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264 commits

Author SHA1 Message Date
Aliaksandr Valialkin
c22114c6f0 lib/storage: tune tag filters search logic 
Tune the logic according to the logs provided at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338#issuecomment-864293624

The previous logic had a race when multiple concurrent queries execute the same tag filter without prior stats.
This could result in incorrectly stored stats for such tag filter, which then could result in non-optimal sorting of tag filters
for further queries.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338
 2021-06-23 13:29:39 +03:00
Aliaksandr Valialkin
84fb59b0ba lib/storage: move deletedMetricIDs set from indexDB to Storage 
This makes consitent the list of deleted metricIDs when it is used from both the current indexDB and the previous indexDB (aka extDB).
This should fix the issue, which could lead to storing new samples under deleted metricIDs after indexDB rotation.
See more details at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1347#issuecomment-861232136 .

Thanks to @tangqipengleoo for the initial analysis and the pull request - https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1383 .

This commit resolves the issue in more generic way compared to https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1383 .

The downside of the commit is the deletedMetricIDs set isn't cleaned from the metricIDs outside the retention. It needs app restart.
This should be OK in most cases.
 2021-06-15 15:04:30 +03:00
Aliaksandr Valialkin
c4f3fbfa5d lib/storage: reset cache on disk during series deletion and during indexdb rotation 
This should prevent from inconsistent behavior (aka partially missing data for some time series) after unclean shutdown.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1347
 2021-06-11 12:42:28 +03:00
Aliaksandr Valialkin
96b691a0ab lib/storage: properly account the number of loops spent when matching for or suffixes 
This may help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338
 2021-06-08 13:06:12 +03:00
Aliaksandr Valialkin
f54133b200 lib/storage: do not populate MetricID->MetricName cache during data ingestion 
This cache isn't needed during data ingestion, so there is no need in spending RAM on it.

This reduces RAM usage on data ingestion path by 30%
 2021-05-24 03:02:46 +03:00
Aliaksandr Valialkin
d7be2753c0 lib/storage: substitute GetTSDBStatusForDate with GetTSDBStatusWithFiltersForDate with nil tfss 2021-05-13 09:02:33 +03:00
Aliaksandr Valialkin
a22a17dc66 lib/storage: merge getTSDBStatusForDate with getTSDBStatusWithFiltersForDate 
These functions are non-trivial, while their code has minimal differences.
It is better from maintainability PoV to merge these functions into a single function.
 2021-05-12 17:56:53 +03:00
Aliaksandr Valialkin
832651c6c2 app/vmselect: follow up after 8a0678678b 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1168
 2021-05-12 17:18:30 +03:00
Nikolay
8a0678678b
Adds tsdb match filters (#1282) 
* init work on filters

