3 #define RRD_DEFAULT_GAP_INTERPOLATIONS 1
5 // ----------------------------------------------------------------------------
9 // if not zero it gives the time (in seconds) to remove un-updated dimensions
11 // if dimensions are removed, the chart generation will have to run again
12 int rrd_delete_unupdated_dimensions = 0;
15 int rrd_update_every = UPDATE_EVERY;
16 int rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
17 int rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
19 static int rrdset_compare(void* a, void* b);
20 static int rrdset_compare_name(void* a, void* b);
21 static int rrdfamily_compare(void *a, void *b);
23 // ----------------------------------------------------------------------------
27 .hostname = "localhost",
29 .rrdset_root_rwlock = PTHREAD_RWLOCK_INITIALIZER,
30 .rrdset_root_index = {
31 { NULL, rrdset_compare },
34 .rrdset_root_index_name = {
35 { NULL, rrdset_compare_name },
38 .rrdfamily_root_index = {
39 { NULL, rrdfamily_compare },
42 .variables_root_index = {
43 { NULL, rrdvar_compare },
52 .alarm_log_rwlock = PTHREAD_RWLOCK_INITIALIZER
56 void rrdhost_init(char *hostname) {
57 localhost.hostname = hostname;
58 localhost.health_log.next_log_id =
59 localhost.health_log.next_alarm_id = now_realtime_sec();
62 void rrdhost_rwlock(RRDHOST *host) {
63 pthread_rwlock_wrlock(&host->rrdset_root_rwlock);
66 void rrdhost_rdlock(RRDHOST *host) {
67 pthread_rwlock_rdlock(&host->rrdset_root_rwlock);
70 void rrdhost_unlock(RRDHOST *host) {
71 pthread_rwlock_unlock(&host->rrdset_root_rwlock);
74 void rrdhost_check_rdlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
75 int ret = pthread_rwlock_trywrlock(&host->rrdset_root_rwlock);
78 fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
81 void rrdhost_check_wrlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
82 int ret = pthread_rwlock_tryrdlock(&host->rrdset_root_rwlock);
85 fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
88 // ----------------------------------------------------------------------------
91 static int rrdfamily_compare(void *a, void *b) {
92 if(((RRDFAMILY *)a)->hash_family < ((RRDFAMILY *)b)->hash_family) return -1;
93 else if(((RRDFAMILY *)a)->hash_family > ((RRDFAMILY *)b)->hash_family) return 1;
94 else return strsame(((RRDFAMILY *)a)->family, ((RRDFAMILY *)b)->family);
97 #define rrdfamily_index_add(host, rc) (RRDFAMILY *)avl_insert_lock(&((host)->rrdfamily_root_index), (avl *)(rc))
98 #define rrdfamily_index_del(host, rc) (RRDFAMILY *)avl_remove_lock(&((host)->rrdfamily_root_index), (avl *)(rc))
100 static RRDFAMILY *rrdfamily_index_find(RRDHOST *host, const char *id, uint32_t hash) {
103 tmp.hash_family = (hash)?hash:simple_hash(tmp.family);
105 return (RRDFAMILY *)avl_search_lock(&(host->rrdfamily_root_index), (avl *) &tmp);
108 RRDFAMILY *rrdfamily_create(const char *id) {
109 RRDFAMILY *rc = rrdfamily_index_find(&localhost, id, 0);
111 rc = callocz(1, sizeof(RRDFAMILY));
113 rc->family = strdupz(id);
114 rc->hash_family = simple_hash(rc->family);
116 // initialize the variables index
117 avl_init_lock(&rc->variables_root_index, rrdvar_compare);
119 RRDFAMILY *ret = rrdfamily_index_add(&localhost, rc);
121 fatal("RRDFAMILY: INTERNAL ERROR: Expected to INSERT RRDFAMILY '%s' into index, but inserted '%s'.", rc->family, (ret)?ret->family:"NONE");
128 void rrdfamily_free(RRDFAMILY *rc) {
131 RRDFAMILY *ret = rrdfamily_index_del(&localhost, rc);
133 fatal("RRDFAMILY: INTERNAL ERROR: Expected to DELETE RRDFAMILY '%s' from index, but deleted '%s'.", rc->family, (ret)?ret->family:"NONE");
135 if(rc->variables_root_index.avl_tree.root != NULL)
136 fatal("RRDFAMILY: INTERNAL ERROR: Variables index of RRDFAMILY '%s' that is freed, is not empty.", rc->family);
138 freez((void *)rc->family);
143 // ----------------------------------------------------------------------------
146 static int rrdset_compare(void* a, void* b) {
147 if(((RRDSET *)a)->hash < ((RRDSET *)b)->hash) return -1;
148 else if(((RRDSET *)a)->hash > ((RRDSET *)b)->hash) return 1;
149 else return strsame(((RRDSET *)a)->id, ((RRDSET *)b)->id);
152 #define rrdset_index_add(host, st) (RRDSET *)avl_insert_lock(&((host)->rrdset_root_index), (avl *)(st))
153 #define rrdset_index_del(host, st) (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index), (avl *)(st))
155 static RRDSET *rrdset_index_find(RRDHOST *host, const char *id, uint32_t hash) {
157 strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX);
158 tmp.hash = (hash)?hash:simple_hash(tmp.id);
160 return (RRDSET *)avl_search_lock(&(host->rrdset_root_index), (avl *) &tmp);
163 // ----------------------------------------------------------------------------
166 #define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname)))
168 static int rrdset_compare_name(void* a, void* b) {
169 RRDSET *A = rrdset_from_avlname(a);
170 RRDSET *B = rrdset_from_avlname(b);
172 // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name);
174 if(A->hash_name < B->hash_name) return -1;
175 else if(A->hash_name > B->hash_name) return 1;
176 else return strsame(A->name, B->name);
179 RRDSET *rrdset_index_add_name(RRDHOST *host, RRDSET *st) {
181 // fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name);
182 result = avl_insert_lock(&host->rrdset_root_index_name, (avl *) (&st->avlname));
183 if(result) return rrdset_from_avlname(result);
187 RRDSET *rrdset_index_del_name(RRDHOST *host, RRDSET *st) {
189 // fprintf(stderr, "DELETING: %s (name: %s)\n", st->id, st->name);
190 result = (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index_name), (avl *)(&st->avlname));
191 if(result) return rrdset_from_avlname(result);
195 static RRDSET *rrdset_index_find_name(RRDHOST *host, const char *name, uint32_t hash) {
199 tmp.hash_name = (hash)?hash:simple_hash(tmp.name);
201 // fprintf(stderr, "SEARCHING: %s\n", name);
