favail_root = buff_statvfs.f_ffree;
202 fsfilcnt_t freserved_root = favail_root - favail;
203 fsfilcnt_t fused = ftotal - favail_root;
205 #ifdef NETDATA_INTERNAL_CHECKS
206 if(unlikely(btotal != bavail + breserved_root + bused))
207 error("Disk inode statistics for '%s' (disk '%s') do not sum up: total = %llu, available = %llu, reserved = %llu, used = %llu", mi->mount_point, disk, (unsigned long long)ftotal, (unsigned long long)favail, (unsigned long long)freserved_root, (unsigned long long)fused);
210 // --------------------------------------------------------------------------
214 if(do_space == CONFIG_ONDEMAND_YES || (do_space == CONFIG_ONDEMAND_ONDEMAND && (bavail || breserved_root || bused))) {
215 st = rrdset_find_bytype("disk_space", disk);
217 char title[4096 + 1];
218 snprintfz(title, 4096, "Disk Space Usage for %s [%s]", family, mi->mount_source);
219 st = rrdset_create("disk_space", disk, NULL, family, "disk.space", title, "GB", 2023, update_every, RRDSET_TYPE_STACKED);
221 rrddim_add(st, "avail", NULL, bsize, 1024*1024*1024, RRDDIM_ABSOLUTE);
222 rrddim_add(st, "used" , NULL, bsize, 1024*1024*1024, RRDDIM_ABSOLUTE);
223 rrddim_add(st, "reserved_for_root", "reserved for root", bsize, 1024*1024*1024, RRDDIM_ABSOLUTE);
225 else rrdset_next(st);
227 rrddim_set(st, "avail", (collected_number)bavail);
228 rrddim_set(st, "used", (collected_number)bused);
229 rrddim_set(st, "reserved_for_root", (collected_number)breserved_root);
233 // --------------------------------------------------------------------------
235 if(do_inodes == CONFIG_ONDEMAND_YES || (do_inodes == CONFIG_ONDEMAND_ONDEMAND && (favail || freserved_root || fused))) {
236 st = rrdset_find_bytype("disk_inodes", disk);
238 char title[4096 + 1];
239 snprintfz(title, 4096, "Disk Files (inodes) Usage for %s [%s]", family, mi->mount_source);
240 st = rrdset_create("disk_inodes", disk, NULL, family, "disk.inodes", title, "Inodes", 2024, update_every, RRDSET_TYPE_STACKED);
242 rrddim_add(st, "avail", NULL, 1, 1, RRDDIM_ABSOLUTE);
243 rrddim_add(st, "used" , NULL, 1, 1, RRDDIM_ABSOLUTE);
244 rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1, RRDDIM_ABSOLUTE);
246 else rrdset_next(st);
248 rrddim_set(st, "avail", (collected_number)favail);
249 rrddim_set(st, "used", (collected_number)fused);
250 rrddim_set(st, "reserved_for_root", (collected_number)freserved_root);
255 static struct disk *get_disk(unsigned long major, unsigned long minor, char *disk) {
256 static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = "";
257 static char path_to_get_hw_sector_size_partitions[FILENAME_MAX + 1] = "";
258 static char path_find_block_device[FILENAME_MAX + 1] = "";
261 // search for it in our RAM list.
262 // this is sequential, but since we just walk through
263 // and the number of disks / partitions in a system
264 // should not be that many, it should be acceptable
265 for(d = disk_root; d ; d = d->next)
266 if(unlikely(d->major == major && d->minor == minor))
269 // if we found it, return it
274 // create a new disk structure
275 d = (struct disk *)mallocz(sizeof(struct disk));
277 d->disk = strdupz(disk);
280 d->type = DISK_TYPE_PHYSICAL; // Default type. Changed later if not correct.
282 d->sector_size = 512; // the default, will be changed below
285 // append it to the list
286 if(unlikely(!disk_root))
290 for(last = disk_root; last->next ;last = last->next);
294 // ------------------------------------------------------------------------
295 // find the type of the device
297 char buffer[FILENAME_MAX + 1];
299 // get the default path for finding info about the block device
300 if(unlikely(!path_find_block_device[0])) {
301 snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/%s");
302 snprintfz(path_find_block_device, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get block device infos", buffer));
305 // find if it is a partition
306 // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable.