* init propose for status filters

* fixes tsdb status
adds test

* fix bug

* removes checks from test
 2021-05-12 15:18:45 +03:00
Aliaksandr Valialkin
33f7bacb01 lib/storage: properly apply time range when matching an empty filter 
It must match all the time series on the given time range.
Previously it was matched to all the time series without the restriction on the given time range.
 2021-05-11 01:12:05 +03:00
Aliaksandr Valialkin
75c2c813fc lib/storage: remove dead code after the commit 3ccf7ea20c 2021-05-08 20:14:11 +03:00
Aliaksandr Valialkin
251747e253 lib/storage: code clarification: remove caching the found metricName in searchMetricName 2021-04-13 10:22:21 +03:00
Aliaksandr Valialkin
df32d2836c lib/storage: properly handle big time ranges passed to /api/v1/labels and /api/v1/label/<labelName>/values 
It should be faster querying all the labels and/or all the values instead of querying per-day labels/values on time ranges exceeding maxDaysForPerDaySearch
 2021-04-07 13:33:46 +03:00
Aliaksandr Valialkin
6e855d4b82 lib/storage: tune loopsCountPerMetricNameMatch according to production workload 2021-03-25 13:27:47 +02:00
Aliaksandr Valialkin
8e2afdf568 lib/storage: improve Search.NextMetricBlock performance by using MetricID->MetricName cache 2021-03-22 22:49:18 +02:00
Aliaksandr Valialkin
910092ca4d lib/storage: tune loopsCountPerMetricNameMatch 2021-03-22 12:53:17 +02:00
Aliaksandr Valialkin
45dabfac1b lib/storage: faster move heavy filters to the end of list 2021-03-17 15:12:13 +02:00
Aliaksandr Valialkin
ccfb0ae2d3 lib/storage: limit loops count in order to reduce max CPU usage during filter search 2021-03-17 00:49:26 +02:00
Aliaksandr Valialkin
576a80b3d9 lib/storage: do not modify filterLoopsCount stats with loopsCount stats 
Such a modification can result in incorrect filter sorting later
 2021-03-17 00:49:26 +02:00
Aliaksandr Valialkin
fd86a7dc1d lib/storage: time series search optimization according to production workload profiling 
Do not pass filter metric ids to getMetricIDsForTagFilter, since it has been appeared that this slows down
the function by multiple times when it finds big number of metricIDs (tens of millions).
 2021-03-16 20:01:43 +02:00
Aliaksandr Valialkin
e36fbfae5b lib/storage: further tuning for time series search 2021-03-16 18:46:22 +02:00
Aliaksandr Valialkin
dd7e82c34f app/vmstorage: add -logNewSeries command-line flag for determining the source of series churn rate 2021-03-15 22:38:50 +02:00
Aliaksandr Valialkin
9c77e34ef9 lib/storage: further tuning for time series selector code 2021-03-15 20:31:34 +02:00
Aliaksandr Valialkin
3ccf7ea20c lib/storage: tune per-day index search 2021-03-15 13:31:55 +02:00
Aliaksandr Valialkin
f669531506 lib/storage: further tune filters sorting logic 2021-03-12 00:53:04 +02:00
John Belmonte
364fdf4a56
spelling fix: adjacent (#1115) 2021-03-09 09:18:19 +02:00
Aliaksandr Valialkin
345980f78f lib/storage: go fmt 2021-03-08 12:03:31 +02:00
Aliaksandr Valialkin
18fe0ff14b lib/storage: tune loopsCount estimations in getMetricIDsForTagFilterSlow 
The adjusted estmations give up to 2x lower median response times on 200qps /api/v1/query_range workload
 2021-03-07 21:12:35 +02:00
Aliaksandr Valialkin
2c44178645 lib/storage: consistency renaming: durationsPerDateTagFilterCache -> loopsPerDateTagFilterCache 2021-02-23 15:47:19 +02:00
faceair
15d61c4879
lib/storage: correct tagfilter match cost (#1079) 2021-02-22 21:46:56 +02:00
Aliaksandr Valialkin
636c55b526 lib/mergeset: reduce memory usage for inmemoryBlock by using more compact items representation 
This also should reduce CPU time spent by GC, since inmemoryBlock.items don't have pointers now,
so GC doesn't need visiting them.
 2021-02-21 22:06:47 +02:00
Aliaksandr Valialkin
388cdb1980 lib/storage: do not re-calculate stats for heavy tag filters 
This should reduce the number of slow queries when stats for heavy tag filters was recalculated.
 2021-02-21 21:39:01 +02:00
Aliaksandr Valialkin
e540c02014 lib/storage: prevent from running identical heavy tag filters in concurrent queries when measuring the number of loops for such tag filter. 
This should reduce CPU usage spikes when measuring the number of loops needed for heavy tag filters
 2021-02-18 13:58:18 +02:00
Aliaksandr Valialkin
711f8a5b8d lib/storage: sort tag filters by the number of loops they need for the execution 
This metric should work better than the filter execution duration, since it cannot be distorted
by concurrently running queries.
 2021-02-18 12:47:38 +02:00
Aliaksandr Valialkin
faad6f84a4 lib/storage: return back filter arg to getMetricIDsForTagFilter function 
The filter arg has been removed in the commit c7ee2fabb8
because it was preventing from caching the number of matching time series per each tf.