202 result = avl_search_lock(&host->rrdset_root_index_name, (avl *) (&(tmp.avlname)));
204 RRDSET *st = rrdset_from_avlname(result);
205 if(strsame(st->magic, RRDSET_MAGIC))
206 error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name);
208 // fprintf(stderr, "FOUND: %s\n", name);
209 return rrdset_from_avlname(result);
211 // fprintf(stderr, "NOT FOUND: %s\n", name);
216 // ----------------------------------------------------------------------------
219 static int rrddim_compare(void* a, void* b) {
220 if(((RRDDIM *)a)->hash < ((RRDDIM *)b)->hash) return -1;
221 else if(((RRDDIM *)a)->hash > ((RRDDIM *)b)->hash) return 1;
222 else return strsame(((RRDDIM *)a)->id, ((RRDDIM *)b)->id);
225 #define rrddim_index_add(st, rd) (RRDDIM *)avl_insert_lock(&((st)->dimensions_index), (avl *)(rd))
226 #define rrddim_index_del(st,rd ) (RRDDIM *)avl_remove_lock(&((st)->dimensions_index), (avl *)(rd))
228 static RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) {
230 strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX);
231 tmp.hash = (hash)?hash:simple_hash(tmp.id);
233 return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp);
236 // ----------------------------------------------------------------------------
239 int rrdset_type_id(const char *name)
241 if(unlikely(strsame(name, RRDSET_TYPE_AREA_NAME) == 0)) return RRDSET_TYPE_AREA;
242 else if(unlikely(strsame(name, RRDSET_TYPE_STACKED_NAME) == 0)) return RRDSET_TYPE_STACKED;
243 else if(unlikely(strsame(name, RRDSET_TYPE_LINE_NAME) == 0)) return RRDSET_TYPE_LINE;
244 return RRDSET_TYPE_LINE;
247 const char *rrdset_type_name(int chart_type)
249 static char line[] = RRDSET_TYPE_LINE_NAME;
250 static char area[] = RRDSET_TYPE_AREA_NAME;
251 static char stacked[] = RRDSET_TYPE_STACKED_NAME;
254 case RRDSET_TYPE_LINE:
257 case RRDSET_TYPE_AREA:
260 case RRDSET_TYPE_STACKED:
266 // ----------------------------------------------------------------------------
269 const char *rrd_memory_mode_name(int id)
271 static const char ram[] = RRD_MEMORY_MODE_RAM_NAME;
272 static const char map[] = RRD_MEMORY_MODE_MAP_NAME;
273 static const char save[] = RRD_MEMORY_MODE_SAVE_NAME;
276 case RRD_MEMORY_MODE_RAM:
279 case RRD_MEMORY_MODE_MAP:
282 case RRD_MEMORY_MODE_SAVE:
290 int rrd_memory_mode_id(const char *name)
292 if(unlikely(!strsame(name, RRD_MEMORY_MODE_RAM_NAME)))
293 return RRD_MEMORY_MODE_RAM;
294 else if(unlikely(!strsame(name, RRD_MEMORY_MODE_MAP_NAME)))
295 return RRD_MEMORY_MODE_MAP;
297 return RRD_MEMORY_MODE_SAVE;
300 // ----------------------------------------------------------------------------
303 int rrddim_algorithm_id(const char *name)
305 if(strsame(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL;
306 if(strsame(name, RRDDIM_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE;
307 if(strsame(name, RRDDIM_PCENT_OVER_ROW_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_ROW_TOTAL;
308 if(strsame(name, RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_DIFF_TOTAL;
309 return RRDDIM_ABSOLUTE;
312 const char *rrddim_algorithm_name(int chart_type)
314 static char absolute[] = RRDDIM_ABSOLUTE_NAME;
315 static char incremental[] = RRDDIM_INCREMENTAL_NAME;
316 static char percentage_of_absolute_row[] = RRDDIM_PCENT_OVER_ROW_TOTAL_NAME;
317 static char percentage_of_incremental_row[] = RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME;
320 case RRDDIM_ABSOLUTE:
323 case RRDDIM_INCREMENTAL:
326 case RRDDIM_PCENT_OVER_ROW_TOTAL:
327 return percentage_of_absolute_row;
329 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
330 return percentage_of_incremental_row;
335 // ----------------------------------------------------------------------------
338 char *rrdset_strncpyz_name(char *to, const char *from, size_t length)
342 while (length-- && (c = *from++)) {
343 if(c != '.' && !isalnum(c))
354 void rrdset_set_name(RRDSET *st, const char *name)
356 if(unlikely(st->name && !strsame(st->name, name)))
359 debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name);
361 char b[CONFIG_MAX_VALUE + 1];
362 char n[RRD_ID_LENGTH_MAX + 1];
364 snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name);
365 rrdset_strncpyz_name(b, n, CONFIG_MAX_VALUE);
368 rrdset_index_del_name(&localhost, st);
369 st->name = config_set_default(st->id, "name", b);
370 st->hash_name = simple_hash(st->name);
371 rrdsetvar_rename_all(st);
374 st->name = config_get(st->id, "name", b);
375 st->hash_name = simple_hash(st->name);
378 pthread_rwlock_wrlock(&st->rwlock);
380 for(rd = st->dimensions; rd ;rd = rd->next)
381 rrddimvar_rename_all(rd);
382 pthread_rwlock_unlock(&st->rwlock);
384 if(unlikely(rrdset_index_add_name(&localhost, st) != st))
385 error("RRDSET: INTERNAL ERROR: attempted to index duplicate chart name '%s'", st->name);
388 // ----------------------------------------------------------------------------
391 char *rrdset_cache_dir(const char *id)
395 static char *cache_dir = NULL;
397 cache_dir = config_get("global", "cache directory", CACHE_DIR);
398 int r = mkdir(cache_dir, 0755);
399 if(r != 0 && errno != EEXIST)
400 error("Cannot create directory '%s'", cache_dir);
403 char b[FILENAME_MAX + 1];
404 char n[FILENAME_MAX + 1];
405 rrdset_strncpyz_name(b, id, FILENAME_MAX);
407 snprintfz(n, FILENAME_MAX, "%s/%s", cache_dir, b);
408 ret = config_get(id, "cache directory", n);
410 if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
411 int r = mkdir(ret, 0775);
412 if(r != 0 && errno != EEXIST)
413 error("Cannot create directory '%s'", ret);
419 // ----------------------------------------------------------------------------
422 void rrdset_reset(RRDSET *st)
424 debug(D_RRD_CALLS, "rrdset_reset() %s", st->name);
426 st->last_collected_time.tv_sec = 0;
427 st->last_collected_time.tv_usec = 0;
428 st->last_updated.tv_sec = 0;
429 st->last_updated.tv_usec = 0;
430 st->current_entry = 0;
432 st->counter_done = 0;
435 for(rd = st->dimensions; rd ; rd = rd->next) {