307 snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "partition");
308 if(likely(access(buffer, R_OK) == 0)) {
309 d->type = DISK_TYPE_PARTITION;
312 // find if it is a container
313 // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries
314 snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "slaves/");
315 DIR *dirp = opendir(buffer);
316 if(likely(dirp != NULL)) {
318 while( (dp = readdir(dirp)) ) {
319 // . and .. are also files in empty folders.
320 if(unlikely(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)) {
324 d->type = DISK_TYPE_CONTAINER;
326 // Stop the loop after we found one file.
329 if(unlikely(closedir(dirp) == -1))
330 error("Unable to close dir %s", buffer);
334 // ------------------------------------------------------------------------
335 // check if we can find its mount point
337 // mountinfo_find() can be called with NULL disk_mountinfo_root
338 struct mountinfo *mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor);
340 d->mount_point = strdupz(mi->mount_point);
342 d->mount_point = NULL;
344 // ------------------------------------------------------------------------
345 // find the disk sector size
347 if(unlikely(!path_to_get_hw_sector_size[0])) {
348 snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/block/%s/queue/hw_sector_size");
349 snprintfz(path_to_get_hw_sector_size, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size", buffer));
351 if(unlikely(!path_to_get_hw_sector_size_partitions[0])) {
352 snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size");
353 snprintfz(path_to_get_hw_sector_size_partitions, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size for partitions", buffer));
357 char tf[FILENAME_MAX + 1], *t;
358 strncpyz(tf, d->disk, FILENAME_MAX);
360 // replace all / with !
362 if(unlikely(*t == '/')) *t = '!';
364 if(likely(d->type == DISK_TYPE_PARTITION))
365 snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size_partitions, d->major, d->minor, tf);
367 snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size, tf);
369 FILE *fpss = fopen(buffer, "r");
371 char buffer2[1024 + 1];
372 char *tmp = fgets(buffer2, 1024, fpss);
375 d->sector_size = atoi(tmp);
376 if(unlikely(d->sector_size <= 0)) {
377 error("Invalid sector size %d for device %s in %s. Assuming 512.", d->sector_size, d->disk, buffer);
378 d->sector_size = 512;
381 else error("Cannot read data for sector size for device %s from %s. Assuming 512.", d->disk, buffer);
385 else error("Cannot read sector size for device %s from %s. Assuming 512.", d->disk, buffer);
391 static inline int select_positive_option(int option1, int option2) {
392 if(unlikely(option1 == CONFIG_ONDEMAND_YES || option2 == CONFIG_ONDEMAND_YES))
393 return CONFIG_ONDEMAND_YES;
394 else if(unlikely(option1 == CONFIG_ONDEMAND_ONDEMAND || option2 == CONFIG_ONDEMAND_ONDEMAND))
395 return CONFIG_ONDEMAND_ONDEMAND;
397 return CONFIG_ONDEMAND_NO;
400 static inline int is_major_enabled(int major) {
401 static char *major_configs = NULL;
402 static size_t major_size = 0;
404 if(major < 0) return 1;
406 size_t wanted_size = (size_t)major + 1;
408 if(major_size < wanted_size) {
409 major_configs = reallocz(major_configs, wanted_size);
412 for(i = major_size; i < wanted_size ; i++)
413 major_configs[i] = -1;
415 major_size = wanted_size;
418 if(major_configs[major] == -1) {
419 char buffer[CONFIG_MAX_NAME + 1];
420 snprintfz(buffer, CONFIG_MAX_NAME, "performance metrics for disks with major %d", major);
421 major_configs[major] = (char)config_get_boolean("plugin:proc:/proc/diskstats", buffer, 1);
424 return major_configs[major];
427 int do_proc_diskstats(int update_every, usec_t dt) {
430 static procfile *ff = NULL;
431 static int global_enable_new_disks_detected_at_runtime = CONFIG_ONDEMAND_YES,
432 global_enable_performance_for_physical_disks = CONFIG_ONDEMAND_ONDEMAND,
433 global_enable_performance_for_virtual_disks = CONFIG_ONDEMAND_NO,
434 global_enable_performance_for_partitions = CONFIG_ONDEMAND_NO,
435 global_do_io = CONFIG_ONDEMAND_ONDEMAND,
436 global_do_ops = CONFIG_ONDEMAND_ONDEMAND,
437 global_do_mops = CONFIG_ONDEMAND_ONDEMAND,
438 global_do_iotime = CONFIG_ONDEMAND_ONDEMAND,
439 global_do_qops = CONFIG_ONDEMAND_ONDEMAND,