Now the cache contains duration for tf execution, so the filter shouldn't break such caching.
 2021-02-17 19:33:22 +02:00
Aliaksandr Valialkin
d4849561ef app/vmstorage: export vm_composite_filter_success_conversions_total and vm_composite_filter_missing_conversions_total metrics 2021-02-17 19:13:38 +02:00
Aliaksandr Valialkin
63fc140624 lib/storage: tag filters sorting... 2021-02-17 17:55:29 +02:00
Aliaksandr Valialkin
74424b55ee lib/storage: further tune tag filters sorting 2021-02-17 17:28:15 +02:00
Aliaksandr Valialkin
442fcfec5a lib/storage: tune the logic for sorting tag filters according the their exeuction times 2021-02-17 15:00:08 +02:00
Aliaksandr Valialkin
d61f7b7279 lib/storage: more tuning for tag filters sorting according the time they take 2021-02-16 21:22:23 +02:00
Aliaksandr Valialkin
ca191696fe lib/storage: tune sorting for tag filters 2021-02-16 13:04:49 +02:00
Aliaksandr Valialkin
ecf132933e lib/storage: increase match cost for negative tag filters, since they need to scan all the label pairs 2021-02-15 16:34:23 +02:00
Aliaksandr Valialkin
71c417427c lib/storage: sort tag filters by actual execution time instead of by the number of matching time series 
This should improve query speed for queries with regexp filters matching small number of time series
on a label with big number of unique values.
 2021-02-15 00:18:13 +02:00
Aliaksandr Valialkin
0e26b7168a lib/storage: return back in-order applying of tag filters, since concurrently executing tag filters can result in CPU and RAM waste in common case 2021-02-10 22:41:04 +02:00
Aliaksandr Valialkin
b51c23dc5b lib/storage: parallelize tag filters execution a bit 
This should reduce execution time when a query contains multiple tag filters and each such filter matches big number of time series.
 2021-02-10 18:12:25 +02:00
Aliaksandr Valialkin
c7ee2fabb8 lib/storage: remove filter arg from getMetricIDsForDateTagFilter function 
The `filter` arg breaks the logic for sorting tag filters by the matching metrics,
which may result in non-optimal performance during time series search.
 2021-02-10 18:12:20 +02:00
Aliaksandr Valialkin
cdecf83ce5 app/vmstorage: export vm_composite_index_min_timestamp metric 2021-02-10 17:14:08 +02:00
Aliaksandr Valialkin
553016ea99 lib/storage: disable composite index usage when querying old data 2021-02-10 14:57:50 +02:00
Aliaksandr Valialkin
fcb7655d1e lib/storage: fix metric name match for composite filter 2021-02-10 01:27:45 +02:00
Aliaksandr Valialkin
c7dccebaef lib/storage: optimize search by label filters matching big number of time series 2021-02-10 00:44:54 +02:00
Aliaksandr Valialkin
a4140de9e6 lib/mergeset: unconditionally cache indexdb blocks 
Production workloads show that indexdb blocks must be cached unconditionally for reducing CPU usage.
This shouldn't increase memory usage too much, since unused blocks are removed from the cache every two minutes.
 2021-02-09 00:47:50 +02:00
Aliaksandr Valialkin
157c02622b app/vmselect: add ability to set Graphite-compatible filter via {__graphite__="foo.*.bar"} syntax 2021-02-03 01:21:54 +02:00
Aliaksandr Valialkin
4aaee33860 lib/storage: do not show artifically created label for reverse Graphite labels at /api/v1/labels page 2020-11-16 00:44:35 +02:00
Aliaksandr Valialkin
b378cd6ed8 app/vmselect: optimize querying for /api/v1/labels and /api/v1/label/<name>/values when start and end args are set 2020-11-05 01:01:33 +02:00
Aliaksandr Valialkin
fe289331dd lib/storage: remove obsolete code 2020-11-02 19:11:59 +02:00
faceair
d2960a20e0
evaluate the execution cost of all tag filters (#824) 
* evaluate the execution cost of all tag filters

* fix suffixes typo
 2020-10-17 00:46:55 +03:00
Aliaksandr Valialkin
764dc2499f lib/storage: code cleanup after 10f2eedee0 
Remove the code that uses metricIDs caches for the current and the previous hour during metricIDs search,
since this code became unused after implementing per-day inverted index almost a year ago.

While at it, fix a bug, which could prevent from finding time series with names containing dots (aka Graphite-like names
such as `foo.bar.baz`).
 2020-10-01 19:06:23 +03:00
Aliaksandr Valialkin
10f2eedee0 lib/storage: imrpove cache effectiveness for time series ids matching the given filters 
Previously the maximum cache lifetime has been limited by 10 seconds. Now it is extended up to a day.
This should reduce CPU usage in the following cases:

* when querying recently added data with small churn rate for time series
* when querying historical data
 2020-10-01 14:38:25 +03:00
Aliaksandr Valialkin
a69234ed18 lib/storage: code prettifying after be5e1222f3 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/781
 2020-09-22 00:36:45 +03:00
faceair
be5e1222f3
add filter to getMetricIDs (#783) 
* add getMetricIDs filter

