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 = time(NULL);
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 strcmp(((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("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("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("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 strcmp(((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 strcmp(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(strcmp(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 strcmp(((RRDDIM *)a)->id, ((RRDDIM *)b)->id);
225 #define rrddim_index_add(st, rd) avl_insert_lock(&((st)->dimensions_index), (avl *)(rd))
226 #define rrddim_index_del(st,rd ) 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(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0)) return RRDSET_TYPE_AREA;
242 else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0)) return RRDSET_TYPE_STACKED;
243 else if(unlikely(strcmp(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(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME)))
293 return RRD_MEMORY_MODE_RAM;
294 else if(unlikely(!strcmp(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(strcmp(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL;
306 if(strcmp(name, RRDDIM_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE;
307 if(strcmp(name, RRDDIM_PCENT_OVER_ROW_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_ROW_TOTAL;
308 if(strcmp(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 debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name);
359 rrdset_index_del_name(&localhost, st);
360 rrdsetvar_rename_all(st);
363 char b[CONFIG_MAX_VALUE + 1];
364 char n[RRD_ID_LENGTH_MAX + 1];
366 snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name);
367 rrdset_strncpyz_name(b, n, CONFIG_MAX_VALUE);
368 st->name = config_get(st->id, "name", b);
369 st->hash_name = simple_hash(st->name);
371 rrdset_index_add_name(&localhost, st);
374 // ----------------------------------------------------------------------------
377 char *rrdset_cache_dir(const char *id)
381 static char *cache_dir = NULL;
383 cache_dir = config_get("global", "cache directory", CACHE_DIR);
384 int r = mkdir(cache_dir, 0755);
385 if(r != 0 && errno != EEXIST)
386 error("Cannot create directory '%s'", cache_dir);
389 char b[FILENAME_MAX + 1];
390 char n[FILENAME_MAX + 1];
391 rrdset_strncpyz_name(b, id, FILENAME_MAX);
393 snprintfz(n, FILENAME_MAX, "%s/%s", cache_dir, b);
394 ret = config_get(id, "cache directory", n);
396 if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
397 int r = mkdir(ret, 0775);
398 if(r != 0 && errno != EEXIST)
399 error("Cannot create directory '%s'", ret);
405 // ----------------------------------------------------------------------------
408 void rrdset_reset(RRDSET *st)
410 debug(D_RRD_CALLS, "rrdset_reset() %s", st->name);
412 st->last_collected_time.tv_sec = 0;
413 st->last_collected_time.tv_usec = 0;
414 st->last_updated.tv_sec = 0;
415 st->last_updated.tv_usec = 0;
416 st->current_entry = 0;
418 st->counter_done = 0;
421 for(rd = st->dimensions; rd ; rd = rd->next) {
422 rd->last_collected_time.tv_sec = 0;
423 rd->last_collected_time.tv_usec = 0;
425 memset(rd->values, 0, rd->entries * sizeof(storage_number));
428 static long align_entries_to_pagesize(long entries) {
429 if(entries < 5) entries = 5;
430 if(entries > RRD_HISTORY_ENTRIES_MAX) entries = RRD_HISTORY_ENTRIES_MAX;
432 #ifdef NETDATA_LOG_ALLOCATIONS
433 long page = (size_t)sysconf(_SC_PAGESIZE);
435 long size = sizeof(RRDDIM) + entries * sizeof(storage_number);
437 size -= (size % page);
440 long n = (size - sizeof(RRDDIM)) / sizeof(storage_number);
450 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)
452 if(!type || !type[0]) {
453 fatal("Cannot create rrd stats without a type.");
458 fatal("Cannot create rrd stats without an id.");
462 char fullid[RRD_ID_LENGTH_MAX + 1];
463 char fullfilename[FILENAME_MAX + 1];
466 snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
468 st = rrdset_find(fullid);
470 error("Cannot create rrd stats for '%s', it already exists.", fullid);
474 long rentries = config_get_number(fullid, "history", rrd_default_history_entries);
475 long entries = align_entries_to_pagesize(rentries);
