diff options
Diffstat (limited to 'web/api/queries/percentile/percentile.c')
| -rw-r--r-- | web/api/queries/percentile/percentile.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/web/api/queries/percentile/percentile.c b/web/api/queries/percentile/percentile.c index 88f8600d..da3b3269 100644 --- a/web/api/queries/percentile/percentile.c +++ b/web/api/queries/percentile/percentile.c @@ -4,166 +4,3 @@ // ---------------------------------------------------------------------------- // median - -struct grouping_percentile { - size_t series_size; - size_t next_pos; - NETDATA_DOUBLE percent; - - NETDATA_DOUBLE *series; -}; - -static void grouping_create_percentile_internal(RRDR *r, const char *options, NETDATA_DOUBLE def) { - long entries = r->group; - if(entries < 10) entries = 10; - - struct grouping_percentile *g = (struct grouping_percentile *)onewayalloc_callocz(r->internal.owa, 1, sizeof(struct grouping_percentile)); - g->series = onewayalloc_mallocz(r->internal.owa, entries * sizeof(NETDATA_DOUBLE)); - g->series_size = (size_t)entries; - - g->percent = def; - if(options && *options) { - g->percent = str2ndd(options, NULL); - if(!netdata_double_isnumber(g->percent)) g->percent = 0.0; - if(g->percent < 0.0) g->percent = 0.0; - if(g->percent > 100.0) g->percent = 100.0; - } - - g->percent = g->percent / 100.0; - r->internal.grouping_data = g; -} - -void grouping_create_percentile25(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 25.0); -} -void grouping_create_percentile50(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 50.0); -} -void grouping_create_percentile75(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 75.0); -} -void grouping_create_percentile80(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 80.0); -} -void grouping_create_percentile90(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 90.0); -} -void grouping_create_percentile95(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 95.0); -} -void grouping_create_percentile97(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 97.0); -} -void grouping_create_percentile98(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 98.0); -} -void grouping_create_percentile99(RRDR *r, const char *options) { - grouping_create_percentile_internal(r, options, 99.0); -} - -// resets when switches dimensions -// so, clear everything to restart -void grouping_reset_percentile(RRDR *r) { - struct grouping_percentile *g = (struct grouping_percentile *)r->internal.grouping_data; - g->next_pos = 0; -} - -void grouping_free_percentile(RRDR *r) { - struct grouping_percentile *g = (struct grouping_percentile *)r->internal.grouping_data; - if(g) onewayalloc_freez(r->internal.owa, g->series); - - onewayalloc_freez(r->internal.owa, r->internal.grouping_data); - r->internal.grouping_data = NULL; -} - -void grouping_add_percentile(RRDR *r, NETDATA_DOUBLE value) { - struct grouping_percentile *g = (struct grouping_percentile *)r->internal.grouping_data; - - if(unlikely(g->next_pos >= g->series_size)) { - g->series = onewayalloc_doublesize( r->internal.owa, g->series, g->series_size * sizeof(NETDATA_DOUBLE)); - g->series_size *= 2; - } - - g->series[g->next_pos++] = value; -} - -NETDATA_DOUBLE grouping_flush_percentile(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { - struct grouping_percentile *g = (struct grouping_percentile *)r->internal.grouping_data; - - NETDATA_DOUBLE value; - size_t available_slots = g->next_pos; - - if(unlikely(!available_slots)) { - value = 0.0; - *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; - } - else if(available_slots == 1) { - value = g->series[0]; - } - else { - sort_series(g->series, available_slots); - - NETDATA_DOUBLE min = g->series[0]; - NETDATA_DOUBLE max = g->series[available_slots - 1]; - - if (min != max) { - size_t slots_to_use = (size_t)((NETDATA_DOUBLE)available_slots * g->percent); - if(!slots_to_use) slots_to_use = 1; - - NETDATA_DOUBLE percent_to_use = (NETDATA_DOUBLE)slots_to_use / (NETDATA_DOUBLE)available_slots; - NETDATA_DOUBLE percent_delta = g->percent - percent_to_use; - - NETDATA_DOUBLE percent_interpolation_slot = 0.0; - NETDATA_DOUBLE percent_last_slot = 0.0; - if(percent_delta > 0.0) { - NETDATA_DOUBLE percent_to_use_plus_1_slot = (NETDATA_DOUBLE)(slots_to_use + 1) / (NETDATA_DOUBLE)available_slots; - NETDATA_DOUBLE percent_1slot = percent_to_use_plus_1_slot - percent_to_use; - - percent_interpolation_slot = percent_delta / percent_1slot; - percent_last_slot = 1 - percent_interpolation_slot; - } - - int start_slot, stop_slot, step, last_slot, interpolation_slot; - if(min >= 0.0 && max >= 0.0) { - start_slot = 0; - stop_slot = start_slot + (int)slots_to_use; - last_slot = stop_slot - 1; - interpolation_slot = stop_slot; - step = 1; - } - else { - start_slot = (int)available_slots - 1; - stop_slot = start_slot - (int)slots_to_use; - last_slot = stop_slot + 1; - interpolation_slot = stop_slot; - step = -1; - } - - value = 0.0; - for(int slot = start_slot; slot != stop_slot ; slot += step) - value += g->series[slot]; - - size_t counted = slots_to_use; - if(percent_interpolation_slot > 0.0 && interpolation_slot >= 0 && interpolation_slot < (int)available_slots) { - value += g->series[interpolation_slot] * percent_interpolation_slot; - value += g->series[last_slot] * percent_last_slot; - counted++; - } - - value = value / (NETDATA_DOUBLE)counted; - } - else - value = min; - } - - if(unlikely(!netdata_double_isnumber(value))) { - value = 0.0; - *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; - } - - //log_series_to_stderr(g->series, g->next_pos, value, "percentile"); - - g->next_pos = 0; - - return value; -} |