* check nil filter before use
 2020-09-22 00:33:43 +03:00
Aliaksandr Valialkin
f6bc608e86 app/vmselect: initial implementation of Graphite Metrics API 
See https://graphite-api.readthedocs.io/en/latest/api.html#the-metrics-api
 2020-09-11 00:30:01 +03:00
Aliaksandr Valialkin
9043a509a3 lib/storage: properly check timeouts and pace limits 
Previously they were checked on every iteration for small number of iterations
 2020-08-07 08:40:37 +03:00
Aliaksandr Valialkin
8e44fba76d lib/storage: reduce the frequency (and overhead) for timeout and pace limiter checks by 4x 2020-08-06 18:45:55 +03:00
Aliaksandr Valialkin
54ef2d8112 lib/storage: slightly reduce code difference between single-node and cluster versions 2020-07-24 00:31:16 +03:00
Aliaksandr Valialkin
039c9d2441 lib/storage: respect -search.maxQueryDuration when searching for time series in inverted index 
Previously the time spent on inverted index search could exceed the configured `-search.maxQueryDuration`.
This commit stops searching in inverted index on query timeout.
 2020-07-23 21:21:42 +03:00
Aliaksandr Valialkin
2a45871823 lib/storage: add more fine-grained pace limiting for search 2020-07-23 19:26:08 +03:00
Aliaksandr Valialkin
d3442b40b2 lib/uint64set: optimize adding items to the set via Set.AddMulti 2020-07-21 20:56:59 +03:00
Aliaksandr Valialkin
e1107fec10 lib/storage: reset MetricName->TSID cache after marking metricIDs as deleted 
This is a follow-up commit after 12b16077c4 ,
which didn't reset the `tsidCache` in all the required places.
This could result in indefinite errors like:

    missing metricName by metricID ...; this could be the case after unclean shutdown; deleting the metricID, so it could be re-created next time

Fix this by resetting the cache inside deleteMetricIDs function.
 2020-07-14 14:06:32 +03:00
Aliaksandr Valialkin
0b2086b7a5 app/vminsert: prevent from adding and/or selecting labels with empty values 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/600
 2020-07-02 23:14:11 +03:00
Aliaksandr Valialkin
d5dddb0953 all: use %w instead of %s for wrapping errors in fmt.Errorf 
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
 2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
ae1cc0fc4b lib/storage: properly match {tag!="|foo"} filters 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/546
 2020-06-10 19:35:56 +03:00
Aliaksandr Valialkin
d186472081 lib/storage: improve search speed for time series matching Graphite whildcards such as foo.*.bar.baz 
Add index for reverse Graphite-like metric names with dots. Use this index during search for filters
like `__name__=~"foo\\.[^.]*\\.bar\\.baz"` which end with non-empty suffix with dots, i.e. `.bar.baz` in this case.

This change may "hide" historical time series during queries. The workaround is to add `[.]*` to the end of regexp label filter,
i.e. "foo\\.[^.]*\\.bar\\.baz" should be substituted with "foo\\.[^.]*\\.bar\\.baz[.]*".
 2020-05-27 21:45:52 +03:00
Aliaksandr Valialkin
4fc33163c4 lib/storage: optimize ingestion pefrormance for new time series 2020-05-15 13:24:37 +03:00
Aliaksandr Valialkin
0afd48d2ee lib: extract common code for returning fast unix timestamp into lib/fasttime 2020-05-14 23:02:07 +03:00
Aliaksandr Valialkin
827a3a7866 lib/storage: document that getnerateUniqueMetricID should return dense ids 2020-05-14 14:08:45 +03:00
Aliaksandr Valialkin
cc00a2c453 lib/storage: typo fixes in error messages: or -> of 2020-05-12 12:12:42 +03:00
Aliaksandr Valialkin
83aca79137 lib/storage: recover when metricID->metricName entry is missing in the inverted index after unclean shutdown 
Newly added index entries can be missing after unclean shutdown, since they didn't flush to persistent storage yet.
Log about this and delete the corresponding metricID, so it could be re-created next time.
 2020-04-28 12:00:33 +03:00
Aliaksandr Valialkin
491b31b369 lib/storage: postpone label filters matching too many time series instead of giving up with error 
This should reduce the frequency of the following errors:

    cannot find tag filter matching less than N time series; either increase -search.maxUniqueTimeseries or use more specific tag filters

    more than N time series found on the time range [...]; either increase -search.maxUniqueTimeseries or shrink the time range
 2020-04-24 21:13:50 +03:00
Aliaksandr Valialkin
364db13c9c app/vmselect: add /api/v1/status/tsdb page with useful stats for locating root cause for high cardinality issues 
See https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/425
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/268
 2020-04-22 22:03:43 +03:00
Aliaksandr Valialkin
c1de3f67b4 lib/storage: skip metricID if the corresponding metricID->metricName is missing in inverted index during search 
This case is possible when the corresponding metricID->metricName entry didn't propagate to inverted index yet.