476 if(entries != rentries) entries = config_set_number(fullid, "history", entries);
478 int enabled = config_get_boolean(fullid, "enabled", 1);
479 if(!enabled) entries = 5;
481 unsigned long size = sizeof(RRDSET);
482 char *cache_dir = rrdset_cache_dir(fullid);
484 debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id);
486 snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir);
487 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);
489 if(strcmp(st->magic, RRDSET_MAGIC) != 0) {
491 info("Initializing file %s.", fullfilename);
494 else if(strcmp(st->id, fullid) != 0) {
496 error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid);
501 else if(st->memsize != size || st->entries != entries) {
503 error("File %s does not have the desired size. Clearing it.", fullfilename);
506 else if(st->update_every != update_every) {
508 error("File %s does not have the desired update frequency. Clearing it.", fullfilename);
511 else if((time(NULL) - st->last_updated.tv_sec) > update_every * entries) {
513 error("File %s is too old. Clearing it.", fullfilename);
525 st->dimensions = NULL;
527 st->mapped = rrd_memory_mode;
528 st->variables = NULL;
532 st = callocz(1, size);
533 st->mapped = RRD_MEMORY_MODE_RAM;
537 st->entries = entries;
538 st->update_every = update_every;
540 if(st->current_entry >= st->entries) st->current_entry = 0;
542 strcpy(st->cache_filename, fullfilename);
543 strcpy(st->magic, RRDSET_MAGIC);
545 strcpy(st->id, fullid);
546 st->hash = simple_hash(st->id);
548 st->cache_dir = cache_dir;
550 st->chart_type = rrdset_type_id(config_get(st->id, "chart type", rrdset_type_name(chart_type)));
551 st->type = config_get(st->id, "type", type);
552 st->family = config_get(st->id, "family", family?family:st->type);
553 st->units = config_get(st->id, "units", units?units:"");
555 st->context = config_get(st->id, "context", context?context:st->id);
556 st->hash_context = simple_hash(st->context);
558 st->priority = config_get_number(st->id, "priority", priority);
559 st->enabled = enabled;
564 // if(!strcmp(st->id, "disk_util.dm-0")) {
566 // error("enabled debugging for '%s'", st->id);
568 // else error("not enabled debugging for '%s'", st->id);
573 st->last_collected_time.tv_sec = 0;
574 st->last_collected_time.tv_usec = 0;
575 st->counter_done = 0;
577 st->gap_when_lost_iterations_above = (int) (
578 config_get_number(st->id, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2);
580 avl_init_lock(&st->dimensions_index, rrddim_compare);
581 avl_init_lock(&st->variables_root_index, rrdvar_compare);
583 pthread_rwlock_init(&st->rwlock, NULL);
584 rrdhost_rwlock(&localhost);
586 if(name && *name) rrdset_set_name(st, name);
587 else rrdset_set_name(st, id);
590 char varvalue[CONFIG_MAX_VALUE + 1];
591 snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name);
592 st->title = config_get(st->id, "title", varvalue);
595 st->rrdfamily = rrdfamily_create(st->family);
596 st->rrdhost = &localhost;
598 st->next = localhost.rrdset_root;
599 localhost.rrdset_root = st;
602 rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, 0);
603 rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, 0);
604 rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, 0);
605 rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, 0);
606 rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, 0);
609 rrdset_index_add(&localhost, st);
611 rrdsetcalc_link_matching(st);
612 rrdcalctemplate_link_matching(st);
614 rrdhost_unlock(&localhost);
619 RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm)
621 char filename[FILENAME_MAX + 1];
622 char fullfilename[FILENAME_MAX + 1];
624 char varname[CONFIG_MAX_NAME + 1];
626 unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number));
628 debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id);
630 rrdset_strncpyz_name(filename, id, FILENAME_MAX);
631 snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename);
632 if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) rd = (RRDDIM *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 1);
635 gettimeofday(&now, NULL);
637 if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) {
639 info("Initializing file %s.", fullfilename);
642 else if(rd->memsize != size) {
644 error("File %s does not have the desired size. Clearing it.", fullfilename);