436 rd->last_collected_time.tv_sec = 0;
437 rd->last_collected_time.tv_usec = 0;
439 memset(rd->values, 0, rd->entries * sizeof(storage_number));
442 static inline long align_entries_to_pagesize(long entries) {
443 if(entries < 5) entries = 5;
444 if(entries > RRD_HISTORY_ENTRIES_MAX) entries = RRD_HISTORY_ENTRIES_MAX;
446 #ifdef NETDATA_LOG_ALLOCATIONS
447 long page = (size_t)sysconf(_SC_PAGESIZE);
449 long size = sizeof(RRDDIM) + entries * sizeof(storage_number);
451 size -= (size % page);
454 long n = (size - sizeof(RRDDIM)) / sizeof(storage_number);
464 static inline void timeval_align(struct timeval *tv, int update_every) {
465 tv->tv_sec -= tv->tv_sec % update_every;
466 tv->tv_usec = 500000;
469 RRDSET *rrdset_create(const char *type, const char *id, const char *name, const char *family, const char *context, const char *title, const char *units, long priority, int update_every, int chart_type)
471 if(!type || !type[0]) {
472 fatal("Cannot create rrd stats without a type.");
477 fatal("Cannot create rrd stats without an id.");
481 char fullid[RRD_ID_LENGTH_MAX + 1];
482 char fullfilename[FILENAME_MAX + 1];
484 snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
486 RRDSET *st = rrdset_find(fullid);
488 error("Cannot create rrd stats for '%s', it already exists.", fullid);
492 long rentries = config_get_number(fullid, "history", rrd_default_history_entries);
493 long entries = align_entries_to_pagesize(rentries);
494 if(entries != rentries) entries = config_set_number(fullid, "history", entries);
496 int enabled = config_get_boolean(fullid, "enabled", 1);
497 if(!enabled) entries = 5;
499 unsigned long size = sizeof(RRDSET);
500 char *cache_dir = rrdset_cache_dir(fullid);
502 debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id);
504 snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir);
505 if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) st = (RRDSET *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 0);
507 if(strsame(st->magic, RRDSET_MAGIC) != 0) {
509 info("Initializing file %s.", fullfilename);
512 else if(strsame(st->id, fullid) != 0) {
514 error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid);
519 else if(st->memsize != size || st->entries != entries) {
521 error("File %s does not have the desired size. Clearing it.", fullfilename);
524 else if(st->update_every != update_every) {
526 error("File %s does not have the desired update frequency. Clearing it.", fullfilename);
529 else if((now_realtime_sec() - st->last_updated.tv_sec) > update_every * entries) {
531 error("File %s is too old. Clearing it.", fullfilename);
535 // make sure the database is aligned
536 if(st->last_updated.tv_sec)
537 timeval_align(&st->last_updated, update_every);
547 st->dimensions = NULL;
549 st->mapped = rrd_memory_mode;
550 st->variables = NULL;
552 memset(&st->rwlock, 0, sizeof(pthread_rwlock_t));
553 memset(&st->avl, 0, sizeof(avl));
554 memset(&st->avlname, 0, sizeof(avl));
555 memset(&st->variables_root_index, 0, sizeof(avl_tree_lock));
556 memset(&st->dimensions_index, 0, sizeof(avl_tree_lock));
559 st = callocz(1, size);
560 st->mapped = RRD_MEMORY_MODE_RAM;
564 st->entries = entries;
565 st->update_every = update_every;
567 if(st->current_entry >= st->entries) st->current_entry = 0;
569 strcpy(st->cache_filename, fullfilename);
570 strcpy(st->magic, RRDSET_MAGIC);
572 strcpy(st->id, fullid);
573 st->hash = simple_hash(st->id);
575 st->cache_dir = cache_dir;
577 st->chart_type = rrdset_type_id(config_get(st->id, "chart type", rrdset_type_name(chart_type)));
578 st->type = config_get(st->id, "type", type);
579 st->family = config_get(st->id, "family", family?family:st->type);
580 st->units = config_get(st->id, "units", units?units:"");
582 st->context = config_get(st->id, "context", context?context:st->id);
583 st->hash_context = simple_hash(st->context);
585 st->priority = config_get_number(st->id, "priority", priority);
586 st->enabled = enabled;
591 // if(!strsame(st->id, "disk_util.dm-0")) {
593 // error("enabled debugging for '%s'", st->id);
595 // else error("not enabled debugging for '%s'", st->id);
600 st->last_collected_time.tv_sec = 0;
601 st->last_collected_time.tv_usec = 0;
602 st->counter_done = 0;
604 st->gap_when_lost_iterations_above = (int) (
605 config_get_number(st->id, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2);
607 avl_init_lock(&st->dimensions_index, rrddim_compare);
608 avl_init_lock(&st->variables_root_index, rrdvar_compare);
610 pthread_rwlock_init(&st->rwlock, NULL);
611 rrdhost_rwlock(&localhost);
613 if(name && *name) rrdset_set_name(st, name);
614 else rrdset_set_name(st, id);
617 char varvalue[CONFIG_MAX_VALUE + 1];
618 char varvalue2[CONFIG_MAX_VALUE + 1];
619 snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name);
620 json_escape_string(varvalue2, varvalue, sizeof(varvalue2));
621 st->title = config_get(st->id, "title", varvalue2);
624 st->rrdfamily = rrdfamily_create(st->family);
625 st->rrdhost = &localhost;
627 st->next = localhost.rrdset_root;
628 localhost.rrdset_root = st;
631 rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, 0);
632 rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, 0);
633 rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, 0);
634 rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, 0);
635 rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, 0);
638 if(unlikely(rrdset_index_add(&localhost, st) != st))
639 error("RRDSET: INTERNAL ERROR: attempt to index duplicate chart '%s'", st->id);
641 rrdsetcalc_link_matching(st);
642 rrdcalctemplate_link_matching(st);
644 rrdhost_unlock(&localhost);
649 RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm)
651 RRDDIM *rd = rrddim_find(st, id);
653 error("Cannot create rrd dimension '%s/%s', it already exists.", st->id, name);
657 char filename[FILENAME_MAX + 1];
658 char fullfilename[FILENAME_MAX + 1];