440 global_do_util = CONFIG_ONDEMAND_ONDEMAND,
441 global_do_backlog = CONFIG_ONDEMAND_ONDEMAND,
442 globals_initialized = 0;
444 if(unlikely(!globals_initialized)) {
445 global_enable_new_disks_detected_at_runtime = config_get_boolean("plugin:proc:/proc/diskstats", "enable new disks detected at runtime", global_enable_new_disks_detected_at_runtime);
447 global_enable_performance_for_physical_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for physical disks", global_enable_performance_for_physical_disks);
448 global_enable_performance_for_virtual_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for virtual disks", global_enable_performance_for_virtual_disks);
449 global_enable_performance_for_partitions = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for partitions", global_enable_performance_for_partitions);
451 global_do_io = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "bandwidth for all disks", global_do_io);
452 global_do_ops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "operations for all disks", global_do_ops);
453 global_do_mops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "merged operations for all disks", global_do_mops);
454 global_do_iotime = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "i/o time for all disks", global_do_iotime);
455 global_do_qops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "queued operations for all disks", global_do_qops);
456 global_do_util = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "utilization percentage for all disks", global_do_util);
457 global_do_backlog = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "backlog for all disks", global_do_backlog);
459 globals_initialized = 1;
462 // --------------------------------------------------------------------------
463 // this is smart enough not to reload it every time
467 // --------------------------------------------------------------------------
468 // disk space metrics
470 struct mountinfo *mi;
471 for(mi = disk_mountinfo_root; mi ;mi = mi->next) {
472 if(unlikely(mi->flags & (MOUNTINFO_IS_DUMMY|MOUNTINFO_IS_BIND|MOUNTINFO_IS_SAME_DEV|MOUNTINFO_NO_STAT|MOUNTINFO_NO_SIZE|MOUNTINFO_READONLY)))
475 do_disk_space_stats(mi, update_every, dt);
478 // --------------------------------------------------------------------------
481 char filename[FILENAME_MAX + 1];
482 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/diskstats");
483 ff = procfile_open(config_get("plugin:proc:/proc/diskstats", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
485 if(unlikely(!ff)) return 0;
487 ff = procfile_readall(ff);
488 if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
490 uint32_t lines = procfile_lines(ff), l;
492 for(l = 0; l < lines ;l++) {
493 // --------------------------------------------------------------------------
497 unsigned long major = 0, minor = 0;
499 collected_number reads = 0, mreads = 0, readsectors = 0, readms = 0,
500 writes = 0, mwrites = 0, writesectors = 0, writems = 0,
501 queued_ios = 0, busy_ms = 0, backlog_ms = 0;
503 collected_number last_reads = 0, last_readsectors = 0, last_readms = 0,
504 last_writes = 0, last_writesectors = 0, last_writems = 0,
507 uint32_t words = procfile_linewords(ff, l);
508 if(unlikely(words < 14)) continue;
510 major = strtoul(procfile_lineword(ff, l, 0), NULL, 10);
511 minor = strtoul(procfile_lineword(ff, l, 1), NULL, 10);
512 disk = procfile_lineword(ff, l, 2);
514 // # of reads completed # of writes completed
515 // This is the total number of reads or writes completed successfully.
516 reads = strtoull(procfile_lineword(ff, l, 3), NULL, 10); // rd_ios
517 writes = strtoull(procfile_lineword(ff, l, 7), NULL, 10); // wr_ios
519 // # of reads merged # of writes merged
520 // Reads and writes which are adjacent to each other may be merged for
521 // efficiency. Thus two 4K reads may become one 8K read before it is
522 // ultimately handed to the disk, and so it will be counted (and queued)
523 mreads = strtoull(procfile_lineword(ff, l, 4), NULL, 10); // rd_merges_or_rd_sec
524 mwrites = strtoull(procfile_lineword(ff, l, 8), NULL, 10); // wr_merges
526 // # of sectors read # of sectors written
527 // This is the total number of sectors read or written successfully.