647 else if(rd->multiplier != multiplier) {
649 error("File %s does not have the same multiplier. Clearing it.", fullfilename);
652 else if(rd->divisor != divisor) {
654 error("File %s does not have the same divisor. Clearing it.", fullfilename);
657 else if(rd->algorithm != algorithm) {
659 error("File %s does not have the same algorithm. Clearing it.", fullfilename);
662 else if(rd->update_every != st->update_every) {
664 error("File %s does not have the same refresh frequency. Clearing it.", fullfilename);
667 else if(usec_dt(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * 1000000ULL)) {
669 error("File %s is too old. Clearing it.", fullfilename);
672 else if(strcmp(rd->id, id) != 0) {
674 error("File %s contents are not for dimension %s. Clearing it.", fullfilename, id);
682 // we have a file mapped for rd
683 rd->mapped = rrd_memory_mode;
684 rd->flags = 0x00000000;
685 rd->variables = NULL;
690 // if we didn't manage to get a mmap'd dimension, just create one
692 rd = callocz(1, size);
693 rd->mapped = RRD_MEMORY_MODE_RAM;
697 strcpy(rd->magic, RRDDIMENSION_MAGIC);
698 strcpy(rd->cache_filename, fullfilename);
699 strncpyz(rd->id, id, RRD_ID_LENGTH_MAX);
700 rd->hash = simple_hash(rd->id);
702 snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
703 rd->name = config_get(st->id, varname, (name && *name)?name:rd->id);
705 snprintfz(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id);
706 rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm)));
708 snprintfz(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id);
709 rd->multiplier = config_get_number(st->id, varname, multiplier);
711 snprintfz(varname, CONFIG_MAX_NAME, "dim %s divisor", rd->id);
712 rd->divisor = config_get_number(st->id, varname, divisor);
713 if(!rd->divisor) rd->divisor = 1;
715 rd->entries = st->entries;
716 rd->update_every = st->update_every;
718 // prevent incremental calculation spikes
721 rd->calculated_value = 0;
722 rd->last_calculated_value = 0;
723 rd->collected_value = 0;
724 rd->last_collected_value = 0;
725 rd->collected_volume = 0;
726 rd->stored_volume = 0;
727 rd->last_stored_value = 0;
728 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
729 rd->last_collected_time.tv_sec = 0;
730 rd->last_collected_time.tv_usec = 0;
733 // append this dimension
734 pthread_rwlock_wrlock(&st->rwlock);
738 RRDDIM *td = st->dimensions;
739 for(; td->next; td = td->next) ;
744 rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, 0);
745 rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, 0);
746 rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, 0);
749 pthread_rwlock_unlock(&st->rwlock);
751 rrddim_index_add(st, rd);
756 void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name)
758 debug(D_RRD_CALLS, "rrddim_set_name() %s.%s", st->name, rd->name);
760 char varname[CONFIG_MAX_NAME + 1];
761 snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
762 config_set_default(st->id, varname, name);
764 rrddimvar_rename_all(rd);
767 void rrddim_free(RRDSET *st, RRDDIM *rd)
769 debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name);
771 if(rd == st->dimensions)
772 st->dimensions = rd->next;
775 for (i = st->dimensions; i && i->next != rd; i = i->next) ;
777 if (i && i->next == rd)
780 error("Request to free dimension '%s.%s' but it is not linked.", st->id, rd->name);
785 rrddimvar_free(rd->variables);
787 rrddim_index_del(st, rd);
789 // free(rd->annotations);
790 if(rd->mapped == RRD_MEMORY_MODE_SAVE) {
791 debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
792 savememory(rd->cache_filename, rd, rd->memsize);
794 debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
795 munmap(rd, rd->memsize);
797 else if(rd->mapped == RRD_MEMORY_MODE_MAP) {
798 debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
799 munmap(rd, rd->memsize);
802 debug(D_RRD_CALLS, "Removing dimension '%s'.", rd->name);
807 void rrdset_free_all(void)
809 info("Freeing all memory...");
811 rrdhost_rwlock(&localhost);
814 for(st = localhost.rrdset_root; st ;) {
815 RRDSET *next = st->next;
817 pthread_rwlock_wrlock(&st->rwlock);
820 rrdsetvar_free(st->variables);
823 rrdsetcalc_unlink(st->alarms);
825 while(st->dimensions)
826 rrddim_free(st, st->dimensions);
828 rrdset_index_del(&localhost, st);
830 st->rrdfamily->use_count--;