660 char varname[CONFIG_MAX_NAME + 1];
661 unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number));
663 debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id);
665 rrdset_strncpyz_name(filename, id, FILENAME_MAX);
666 snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename);
668 if(rrd_memory_mode != RRD_MEMORY_MODE_RAM)
669 rd = (RRDDIM *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 1);
673 now_realtime_timeval(&now);
675 if(strsame(rd->magic, RRDDIMENSION_MAGIC) != 0) {
677 info("Initializing file %s.", fullfilename);
680 else if(rd->memsize != size) {
682 error("File %s does not have the desired size. Clearing it.", fullfilename);
685 else if(rd->multiplier != multiplier) {
687 error("File %s does not have the same multiplier. Clearing it.", fullfilename);
690 else if(rd->divisor != divisor) {
692 error("File %s does not have the same divisor. Clearing it.", fullfilename);
695 else if(rd->algorithm != algorithm) {
697 error("File %s does not have the same algorithm. Clearing it.", fullfilename);
700 else if(rd->update_every != st->update_every) {
702 error("File %s does not have the same refresh frequency. Clearing it.", fullfilename);
705 else if(dt_usec(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * USEC_PER_SEC)) {
707 error("File %s is too old. Clearing it.", fullfilename);
710 else if(strsame(rd->id, id) != 0) {
712 error("File %s contents are not for dimension %s. Clearing it.", fullfilename, id);
720 // we have a file mapped for rd
721 rd->mapped = rrd_memory_mode;
722 rd->flags = 0x00000000;
723 rd->variables = NULL;
726 memset(&rd->avl, 0, sizeof(avl));
729 // if we didn't manage to get a mmap'd dimension, just create one
731 rd = callocz(1, size);
732 rd->mapped = RRD_MEMORY_MODE_RAM;
736 strcpy(rd->magic, RRDDIMENSION_MAGIC);
737 strcpy(rd->cache_filename, fullfilename);
738 strncpyz(rd->id, id, RRD_ID_LENGTH_MAX);
739 rd->hash = simple_hash(rd->id);
741 snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
742 rd->name = config_get(st->id, varname, (name && *name)?name:rd->id);
744 snprintfz(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id);
745 rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm)));
747 snprintfz(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id);
748 rd->multiplier = config_get_number(st->id, varname, multiplier);
750 snprintfz(varname, CONFIG_MAX_NAME, "dim %s divisor", rd->id);
751 rd->divisor = config_get_number(st->id, varname, divisor);
752 if(!rd->divisor) rd->divisor = 1;
754 rd->entries = st->entries;
755 rd->update_every = st->update_every;
757 // prevent incremental calculation spikes
760 rd->calculated_value = 0;
761 rd->last_calculated_value = 0;
762 rd->collected_value = 0;
763 rd->last_collected_value = 0;
764 rd->collected_volume = 0;
765 rd->stored_volume = 0;
766 rd->last_stored_value = 0;
767 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
768 rd->last_collected_time.tv_sec = 0;
769 rd->last_collected_time.tv_usec = 0;
772 // append this dimension
773 pthread_rwlock_wrlock(&st->rwlock);
777 RRDDIM *td = st->dimensions;
778 for(; td->next; td = td->next) ;
783 rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, 0);
784 rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, 0);
785 rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, 0);
788 pthread_rwlock_unlock(&st->rwlock);
790 if(unlikely(rrddim_index_add(st, rd) != rd))
791 error("RRDDIM: INTERNAL ERROR: attempt to index duplicate dimension '%s' on chart '%s'", rd->id, st->id);
796 void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name)
798 if(unlikely(rd->name && !strsame(rd->name, name)))
801 debug(D_RRD_CALLS, "rrddim_set_name() from %s.%s to %s.%s", st->name, rd->name, st->name, name);
803 char varname[CONFIG_MAX_NAME + 1];
804 snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
805 rd->name = config_set_default(st->id, varname, name);
807 rrddimvar_rename_all(rd);
810 void rrddim_free(RRDSET *st, RRDDIM *rd)
812 debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name);
814 if(rd == st->dimensions)
815 st->dimensions = rd->next;
818 for (i = st->dimensions; i && i->next != rd; i = i->next) ;
820 if (i && i->next == rd)
823 error("Request to free dimension '%s.%s' but it is not linked.", st->id, rd->name);
828 rrddimvar_free(rd->variables);
830 if(unlikely(rrddim_index_del(st, rd) != rd))
831 error("RRDDIM: INTERNAL ERROR: attempt to remove from index dimension '%s' on chart '%s', removed a different dimension.", rd->id, st->id);
833 // free(rd->annotations);
834 if(rd->mapped == RRD_MEMORY_MODE_SAVE) {
835 debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
836 savememory(rd->cache_filename, rd, rd->memsize);
838 debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
839 munmap(rd, rd->memsize);
841 else if(rd->mapped == RRD_MEMORY_MODE_MAP) {
842 debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
843 munmap(rd, rd->memsize);
846 debug(D_RRD_CALLS, "Removing dimension '%s'.", rd->name);
851 void rrdset_free_all(void)
853 info("Freeing all memory...");
855 rrdhost_rwlock(&localhost);
858 for(st = localhost.rrdset_root; st ;) {
859 RRDSET *next = st->next;
861 pthread_rwlock_wrlock(&st->rwlock);
864 rrdsetvar_free(st->variables);
867 rrdsetcalc_unlink(st->alarms);
869 while(st->dimensions)
870 rrddim_free(st, st->dimensions);
872 if(unlikely(rrdset_index_del(&localhost, st) != st))
873 error("RRDSET: INTERNAL ERROR: attempt to remove from index chart '%s', removed a different chart.", st->id);
875 rrdset_index_del_name(&localhost, st);
877 st->rrdfamily->use_count--;
878 if(!st->rrdfamily->use_count)
879 rrdfamily_free(st->rrdfamily);
881 pthread_rwlock_unlock(&st->rwlock);
883 if(st->mapped == RRD_MEMORY_MODE_SAVE || st->mapped == RRD_MEMORY_MODE_MAP) {
884 debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
885 munmap(st, st->memsize);