528 readsectors = strtoull(procfile_lineword(ff, l, 5), NULL, 10); // rd_sec_or_wr_ios
529 writesectors = strtoull(procfile_lineword(ff, l, 9), NULL, 10); // wr_sec
531 // # of milliseconds spent reading # of milliseconds spent writing
532 // This is the total number of milliseconds spent by all reads or writes (as
533 // measured from __make_request() to end_that_request_last()).
534 readms = strtoull(procfile_lineword(ff, l, 6), NULL, 10); // rd_ticks_or_wr_sec
535 writems = strtoull(procfile_lineword(ff, l, 10), NULL, 10); // wr_ticks
537 // # of I/Os currently in progress
538 // The only field that should go to zero. Incremented as requests are
539 // given to appropriate struct request_queue and decremented as they finish.
540 queued_ios = strtoull(procfile_lineword(ff, l, 11), NULL, 10); // ios_pgr
542 // # of milliseconds spent doing I/Os
543 // This field increases so long as field queued_ios is nonzero.
544 busy_ms = strtoull(procfile_lineword(ff, l, 12), NULL, 10); // tot_ticks
546 // weighted # of milliseconds spent doing I/Os
547 // This field is incremented at each I/O start, I/O completion, I/O
548 // merge, or read of these stats by the number of I/Os in progress
549 // (field queued_ios) times the number of milliseconds spent doing I/O since the
550 // last update of this field. This can provide an easy measure of both
551 // I/O completion time and the backlog that may be accumulating.
552 backlog_ms = strtoull(procfile_lineword(ff, l, 13), NULL, 10); // rq_ticks
555 // --------------------------------------------------------------------------
556 // remove slashes from disk names
558 for(s = disk; *s ;s++)
559 if(*s == '/') *s = '_';
561 // --------------------------------------------------------------------------
562 // get a disk structure for the disk
564 struct disk *d = get_disk(major, minor, disk);
567 // --------------------------------------------------------------------------
568 // Set its family based on mount point
570 char *family = d->mount_point;
571 if(!family) family = disk;
574 // --------------------------------------------------------------------------
575 // Check the configuration for the device
577 if(unlikely(!d->configured)) {
578 char var_name[4096 + 1];
579 snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", disk);
581 int def_enable = config_get_boolean_ondemand(var_name, "enable", global_enable_new_disks_detected_at_runtime);
582 if(unlikely(def_enable == CONFIG_ONDEMAND_NO)) {
583 // the user does not want any metrics for this disk
584 d->do_io = CONFIG_ONDEMAND_NO;
585 d->do_ops = CONFIG_ONDEMAND_NO;
586 d->do_mops = CONFIG_ONDEMAND_NO;
587 d->do_iotime = CONFIG_ONDEMAND_NO;
588 d->do_qops = CONFIG_ONDEMAND_NO;
589 d->do_util = CONFIG_ONDEMAND_NO;
590 d->do_backlog = CONFIG_ONDEMAND_NO;
593 // this disk is enabled
594 // check its direct settings
596 int def_performance = CONFIG_ONDEMAND_ONDEMAND;
598 // since this is 'on demand' we can figure the performance settings
599 // based on the type of disk
602 case DISK_TYPE_PHYSICAL:
603 def_performance = global_enable_performance_for_physical_disks;
606 case DISK_TYPE_PARTITION:
607 def_performance = global_enable_performance_for_partitions;
610 case DISK_TYPE_CONTAINER:
611 def_performance = global_enable_performance_for_virtual_disks;
615 // check if we have to disable performance for this disk
617 def_performance = is_major_enabled((int)major);
619 // ------------------------------------------------------------
620 // now we have def_performance and def_space
624 // check the user configuration (this will also show our 'on demand' decision)
625 def_performance = config_get_boolean_ondemand(var_name, "enable performance metrics", def_performance);
627 int ddo_io = CONFIG_ONDEMAND_NO,
628 ddo_ops = CONFIG_ONDEMAND_NO,
629 ddo_mops = CONFIG_ONDEMAND_NO,
630 ddo_iotime = CONFIG_ONDEMAND_NO,