This should fix the following error:

error when searching tsids for tfss [...]: cannot find metricName by metricID 1582417212213420669: EOF
 2020-04-15 00:06:43 +03:00
Aliaksandr Valialkin
e0d0348f36 lib/storage: add missing reset for tagFilter.matchesEmptyValue on tagFilter.Init 2020-04-01 17:42:44 +03:00
Aliaksandr Valialkin
972713bd79 lib/storage: add fast path for the previous indexdb search if it doesn't contain per-day inverted index yet 2020-03-31 12:51:21 +03:00
Aliaksandr Valialkin
5d99ca6cfc lib/storage: optimize per-day inverted index search for tag filters matching big number of time series 
- Sort tag filters in the ascending number of matching time series
  in order to apply the most specific filters first.
- Fall back to metricName search for filters matching big number of time series
  (usually this are negative filters or regexp filters).
 2020-03-31 00:48:35 +03:00
Aliaksandr Valialkin
df91d2d91f lib/storage: remove obsolete code 2020-03-13 22:48:17 +02:00
Aliaksandr Valialkin
f9289b804a lib/storage: reduce memory allocations when merging metricID sets 2020-01-17 22:10:44 +02:00
Aliaksandr Valialkin
a247236f61 lib/storage: fall back to global inverted index if a filter match too many time series in per-day index 
Previously this resulted to error message. The query may succeed via search in global index.
 2019-12-03 14:48:31 +02:00
Aliaksandr Valialkin
f52874dab4 lib/storage: optimize regexp filter search 2019-12-03 00:43:12 +02:00
Aliaksandr Valialkin
20812008a7 lib/storage: remove metricID with missing metricID->metricName entry 
The metricID->metricName entry can be missing in the indexdb after unclean shutdown
when only a part of entries for new time series is written into indexdb.

Recover from such a situation by removing the broken metricID. New metricID
will be automatically created for time series with the given metricName
when new data point will arive to it.
 2019-12-02 20:46:44 +02:00
Aliaksandr Valialkin
da98703748 app/vmselect/promql: optimize binary search over big number of samples during rollup calculations 2019-11-25 14:01:46 +02:00
Aliaksandr Valialkin
f652c0f40f lib/storage: move non-matching tag filters to the top at matchTagFilters 
This should reduce the amount of useless work needed for matching the next metricNames.
 2019-11-21 21:35:13 +02:00
Aliaksandr Valialkin
b8cde6cce1 lib/storage: speed up time series search for queries with multiple filters 
Use optimized specialized binary search for uint64 metricIDs instead of generic sort.Search.
 2019-11-21 18:43:17 +02:00
Aliaksandr Valialkin
2ab4cea5e5 lib/storage: always start using per-day inverted index on the next day after its creation 
The current day could miss entries for already stopped time series before
enabling per-day index.

This fixes the issue when queries return empty results during the first hour after
upgrading to v1.29.*
 2019-11-16 12:11:25 +02:00
Aliaksandr Valialkin
86a1cd700b lib/storage: remove inmemory index for recent hour, since it uses too much memory 
Production workload shows that the index requires ~4Kb of RAM per active time series.
This is too much for high number of active time series, so let's delete this index.

Now the queries should fall back to the index for the current day instead of the index
for the recent hour. The query performance for the current day index should be good enough
given the 100M rows/sec scan speed per CPU core.
 2019-11-13 17:58:07 +02:00
Aliaksandr Valialkin
33895d4a0f lib/storage: add missing increment for recentHourInvertedIndexSearchCalls 2019-11-13 15:13:51 +02:00
Aliaksandr Valialkin
c57eb0ff83 lib/storage: add -disableRecentHourIndex flag for disabling inmemory index for recent hour 
This may be useful for saving RAM on high number of time series aka high cardinality
 2019-11-13 15:02:51 +02:00
Aliaksandr Valialkin
ca259864e2 lib/storage: return back inmemory inverted index for recent hour 
Issues fixed:
- Slow startup times. Now the index is loaded from cache during start.
- High memory usage related to superflouos index copies every 10 seconds.
 2019-11-13 13:11:04 +02:00
Aliaksandr Valialkin
01bb3c06c7 lib/storage: remove inmemory inverted index for recent hours 
Production load with >10M active time series showed it could
slow down VictoriaMetrics startup times and could eat
all the memory leading to OOM.