892 localhost.rrdset_root = NULL;
894 rrdhost_unlock(&localhost);
896 info("Memory cleanup completed...");
899 void rrdset_save_all(void) {
900 info("Saving database...");
905 // we get an write lock
906 // to ensure only one thread is saving the database
907 rrdhost_rwlock(&localhost);
909 for(st = localhost.rrdset_root; st ; st = st->next) {
910 pthread_rwlock_rdlock(&st->rwlock);
912 if(st->mapped == RRD_MEMORY_MODE_SAVE) {
913 debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
914 savememory(st->cache_filename, st, st->memsize);
917 for(rd = st->dimensions; rd ; rd = rd->next) {
918 if(likely(rd->mapped == RRD_MEMORY_MODE_SAVE)) {
919 debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
920 savememory(rd->cache_filename, rd, rd->memsize);
924 pthread_rwlock_unlock(&st->rwlock);
927 rrdhost_unlock(&localhost);
931 RRDSET *rrdset_find(const char *id)
933 debug(D_RRD_CALLS, "rrdset_find() for chart %s", id);
935 RRDSET *st = rrdset_index_find(&localhost, id, 0);
939 RRDSET *rrdset_find_bytype(const char *type, const char *id)
941 debug(D_RRD_CALLS, "rrdset_find_bytype() for chart %s.%s", type, id);
943 char buf[RRD_ID_LENGTH_MAX + 1];
945 strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1);
947 int len = (int) strlen(buf);
948 strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len));
950 return(rrdset_find(buf));
953 RRDSET *rrdset_find_byname(const char *name)
955 debug(D_RRD_CALLS, "rrdset_find_byname() for chart %s", name);
957 RRDSET *st = rrdset_index_find_name(&localhost, name, 0);
961 RRDDIM *rrddim_find(RRDSET *st, const char *id)
963 debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id);
965 return rrddim_index_find(st, id, 0);
968 int rrddim_hide(RRDSET *st, const char *id)
970 debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id);
972 RRDDIM *rd = rrddim_find(st, id);
974 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
978 rd->flags |= RRDDIM_FLAG_HIDDEN;
982 int rrddim_unhide(RRDSET *st, const char *id)
984 debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id);
986 RRDDIM *rd = rrddim_find(st, id);
988 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
992 if(rd->flags & RRDDIM_FLAG_HIDDEN) rd->flags ^= RRDDIM_FLAG_HIDDEN;
996 collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value)
998 debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value);
1000 now_realtime_timeval(&rd->last_collected_time);
1001 rd->collected_value = value;
1005 // fprintf(stderr, "%s.%s %llu " COLLECTED_NUMBER_FORMAT " dt %0.6f" " rate " CALCULATED_NUMBER_FORMAT "\n", st->name, rd->name, st->usec_since_last_update, value, (float)((double)st->usec_since_last_update / (double)1000000), (calculated_number)((value - rd->last_collected_value) * (calculated_number)rd->multiplier / (calculated_number)rd->divisor * 1000000.0 / (calculated_number)st->usec_since_last_update));
1007 return rd->last_collected_value;
1010 collected_number rrddim_set(RRDSET *st, const char *id, collected_number value)
1012 RRDDIM *rd = rrddim_find(st, id);
1014 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
1018 return rrddim_set_by_pointer(st, rd, value);
1021 void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds)
1023 if(unlikely(!st->last_collected_time.tv_sec || !microseconds)) {
1025 microseconds = st->update_every * USEC_PER_SEC;
1027 st->usec_since_last_update = microseconds;
1030 void rrdset_next_usec(RRDSET *st, usec_t microseconds)
1033 now_realtime_timeval(&now);
1035 if(unlikely(!st->last_collected_time.tv_sec)) {
1037 microseconds = st->update_every * USEC_PER_SEC;
1039 else if(unlikely(!microseconds)) {
1040 // no dt given by the plugin
1041 microseconds = dt_usec(&now, &st->last_collected_time);
1044 // microseconds has the time since the last collection
1045 usec_t now_usec = timeval_usec(&now);
1046 usec_t last_usec = timeval_usec(&st->last_collected_time);
1047 usec_t since_last_usec = dt_usec(&now, &st->last_collected_time);
1049 // verify the microseconds given is good
1050 if(unlikely(microseconds > since_last_usec)) {
1051 debug(D_RRD_CALLS, "dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - since_last_usec, st->name, st->id);
1053 #ifdef NETDATA_INTERNAL_CHECKS
1054 if(unlikely(last_usec + microseconds > now_usec + 1000))
1055 error("dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - since_last_usec, st->name, st->id);
1058 microseconds = since_last_usec;
1060 else if(unlikely(microseconds < since_last_usec * 0.8)) {
1061 debug(D_RRD_CALLS, "dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, since_last_usec, st->name, st->id);
1063 #ifdef NETDATA_INTERNAL_CHECKS
1064 error("dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, since_last_usec, st->name, st->id);
1066 microseconds = since_last_usec;
1069 debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds);
1071 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds);
1072 st->usec_since_last_update = microseconds;
1075 usec_t rrdset_done(RRDSET *st)
1077 if(unlikely(netdata_exit)) return 0;
1079 debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name);
1084 pthreadoldcancelstate; // store the old cancelable pthread state, to restore it at the end
1087 store_this_entry = 1, // boolean: 1 = store this entry, 0 = don't store this entry
1088 first_entry = 0; // boolean: 1 = this is the first entry seen for this chart, 0 = all other entries
1091 stored_entries = 0; // the number of entries we have stored in the db, during this call to rrdset_done()
1094 last_collect_ut, // the timestamp in microseconds, of the last collected value
1095 now_collect_ut, // the timestamp in microseconds, of this collected value (this is NOW)
1096 last_stored_ut, // the timestamp in microseconds, of the last stored entry in the db
1097 next_store_ut, // the timestamp in microseconds, of the next entry to store in the db
1098 update_every_ut = st->update_every * USEC_PER_SEC; // st->update_every in microseconds