831 if(!st->rrdfamily->use_count)
832 rrdfamily_free(st->rrdfamily);
834 pthread_rwlock_unlock(&st->rwlock);
836 if(st->mapped == RRD_MEMORY_MODE_SAVE) {
837 debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
838 savememory(st->cache_filename, st, st->memsize);
840 debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
841 munmap(st, st->memsize);
843 else if(st->mapped == RRD_MEMORY_MODE_MAP) {
844 debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
845 munmap(st, st->memsize);
852 localhost.rrdset_root = NULL;
854 rrdhost_unlock(&localhost);
856 info("Memory cleanup completed...");
859 void rrdset_save_all(void) {
860 info("Saving database...");
865 rrdhost_rwlock(&localhost);
866 for(st = localhost.rrdset_root; st ; st = st->next) {
867 pthread_rwlock_wrlock(&st->rwlock);
869 if(st->mapped == RRD_MEMORY_MODE_SAVE) {
870 debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
871 savememory(st->cache_filename, st, st->memsize);
874 for(rd = st->dimensions; rd ; rd = rd->next) {
875 if(likely(rd->mapped == RRD_MEMORY_MODE_SAVE)) {
876 debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
877 savememory(rd->cache_filename, rd, rd->memsize);
881 pthread_rwlock_unlock(&st->rwlock);
883 rrdhost_unlock(&localhost);
887 RRDSET *rrdset_find(const char *id)
889 debug(D_RRD_CALLS, "rrdset_find() for chart %s", id);
891 RRDSET *st = rrdset_index_find(&localhost, id, 0);
895 RRDSET *rrdset_find_bytype(const char *type, const char *id)
897 debug(D_RRD_CALLS, "rrdset_find_bytype() for chart %s.%s", type, id);
899 char buf[RRD_ID_LENGTH_MAX + 1];
901 strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1);
903 int len = (int) strlen(buf);
904 strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len));
906 return(rrdset_find(buf));
909 RRDSET *rrdset_find_byname(const char *name)
911 debug(D_RRD_CALLS, "rrdset_find_byname() for chart %s", name);
913 RRDSET *st = rrdset_index_find_name(&localhost, name, 0);
917 RRDDIM *rrddim_find(RRDSET *st, const char *id)
919 debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id);
921 return rrddim_index_find(st, id, 0);
924 int rrddim_hide(RRDSET *st, const char *id)
926 debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id);
928 RRDDIM *rd = rrddim_find(st, id);
930 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
934 rd->flags |= RRDDIM_FLAG_HIDDEN;
938 int rrddim_unhide(RRDSET *st, const char *id)
940 debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id);
942 RRDDIM *rd = rrddim_find(st, id);
944 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
948 if(rd->flags & RRDDIM_FLAG_HIDDEN) rd->flags ^= RRDDIM_FLAG_HIDDEN;
952 collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value)
954 debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value);
956 gettimeofday(&rd->last_collected_time, NULL);
957 rd->collected_value = value;
961 // 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));
963 return rd->last_collected_value;
966 collected_number rrddim_set(RRDSET *st, const char *id, collected_number value)
968 RRDDIM *rd = rrddim_find(st, id);
970 error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
974 return rrddim_set_by_pointer(st, rd, value);
977 void rrdset_next_usec(RRDSET *st, unsigned long long microseconds)
979 if(!microseconds) rrdset_next(st);
981 debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds);
983 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds);
984 st->usec_since_last_update = microseconds;
988 void rrdset_next(RRDSET *st)
990 unsigned long long microseconds = 0;
992 if(likely(st->last_collected_time.tv_sec)) {
994 gettimeofday(&now, NULL);
995 microseconds = usec_dt(&now, &st->last_collected_time);
997 // prevent infinite loop
998 else microseconds = st->update_every * 1000000ULL;
1000 rrdset_next_usec(st, microseconds);
1003 void rrdset_next_plugins(RRDSET *st)
1008 unsigned long long rrdset_done(RRDSET *st)
1010 if(unlikely(netdata_exit)) return 0;
1012 debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name);
1017 pthreadoldcancelstate; // store the old cancelable pthread state, to restore it at the end
1020 store_this_entry = 1, // boolean: 1 = store this entry, 0 = don't store this entry
1021 first_entry = 0; // boolean: 1 = this is the first entry seen for this chart, 0 = all other entries