631 ddo_qops = CONFIG_ONDEMAND_NO,
632 ddo_util = CONFIG_ONDEMAND_NO,
633 ddo_backlog = CONFIG_ONDEMAND_NO;
635 // we enable individual performance charts only when def_performance is not disabled
636 if(unlikely(def_performance != CONFIG_ONDEMAND_NO)) {
637 ddo_io = global_do_io,
638 ddo_ops = global_do_ops,
639 ddo_mops = global_do_mops,
640 ddo_iotime = global_do_iotime,
641 ddo_qops = global_do_qops,
642 ddo_util = global_do_util,
643 ddo_backlog = global_do_backlog;
646 d->do_io = config_get_boolean_ondemand(var_name, "bandwidth", ddo_io);
647 d->do_ops = config_get_boolean_ondemand(var_name, "operations", ddo_ops);
648 d->do_mops = config_get_boolean_ondemand(var_name, "merged operations", ddo_mops);
649 d->do_iotime = config_get_boolean_ondemand(var_name, "i/o time", ddo_iotime);
650 d->do_qops = config_get_boolean_ondemand(var_name, "queued operations", ddo_qops);
651 d->do_util = config_get_boolean_ondemand(var_name, "utilization percentage", ddo_util);
652 d->do_backlog = config_get_boolean_ondemand(var_name, "backlog", ddo_backlog);
660 // --------------------------------------------------------------------------
661 // Do performance metrics
663 if(d->do_io == CONFIG_ONDEMAND_YES || (d->do_io == CONFIG_ONDEMAND_ONDEMAND && (readsectors || writesectors))) {
664 d->do_io = CONFIG_ONDEMAND_YES;
666 st = rrdset_find_bytype(RRD_TYPE_DISK, disk);
668 st = rrdset_create(RRD_TYPE_DISK, disk, NULL, family, "disk.io", "Disk I/O Bandwidth", "kilobytes/s", 2000, update_every, RRDSET_TYPE_AREA);
670 rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_INCREMENTAL);
671 rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_INCREMENTAL);
673 else rrdset_next(st);
675 last_readsectors = rrddim_set(st, "reads", readsectors);
676 last_writesectors = rrddim_set(st, "writes", writesectors);
680 // --------------------------------------------------------------------
682 if(d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes))) {
683 d->do_ops = CONFIG_ONDEMAND_YES;
685 st = rrdset_find_bytype("disk_ops", disk);
687 st = rrdset_create("disk_ops", disk, NULL, family, "disk.ops", "Disk Completed I/O Operations", "operations/s", 2001, update_every, RRDSET_TYPE_LINE);
690 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
691 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
693 else rrdset_next(st);
695 last_reads = rrddim_set(st, "reads", reads);
696 last_writes = rrddim_set(st, "writes", writes);
700 // --------------------------------------------------------------------
702 if(d->do_qops == CONFIG_ONDEMAND_YES || (d->do_qops == CONFIG_ONDEMAND_ONDEMAND && queued_ios)) {
703 d->do_qops = CONFIG_ONDEMAND_YES;
705 st = rrdset_find_bytype("disk_qops", disk);
707 st = rrdset_create("disk_qops", disk, NULL, family, "disk.qops", "Disk Current I/O Operations", "operations", 2002, update_every, RRDSET_TYPE_LINE);
710 rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE);
712 else rrdset_next(st);
714 rrddim_set(st, "operations", queued_ios);
718 // --------------------------------------------------------------------
720 if(d->do_backlog == CONFIG_ONDEMAND_YES || (d->do_backlog == CONFIG_ONDEMAND_ONDEMAND && backlog_ms)) {
721 d->do_backlog = CONFIG_ONDEMAND_YES;
723 st = rrdset_find_bytype("disk_backlog", disk);
725 st = rrdset_create("disk_backlog", disk, NULL, family, "disk.backlog", "Disk Backlog", "backlog (ms)", 2003, update_every, RRDSET_TYPE_AREA);
728 rrddim_add(st, "backlog", NULL, 1, 10, RRDDIM_INCREMENTAL);
730 else rrdset_next(st);
732 rrddim_set(st, "backlog", backlog_ms);
736 // --------------------------------------------------------------------
738 if(d->do_util == CONFIG_ONDEMAND_YES || (d->do_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms)) {
739 d->do_util = CONFIG_ONDEMAND_YES;
741 st = rrdset_find_bytype("disk_util", disk);