1100 if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &pthreadoldcancelstate) != 0))
1101 error("Cannot set pthread cancel state to DISABLE.");
1103 // a read lock is OK here
1104 pthread_rwlock_rdlock(&st->rwlock);
1107 // enable the chart, if it was disabled
1108 if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled)
1112 // check if the chart has a long time to be updated
1113 if(unlikely(st->usec_since_last_update > st->entries * update_every_ut)) {
1114 info("%s: took too long to be updated (%0.3Lf secs). Resetting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0));
1116 st->usec_since_last_update = update_every_ut;
1119 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update);
1121 // set last_collected_time
1122 if(unlikely(!st->last_collected_time.tv_sec)) {
1123 // it is the first entry
1124 // set the last_collected_time to now
1125 now_realtime_timeval(&st->last_collected_time);
1126 timeval_align(&st->last_collected_time, st->update_every);
1128 last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - update_every_ut;
1130 // the first entry should not be stored
1131 store_this_entry = 0;
1134 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: has not set last_collected_time. Setting it now. Will not store the next entry.", st->name);
1137 // it is not the first entry
1138 // calculate the proper last_collected_time, using usec_since_last_update
1139 last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
1140 usec_t ut = last_collect_ut + st->usec_since_last_update;
1141 st->last_collected_time.tv_sec = (time_t) (ut / USEC_PER_SEC);
1142 st->last_collected_time.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
1145 // if this set has not been updated in the past
1146 // we fake the last_update time to be = now - usec_since_last_update
1147 if(unlikely(!st->last_updated.tv_sec)) {
1148 // it has never been updated before
1149 // set a fake last_updated, in the past using usec_since_last_update
1150 usec_t ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - st->usec_since_last_update;
1151 st->last_updated.tv_sec = (time_t) (ut / USEC_PER_SEC);
1152 st->last_updated.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
1154 // the first entry should not be stored
1155 store_this_entry = 0;
1158 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: initializing last_updated to now - %llu microseconds (%0.3Lf). Will not store the next entry.", st->name, st->usec_since_last_update, (long double)ut/1000000.0);
1161 // check if we will re-write the entire data set
1162 if(unlikely(dt_usec(&st->last_collected_time, &st->last_updated) > st->entries * update_every_ut)) {
1163 info("%s: too old data (last updated at %ld.%ld, last collected at %ld.%ld). Resetting it. Will not store the next entry.", st->name, st->last_updated.tv_sec, st->last_updated.tv_usec, st->last_collected_time.tv_sec, st->last_collected_time.tv_usec);
1166 st->usec_since_last_update = update_every_ut;
1168 now_realtime_timeval(&st->last_collected_time);
1169 timeval_align(&st->last_collected_time, st->update_every);
1171 usec_t ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - st->usec_since_last_update;
1172 st->last_updated.tv_sec = (time_t) (ut / USEC_PER_SEC);
1173 st->last_updated.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
1175 // the first entry should not be stored
1176 store_this_entry = 0;
1180 // these are the 3 variables that will help us in interpolation
1181 // last_stored_ut = the last time we added a value to the storage
1182 // now_collect_ut = the time the current value has been collected
1183 // next_store_ut = the time of the next interpolation point
1184 last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
1185 now_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
1186 next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
1188 if(unlikely(st->debug)) {
1189 debug(D_RRD_STATS, "%s: last_collect_ut = %0.3Lf (last collection time)", st->name, (long double)last_collect_ut/1000000.0);
1190 debug(D_RRD_STATS, "%s: now_collect_ut = %0.3Lf (current collection time)", st->name, (long double)now_collect_ut/1000000.0);
1191 debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
1192 debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
1195 if(unlikely(!st->counter_done)) {
1196 store_this_entry = 0;
1197 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name);
1201 // calculate totals and count the dimensions
1203 st->collected_total = 0;
1204 for( rd = st->dimensions, dimensions = 0 ; rd ; rd = rd->next, dimensions++ )
1205 if(likely(rd->updated)) st->collected_total += rd->collected_value;
1207 uint32_t storage_flags = SN_EXISTS;
1209 // process all dimensions to calculate their values
1210 // based on the collected figures only
1211 // at this stage we do not interpolate anything
1212 for( rd = st->dimensions ; rd ; rd = rd->next ) {
1214 if(unlikely(!rd->updated)) {
1215 rd->calculated_value = 0;
1219 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: START "
1220 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1221 " collected_value = " COLLECTED_NUMBER_FORMAT
1222 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1223 " calculated_value = " CALCULATED_NUMBER_FORMAT
1225 , rd->last_collected_value
1226 , rd->collected_value
1227 , rd->last_calculated_value
1228 , rd->calculated_value
1231 switch(rd->algorithm) {
1232 case RRDDIM_ABSOLUTE:
1233 rd->calculated_value = (calculated_number)rd->collected_value
1234 * (calculated_number)rd->multiplier
1235 / (calculated_number)rd->divisor;
1237 if(unlikely(st->debug))
1238 debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN "
1239 CALCULATED_NUMBER_FORMAT " = "
1240 COLLECTED_NUMBER_FORMAT
1241 " * " CALCULATED_NUMBER_FORMAT
1242 " / " CALCULATED_NUMBER_FORMAT
1244 , rd->calculated_value
1245 , rd->collected_value