1024 stored_entries = 0; // the number of entries we have stored in the db, during this call to rrdset_done()
1027 last_collect_ut, // the timestamp in microseconds, of the last collected value
1028 now_collect_ut, // the timestamp in microseconds, of this collected value (this is NOW)
1029 last_stored_ut, // the timestamp in microseconds, of the last stored entry in the db
1030 next_store_ut, // the timestamp in microseconds, of the next entry to store in the db
1031 update_every_ut = st->update_every * 1000000ULL; // st->update_every in microseconds
1033 if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &pthreadoldcancelstate) != 0))
1034 error("Cannot set pthread cancel state to DISABLE.");
1036 // a read lock is OK here
1037 pthread_rwlock_rdlock(&st->rwlock);
1040 // enable the chart, if it was disabled
1041 if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled)
1045 // check if the chart has a long time to be updated
1046 if(unlikely(st->usec_since_last_update > st->entries * update_every_ut)) {
1047 info("%s: took too long to be updated (%0.3Lf secs). Reseting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0));
1049 st->usec_since_last_update = update_every_ut;
1052 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update);
1054 // set last_collected_time
1055 if(unlikely(!st->last_collected_time.tv_sec)) {
1056 // it is the first entry
1057 // set the last_collected_time to now
1058 gettimeofday(&st->last_collected_time, NULL);
1059 last_collect_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - update_every_ut;
1061 // the first entry should not be stored
1062 store_this_entry = 0;
1065 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);
1068 // it is not the first entry
1069 // calculate the proper last_collected_time, using usec_since_last_update
1070 last_collect_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec;
1071 unsigned long long ut = last_collect_ut + st->usec_since_last_update;
1072 st->last_collected_time.tv_sec = (time_t) (ut / 1000000ULL);
1073 st->last_collected_time.tv_usec = (suseconds_t) (ut % 1000000ULL);
1076 // if this set has not been updated in the past
1077 // we fake the last_update time to be = now - usec_since_last_update
1078 if(unlikely(!st->last_updated.tv_sec)) {
1079 // it has never been updated before
1080 // set a fake last_updated, in the past using usec_since_last_update
1081 unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update;
1082 st->last_updated.tv_sec = (time_t) (ut / 1000000ULL);
1083 st->last_updated.tv_usec = (suseconds_t) (ut % 1000000ULL);
1085 // the first entry should not be stored
1086 store_this_entry = 0;
1089 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);
1092 // check if we will re-write the entire data set
1093 if(unlikely(usec_dt(&st->last_collected_time, &st->last_updated) > st->entries * update_every_ut)) {
1094 info("%s: too old data (last updated at %ld.%ld, last collected at %ld.%ld). Reseting 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);
1097 st->usec_since_last_update = update_every_ut;
1099 gettimeofday(&st->last_collected_time, NULL);
1101 unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update;
1102 st->last_updated.tv_sec = (time_t) (ut / 1000000ULL);
1103 st->last_updated.tv_usec = (suseconds_t) (ut % 1000000ULL);
1105 // the first entry should not be stored
1106 store_this_entry = 0;
1110 // these are the 3 variables that will help us in interpolation
1111 // last_stored_ut = the last time we added a value to the storage
1112 // now_collect_ut = the time the current value has been collected
1113 // next_store_ut = the time of the next interpolation point
1114 last_stored_ut = st->last_updated.tv_sec * 1000000ULL + st->last_updated.tv_usec;
1115 now_collect_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec;
1116 next_store_ut = (st->last_updated.tv_sec + st->update_every) * 1000000ULL;
1118 if(unlikely(st->debug)) {
1119 debug(D_RRD_STATS, "%s: last_collect_ut = %0.3Lf (last collection time)", st->name, (long double)last_collect_ut/1000000.0);
1120 debug(D_RRD_STATS, "%s: now_collect_ut = %0.3Lf (current collection time)", st->name, (long double)now_collect_ut/1000000.0);
1121 debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
1122 debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