743 st = rrdset_create("disk_util", disk, NULL, family, "disk.util", "Disk Utilization Time", "% of time working", 2004, update_every, RRDSET_TYPE_AREA);
746 rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL);
748 else rrdset_next(st);
750 last_busy_ms = rrddim_set(st, "utilization", busy_ms);
754 // --------------------------------------------------------------------
756 if(d->do_mops == CONFIG_ONDEMAND_YES || (d->do_mops == CONFIG_ONDEMAND_ONDEMAND && (mreads || mwrites))) {
757 d->do_mops = CONFIG_ONDEMAND_YES;
759 st = rrdset_find_bytype("disk_mops", disk);
761 st = rrdset_create("disk_mops", disk, NULL, family, "disk.mops", "Disk Merged Operations", "merged operations/s", 2021, update_every, RRDSET_TYPE_LINE);
764 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
765 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
767 else rrdset_next(st);
769 rrddim_set(st, "reads", mreads);
770 rrddim_set(st, "writes", mwrites);
774 // --------------------------------------------------------------------
776 if(d->do_iotime == CONFIG_ONDEMAND_YES || (d->do_iotime == CONFIG_ONDEMAND_ONDEMAND && (readms || writems))) {
777 d->do_iotime = CONFIG_ONDEMAND_YES;
779 st = rrdset_find_bytype("disk_iotime", disk);
781 st = rrdset_create("disk_iotime", disk, NULL, family, "disk.iotime", "Disk Total I/O Time", "milliseconds/s", 2022, update_every, RRDSET_TYPE_LINE);
784 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
785 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
787 else rrdset_next(st);
789 last_readms = rrddim_set(st, "reads", readms);
790 last_writems = rrddim_set(st, "writes", writems);
794 // --------------------------------------------------------------------
795 // calculate differential charts
796 // only if this is not the first time we run
799 if( (d->do_iotime == CONFIG_ONDEMAND_YES || (d->do_iotime == CONFIG_ONDEMAND_ONDEMAND && (readms || writems))) &&
800 (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) {
801 st = rrdset_find_bytype("disk_await", disk);
803 st = rrdset_create("disk_await", disk, NULL, family, "disk.await", "Average Completed I/O Operation Time", "ms per operation", 2005, update_every, RRDSET_TYPE_LINE);
806 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE);
807 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE);
809 else rrdset_next(st);
811 rrddim_set(st, "reads", (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0);
812 rrddim_set(st, "writes", (writes - last_writes) ? (writems - last_writems) / (writes - last_writes) : 0);
816 if( (d->do_io == CONFIG_ONDEMAND_YES || (d->do_io == CONFIG_ONDEMAND_ONDEMAND && (readsectors || writesectors))) &&
817 (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) {
818 st = rrdset_find_bytype("disk_avgsz", disk);
820 st = rrdset_create("disk_avgsz", disk, NULL, family, "disk.avgsz", "Average Completed I/O Operation Bandwidth", "kilobytes per operation", 2006, update_every, RRDSET_TYPE_AREA);
823 rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_ABSOLUTE);
824 rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_ABSOLUTE);
826 else rrdset_next(st);
828 rrddim_set(st, "reads", (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0);
829 rrddim_set(st, "writes", (writes - last_writes) ? (writesectors - last_writesectors) / (writes - last_writes) : 0);
833 if( (d->do_util == CONFIG_ONDEMAND_YES || (d->do_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms)) &&
834 (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) {
835 st = rrdset_find_bytype("disk_svctm", disk);
837 st = rrdset_create("disk_svctm", disk, NULL, family, "disk.svctm", "Average Service Time", "ms per operation", 2007, update_every, RRDSET_TYPE_LINE);
840 rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE);
842 else rrdset_next(st);
844 rrddim_set(st, "svctm", ((reads - last_reads) + (writes - last_writes)) ? (busy_ms - last_busy_ms) / ((reads - last_reads) + (writes - last_writes)) : 0);