1246 , (calculated_number)rd->multiplier
1247 , (calculated_number)rd->divisor
1251 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1252 if(unlikely(!st->collected_total))
1253 rd->calculated_value = 0;
1255 // the percentage of the current value
1256 // over the total of all dimensions
1257 rd->calculated_value =
1258 (calculated_number)100
1259 * (calculated_number)rd->collected_value
1260 / (calculated_number)st->collected_total;
1262 if(unlikely(st->debug))
1263 debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW "
1264 CALCULATED_NUMBER_FORMAT " = 100"
1265 " * " COLLECTED_NUMBER_FORMAT
1266 " / " COLLECTED_NUMBER_FORMAT
1268 , rd->calculated_value
1269 , rd->collected_value
1270 , st->collected_total
1274 case RRDDIM_INCREMENTAL:
1275 if(unlikely(rd->counter <= 1)) {
1276 rd->calculated_value = 0;
1280 // if the new is smaller than the old (an overflow, or reset), set the old equal to the new
1281 // to reset the calculation (it will give zero as the calculation for this second)
1282 if(unlikely(rd->last_collected_value > rd->collected_value)) {
1283 debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
1284 , st->name, rd->name
1285 , rd->last_collected_value
1286 , rd->collected_value);
1287 if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
1288 rd->last_collected_value = rd->collected_value;
1291 rd->calculated_value +=
1292 (calculated_number)(rd->collected_value - rd->last_collected_value)
1293 * (calculated_number)rd->multiplier
1294 / (calculated_number)rd->divisor;
1296 if(unlikely(st->debug))
1297 debug(D_RRD_STATS, "%s/%s: CALC INC PRE "
1298 CALCULATED_NUMBER_FORMAT " = ("
1299 COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT
1301 " * " CALCULATED_NUMBER_FORMAT
1302 " / " CALCULATED_NUMBER_FORMAT
1304 , rd->calculated_value
1305 , rd->collected_value, rd->last_collected_value
1306 , (calculated_number)rd->multiplier
1307 , (calculated_number)rd->divisor
1311 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1312 if(unlikely(rd->counter <= 1)) {
1313 rd->calculated_value = 0;
1317 // if the new is smaller than the old (an overflow, or reset), set the old equal to the new
1318 // to reset the calculation (it will give zero as the calculation for this second)
1319 if(unlikely(rd->last_collected_value > rd->collected_value)) {
1320 debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
1321 , st->name, rd->name
1322 , rd->last_collected_value
1323 , rd->collected_value);
1324 if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
1325 rd->last_collected_value = rd->collected_value;
1328 // the percentage of the current increment
1329 // over the increment of all dimensions together
1330 if(unlikely(st->collected_total == st->last_collected_total))
1331 rd->calculated_value = 0;
1333 rd->calculated_value =
1334 (calculated_number)100
1335 * (calculated_number)(rd->collected_value - rd->last_collected_value)
1336 / (calculated_number)(st->collected_total - st->last_collected_total);
1338 if(unlikely(st->debug))
1339 debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF "
1340 CALCULATED_NUMBER_FORMAT " = 100"
1341 " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
1342 " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
1344 , rd->calculated_value
1345 , rd->collected_value, rd->last_collected_value
1346 , st->collected_total, st->last_collected_total
1351 // make the default zero, to make sure
1352 // it gets noticed when we add new types
1353 rd->calculated_value = 0;
1355 if(unlikely(st->debug))
1356 debug(D_RRD_STATS, "%s/%s: CALC "
1357 CALCULATED_NUMBER_FORMAT " = 0"
1359 , rd->calculated_value
1364 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: PHASE2 "
1365 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1366 " collected_value = " COLLECTED_NUMBER_FORMAT
1367 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1368 " calculated_value = " CALCULATED_NUMBER_FORMAT
1370 , rd->last_collected_value
1371 , rd->collected_value
1372 , rd->last_calculated_value
1373 , rd->calculated_value
1378 // at this point we have all the calculated values ready
1379 // it is now time to interpolate values on a second boundary
1381 if(unlikely(now_collect_ut < next_store_ut)) {
1382 // this is collected in the same interpolation point
1383 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name);
1384 #ifdef NETDATA_INTERNAL_CHECKS
1385 info("%s is collected in the same interpolation point: short by %llu microseconds", st->name, next_store_ut - now_collect_ut);
1389 usec_t first_ut = last_stored_ut;
1390 long long iterations = (now_collect_ut - last_stored_ut) / (update_every_ut);
1391 if((now_collect_ut % (update_every_ut)) == 0) iterations++;
1393 for( ; next_store_ut <= now_collect_ut ; last_collect_ut = next_store_ut, next_store_ut += update_every_ut, iterations-- ) {
1394 #ifdef NETDATA_INTERNAL_CHECKS
1395 if(iterations < 0) { error("%s: iterations calculation wrapped! first_ut = %llu, last_stored_ut = %llu, next_store_ut = %llu, now_collect_ut = %llu", st->name, first_ut, last_stored_ut, next_store_ut, now_collect_ut); }
1398 if(unlikely(st->debug)) {
1399 debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
1400 debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
1403 st->last_updated.tv_sec = (time_t) (next_store_ut / USEC_PER_SEC);
1404 st->last_updated.tv_usec = 0;
1406 for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) {
1407 calculated_number new_value;
1409 switch(rd->algorithm) {
1410 case RRDDIM_INCREMENTAL:
1411 new_value = (calculated_number)
1412 ( rd->calculated_value
1413 * (calculated_number)(next_store_ut - last_collect_ut)
1414 / (calculated_number)(now_collect_ut - last_collect_ut)
1417 if(unlikely(st->debug))
1418 debug(D_RRD_STATS, "%s/%s: CALC2 INC "
1419 CALCULATED_NUMBER_FORMAT " = "
1420 CALCULATED_NUMBER_FORMAT
1425 , rd->calculated_value
1426 , (next_store_ut - last_stored_ut)