1125 if(unlikely(!st->counter_done)) {
1126 store_this_entry = 0;
1127 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name);
1131 // calculate totals and count the dimensions
1133 st->collected_total = 0;
1134 for( rd = st->dimensions, dimensions = 0 ; rd ; rd = rd->next, dimensions++ )
1135 if(likely(rd->updated)) st->collected_total += rd->collected_value;
1137 uint32_t storage_flags = SN_EXISTS;
1139 // process all dimensions to calculate their values
1140 // based on the collected figures only
1141 // at this stage we do not interpolate anything
1142 for( rd = st->dimensions ; rd ; rd = rd->next ) {
1144 if(unlikely(!rd->updated)) {
1145 rd->calculated_value = 0;
1149 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: START "
1150 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1151 " collected_value = " COLLECTED_NUMBER_FORMAT
1152 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1153 " calculated_value = " CALCULATED_NUMBER_FORMAT
1155 , rd->last_collected_value
1156 , rd->collected_value
1157 , rd->last_calculated_value
1158 , rd->calculated_value
1161 switch(rd->algorithm) {
1162 case RRDDIM_ABSOLUTE:
1163 rd->calculated_value = (calculated_number)rd->collected_value
1164 * (calculated_number)rd->multiplier
1165 / (calculated_number)rd->divisor;
1167 if(unlikely(st->debug))
1168 debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN "
1169 CALCULATED_NUMBER_FORMAT " = "
1170 COLLECTED_NUMBER_FORMAT
1171 " * " CALCULATED_NUMBER_FORMAT
1172 " / " CALCULATED_NUMBER_FORMAT
1174 , rd->calculated_value
1175 , rd->collected_value
1176 , (calculated_number)rd->multiplier
1177 , (calculated_number)rd->divisor
1181 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1182 if(unlikely(!st->collected_total))
1183 rd->calculated_value = 0;
1185 // the percentage of the current value
1186 // over the total of all dimensions
1187 rd->calculated_value =
1188 (calculated_number)100
1189 * (calculated_number)rd->collected_value
1190 / (calculated_number)st->collected_total;
1192 if(unlikely(st->debug))
1193 debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW "
1194 CALCULATED_NUMBER_FORMAT " = 100"
1195 " * " COLLECTED_NUMBER_FORMAT
1196 " / " COLLECTED_NUMBER_FORMAT
1198 , rd->calculated_value
1199 , rd->collected_value
1200 , st->collected_total
1204 case RRDDIM_INCREMENTAL:
1205 if(unlikely(rd->counter <= 1)) {
1206 rd->calculated_value = 0;
1210 // if the new is smaller than the old (an overflow, or reset), set the old equal to the new
1211 // to reset the calculation (it will give zero as the calculation for this second)
1212 if(unlikely(rd->last_collected_value > rd->collected_value)) {
1213 debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
1214 , st->name, rd->name
1215 , rd->last_collected_value
1216 , rd->collected_value);
1217 if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
1218 rd->last_collected_value = rd->collected_value;
1221 rd->calculated_value +=
1222 (calculated_number)(rd->collected_value - rd->last_collected_value)
1223 * (calculated_number)rd->multiplier
1224 / (calculated_number)rd->divisor;
1226 if(unlikely(st->debug))
1227 debug(D_RRD_STATS, "%s/%s: CALC INC PRE "
1228 CALCULATED_NUMBER_FORMAT " = ("
1229 COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT
1231 " * " CALCULATED_NUMBER_FORMAT
1232 " / " CALCULATED_NUMBER_FORMAT
1234 , rd->calculated_value
1235 , rd->collected_value, rd->last_collected_value
1236 , (calculated_number)rd->multiplier
1237 , (calculated_number)rd->divisor
1241 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1242 if(unlikely(rd->counter <= 1)) {
1243 rd->calculated_value = 0;
1247 // if the new is smaller than the old (an overflow, or reset), set the old equal to the new
1248 // to reset the calculation (it will give zero as the calculation for this second)
1249 if(unlikely(rd->last_collected_value > rd->collected_value)) {
1250 debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
1251 , st->name, rd->name
1252 , rd->last_collected_value
1253 , rd->collected_value);
1254 if(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
1255 rd->last_collected_value = rd->collected_value;
1258 // the percentage of the current increment
1259 // over the increment of all dimensions together