1427 , (now_collect_ut - last_stored_ut)
1430 rd->calculated_value -= new_value;
1431 new_value += rd->last_calculated_value;
1432 rd->last_calculated_value = 0;
1433 new_value /= (calculated_number)st->update_every;
1435 if(unlikely(next_store_ut - last_stored_ut < update_every_ut)) {
1436 if(unlikely(st->debug))
1437 debug(D_RRD_STATS, "%s/%s: COLLECTION POINT IS SHORT " CALCULATED_NUMBER_FORMAT " - EXTRAPOLATING",
1439 , (calculated_number)(next_store_ut - last_stored_ut)
1441 new_value = new_value * (calculated_number)(st->update_every * 1000000) / (calculated_number)(next_store_ut - last_stored_ut);
1445 case RRDDIM_ABSOLUTE:
1446 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1447 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1449 if(iterations == 1) {
1450 // this is the last iteration
1451 // do not interpolate
1452 // just show the calculated value
1454 new_value = rd->calculated_value;
1457 // we have missed an update
1458 // interpolate in the middle values
1460 new_value = (calculated_number)
1461 ( ( (rd->calculated_value - rd->last_calculated_value)
1462 * (calculated_number)(next_store_ut - last_collect_ut)
1463 / (calculated_number)(now_collect_ut - last_collect_ut)
1465 + rd->last_calculated_value
1468 if(unlikely(st->debug))
1469 debug(D_RRD_STATS, "%s/%s: CALC2 DEF "
1470 CALCULATED_NUMBER_FORMAT " = ((("
1471 "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")"
1473 " / %llu) + " CALCULATED_NUMBER_FORMAT
1476 , rd->calculated_value, rd->last_calculated_value
1477 , (next_store_ut - first_ut)
1478 , (now_collect_ut - first_ut), rd->last_calculated_value
1484 if(unlikely(!store_this_entry)) {
1485 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
1489 if(likely(rd->updated && rd->counter > 1 && iterations < st->gap_when_lost_iterations_above)) {
1490 rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags );
1491 rd->last_stored_value = new_value;
1493 if(unlikely(st->debug))
1494 debug(D_RRD_STATS, "%s/%s: STORE[%ld] "
1495 CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT
1498 , unpack_storage_number(rd->values[st->current_entry]), new_value
1502 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING "
1506 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
1507 rd->last_stored_value = NAN;
1512 if(unlikely(st->debug)) {
1513 calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor;
1514 calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]);
1515 calculated_number accuracy = accuracy_loss(t1, t2);
1516 debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)"
1520 , get_storage_number_flags(rd->values[st->current_entry])
1523 , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
1526 rd->collected_volume += t1;
1527 rd->stored_volume += t2;
1528 accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume);
1529 debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s"
1533 , rd->collected_volume
1535 , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
1540 // reset the storage flags for the next point, if any;
1541 storage_flags = SN_EXISTS;
1544 st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1;
1545 last_stored_ut = next_store_ut;
1548 st->last_collected_total = st->collected_total;
1550 for( rd = st->dimensions; rd ; rd = rd->next ) {
1551 if(unlikely(!rd->updated)) continue;
1553 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_collected_value, rd->collected_value);
1554 rd->last_collected_value = rd->collected_value;
1556 switch(rd->algorithm) {
1557 case RRDDIM_INCREMENTAL:
1558 if(unlikely(!first_entry)) {
1559 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value + rd->calculated_value, rd->calculated_value);
1560 rd->last_calculated_value += rd->calculated_value;
1563 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS THE FIRST POINT", st->name);
1567 case RRDDIM_ABSOLUTE:
1568 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1569 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1570 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value, rd->calculated_value);
1571 rd->last_calculated_value = rd->calculated_value;
1575 rd->calculated_value = 0;
1576 rd->collected_value = 0;
1579 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: END "
1580 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1581 " collected_value = " COLLECTED_NUMBER_FORMAT
1582 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1583 " calculated_value = " CALCULATED_NUMBER_FORMAT
1585 , rd->last_collected_value
1586 , rd->collected_value
1587 , rd->last_calculated_value
1588 , rd->calculated_value
1592 // ALL DONE ABOUT THE DATA UPDATE
1593 // --------------------------------------------------------------------
1596 // find if there are any obsolete dimensions (not updated recently)
1597 if(unlikely(rrd_delete_unupdated_dimensions)) {
1599 for( rd = st->dimensions; likely(rd) ; rd = rd->next )
1600 if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)
1605 // there is dimension to free
1606 // upgrade our read lock to a write lock
1607 pthread_rwlock_unlock(&st->rwlock);
1608 pthread_rwlock_wrlock(&st->rwlock);
1610 for( rd = st->dimensions, last = NULL ; likely(rd) ; ) {
1611 // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds
1613 if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) {
1614 info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id);
1616 if(unlikely(!last)) {
1617 st->dimensions = rd->next;
1619 rrddim_free(st, rd);
1620 rd = st->dimensions;
1624 last->next = rd->next;
1626 rrddim_free(st, rd);
1636 if(unlikely(!st->dimensions)) {
1637 info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id);
1644 pthread_rwlock_unlock(&st->rwlock);
1646 if(unlikely(pthread_setcancelstate(pthreadoldcancelstate, NULL) != 0))
1647 error("Cannot set pthread cancel state to RESTORE (%d).", pthreadoldcancelstate);
1649 return(st->usec_since_last_update);