1260 if(unlikely(st->collected_total == st->last_collected_total))
1261 rd->calculated_value = 0;
1263 rd->calculated_value =
1264 (calculated_number)100
1265 * (calculated_number)(rd->collected_value - rd->last_collected_value)
1266 / (calculated_number)(st->collected_total - st->last_collected_total);
1268 if(unlikely(st->debug))
1269 debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF "
1270 CALCULATED_NUMBER_FORMAT " = 100"
1271 " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
1272 " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
1274 , rd->calculated_value
1275 , rd->collected_value, rd->last_collected_value
1276 , st->collected_total, st->last_collected_total
1281 // make the default zero, to make sure
1282 // it gets noticed when we add new types
1283 rd->calculated_value = 0;
1285 if(unlikely(st->debug))
1286 debug(D_RRD_STATS, "%s/%s: CALC "
1287 CALCULATED_NUMBER_FORMAT " = 0"
1289 , rd->calculated_value
1294 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: PHASE2 "
1295 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1296 " collected_value = " COLLECTED_NUMBER_FORMAT
1297 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1298 " calculated_value = " CALCULATED_NUMBER_FORMAT
1300 , rd->last_collected_value
1301 , rd->collected_value
1302 , rd->last_calculated_value
1303 , rd->calculated_value
1308 // at this point we have all the calculated values ready
1309 // it is now time to interpolate values on a second boundary
1311 if(unlikely(now_collect_ut < next_store_ut)) {
1312 // this is collected in the same interpolation point
1313 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name);
1316 unsigned long long first_ut = last_stored_ut;
1317 long long iterations = (now_collect_ut - last_stored_ut) / (update_every_ut);
1318 if((now_collect_ut % (update_every_ut)) == 0) iterations++;
1320 for( ; next_store_ut <= now_collect_ut ; last_collect_ut = next_store_ut, next_store_ut += update_every_ut, iterations-- ) {
1321 #ifdef NETDATA_INTERNAL_CHECKS
1322 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); }
1325 if(unlikely(st->debug)) {
1326 debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
1327 debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
1330 st->last_updated.tv_sec = (time_t) (next_store_ut / 1000000ULL);
1331 st->last_updated.tv_usec = 0;
1333 for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) {
1334 calculated_number new_value;
1336 switch(rd->algorithm) {
1337 case RRDDIM_INCREMENTAL:
1338 new_value = (calculated_number)
1339 ( rd->calculated_value
1340 * (calculated_number)(next_store_ut - last_collect_ut)
1341 / (calculated_number)(now_collect_ut - last_collect_ut)
1344 if(unlikely(st->debug))
1345 debug(D_RRD_STATS, "%s/%s: CALC2 INC "
1346 CALCULATED_NUMBER_FORMAT " = "
1347 CALCULATED_NUMBER_FORMAT
1352 , rd->calculated_value
1353 , (next_store_ut - last_stored_ut)
1354 , (now_collect_ut - last_stored_ut)
1357 rd->calculated_value -= new_value;
1358 new_value += rd->last_calculated_value;
1359 rd->last_calculated_value = 0;
1360 new_value /= (calculated_number)st->update_every;
1362 if(unlikely(next_store_ut - last_stored_ut < update_every_ut)) {
1363 if(unlikely(st->debug))
1364 debug(D_RRD_STATS, "%s/%s: COLLECTION POINT IS SHORT " CALCULATED_NUMBER_FORMAT " - EXTRAPOLATING",
1366 , (calculated_number)(next_store_ut - last_stored_ut)
1368 new_value = new_value * (calculated_number)(st->update_every * 1000000) / (calculated_number)(next_store_ut - last_stored_ut);
1372 case RRDDIM_ABSOLUTE:
1373 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1374 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1376 if(iterations == 1) {
1377 // this is the last iteration
1378 // do not interpolate
1379 // just show the calculated value
1381 new_value = rd->calculated_value;
1384 // we have missed an update
1385 // interpolate in the middle values
1387 new_value = (calculated_number)
1388 ( ( (rd->calculated_value - rd->last_calculated_value)
1389 * (calculated_number)(next_store_ut - last_collect_ut)
1390 / (calculated_number)(now_collect_ut - last_collect_ut)
1392 + rd->last_calculated_value
1395 if(unlikely(st->debug))
1396 debug(D_RRD_STATS, "%s/%s: CALC2 DEF "
1397 CALCULATED_NUMBER_FORMAT " = ((("
1398 "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")"
1400 " / %llu) + " CALCULATED_NUMBER_FORMAT
1403 , rd->calculated_value, rd->last_calculated_value
1404 , (next_store_ut - first_ut)
1405 , (now_collect_ut - first_ut), rd->last_calculated_value
1411 if(unlikely(!store_this_entry)) {
1412 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
1416 if(likely(rd->updated && rd->counter > 1 && iterations < st->gap_when_lost_iterations_above)) {
1417 rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags );
1418 rd->last_stored_value = new_value;
1420 if(unlikely(st->debug))
1421 debug(D_RRD_STATS, "%s/%s: STORE[%ld] "
1422 CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT
1425 , unpack_storage_number(rd->values[st->current_entry]), new_value
1429 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING "
1433 rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
1434 rd->last_stored_value = NAN;
1439 if(unlikely(st->debug)) {
1440 calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor;
1441 calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]);
1442 calculated_number accuracy = accuracy_loss(t1, t2);
1443 debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)"
1447 , get_storage_number_flags(rd->values[st->current_entry])
1450 , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
1453 rd->collected_volume += t1;
1454 rd->stored_volume += t2;
1455 accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume);
1456 debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s"
1460 , rd->collected_volume
1462 , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
1467 // reset the storage flags for the next point, if any;
1468 storage_flags = SN_EXISTS;
1471 st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1;
1472 last_stored_ut = next_store_ut;
1475 st->last_collected_total = st->collected_total;
1477 for( rd = st->dimensions; rd ; rd = rd->next ) {
1478 if(unlikely(!rd->updated)) continue;
1480 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);
1481 rd->last_collected_value = rd->collected_value;
1483 switch(rd->algorithm) {
1484 case RRDDIM_INCREMENTAL:
1485 if(unlikely(!first_entry)) {
1486 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);
1487 rd->last_calculated_value += rd->calculated_value;
1490 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS THE FIRST POINT", st->name);
1494 case RRDDIM_ABSOLUTE:
1495 case RRDDIM_PCENT_OVER_ROW_TOTAL:
1496 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
1497 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);
1498 rd->last_calculated_value = rd->calculated_value;
1502 rd->calculated_value = 0;
1503 rd->collected_value = 0;
1506 if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: END "
1507 " last_collected_value = " COLLECTED_NUMBER_FORMAT
1508 " collected_value = " COLLECTED_NUMBER_FORMAT
1509 " last_calculated_value = " CALCULATED_NUMBER_FORMAT
1510 " calculated_value = " CALCULATED_NUMBER_FORMAT
1512 , rd->last_collected_value
1513 , rd->collected_value
1514 , rd->last_calculated_value
1515 , rd->calculated_value
1519 // ALL DONE ABOUT THE DATA UPDATE
1520 // --------------------------------------------------------------------
1523 // find if there are any obsolete dimensions (not updated recently)
1524 if(unlikely(rrd_delete_unupdated_dimensions)) {
1526 for( rd = st->dimensions; likely(rd) ; rd = rd->next )
1527 if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)
1532 // there is dimension to free
1533 // upgrade our read lock to a write lock
1534 pthread_rwlock_unlock(&st->rwlock);
1535 pthread_rwlock_wrlock(&st->rwlock);
1537 for( rd = st->dimensions, last = NULL ; likely(rd) ; ) {
1538 // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds
1540 if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) {
1541 info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id);
1543 if(unlikely(!last)) {
1544 st->dimensions = rd->next;
1546 rrddim_free(st, rd);
1547 rd = st->dimensions;
1551 last->next = rd->next;
1553 rrddim_free(st, rd);
1563 if(unlikely(!st->dimensions)) {
1564 info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id);
1571 pthread_rwlock_unlock(&st->rwlock);
1573 if(unlikely(pthread_setcancelstate(pthreadoldcancelstate, NULL) != 0))
1574 error("Cannot set pthread cancel state to RESTORE (%d).", pthreadoldcancelstate);
1576 return(st->usec_since_last_update);