Remove inmemory inverted index for recent hours until thorough
testing on production data shows it works OK.
 2019-11-13 10:45:53 +02:00
Aliaksandr Valialkin
8e8f98f712 lib/storage: add tests for dateMetricIDCache 2019-11-11 13:21:57 +02:00
Aliaksandr Valialkin
3956003dd0 lib/storage: reorganize the code in getStartDateForPerDayInvertedIndex according to golangci-lint 2019-11-10 00:38:59 +02:00
Aliaksandr Valialkin
ee7765b10d lib/storage: implement per-day inverted index 2019-11-10 00:02:46 +02:00
Aliaksandr Valialkin
5810ba57c2 lib/storage: use specialized cache for (date, metricID) entries 
This improves ingestion performance.
 2019-11-09 23:06:11 +02:00
Aliaksandr Valialkin
e573ef2126 lib/storage: remove unused code from getMetricIDsForTimeRange: it is expected that time range is always non-zero 2019-11-09 19:03:34 +02:00
Aliaksandr Valialkin
823fa085ef lib/storage: properly set time range when deleting time series 2019-11-09 18:49:49 +02:00
Aliaksandr Valialkin
695c1dc5eb lib/storage: obtain all the time series ids from (tag->metricIDs) rows instead of (metricID->TSID) rows, since this much faster 2019-11-09 18:04:33 +02:00
Aliaksandr Valialkin
cdbe848102 lib/storage: small code prettifying 2019-11-09 14:19:52 +02:00
Aliaksandr Valialkin
6ad7fe8eeb lib/storage: export vm_new_timeseries_created_total metric for determining time series churn rate 2019-11-08 21:21:07 +02:00
Aliaksandr Valialkin
d888b21657 lib/storage: add inmemory inverted index for the last hour 
It should improve performance for `last N hours` dashboards with update intervals smaller than 1 hour.
 2019-11-08 21:21:07 +02:00
Aliaksandr Valialkin
e472f0b23b lib/storage: substitute error message about unsorted items in the index block after metricIDs merge with counter 
The origin of the error has been detected and documented in the code,
so it is enough to export a counter for such errors at `vm_index_blocks_with_metric_ids_incorrect_order_total`,
so it could be monitored and alerted on high error rates.

Export also the counter for processed index blocks with metricIDs - `vm_index_blocks_with_metric_ids_processed_total`,
so its' rate could be compared to `rate(vm_index_blocks_with_metric_ids_incorrect_order_total)`.
 2019-11-06 14:28:11 +02:00
Aliaksandr Valialkin
c51ca04a43 lib/storage: take into account the requested time range when caching TSIDs for the given tag filters 2019-11-06 14:28:11 +02:00
Aliaksandr Valialkin
e37f06dc52 lib/storage: dump incorrectly sorted items on a single line; this should simplify error reporting 2019-11-05 18:44:22 +02:00
Aliaksandr Valialkin
885ba17905 lib/storage: separate the max inverted index scan loops per metric into fast and slow loops 
Slow loops could require seeks and expensive regexp matching, while fast loops just scans
all the metricIDs for the given `tag=value` prefix. So these operations must have separate
max loops multiplier.
 2019-11-05 17:27:48 +02:00
Aliaksandr Valialkin
b9a06e8e74 lib/storage: skip repeated useless work when intersection of metricIDs with the given filter is too expensive 
This should improve performance for query filters over big number of time series.
 2019-11-05 14:19:13 +02:00
Aliaksandr Valialkin
30c8301b11 lib/storage: reduce the maximum inverted index scans before giving up to label filters matching by metric name 
The new value reduces the amount of wasted work during index scans over big number of time series.
 2019-11-05 14:19:06 +02:00
Aliaksandr Valialkin
e53f9e553d lib/storage: try potentially faster tag filters at first, then apply slower tag filters 
The fastest tag filters are non-negative non-regexp, since they are the most specific.
The slowest tag filters are negative regexp, since they require scanning
all the entries for the given label.
 2019-11-05 14:19:01 +02:00
Aliaksandr Valialkin
02e0b19a62 lib/storage: tune the returned value from adjustMaxMetricsAdaptive 2019-11-04 00:44:37 +02:00
Aliaksandr Valialkin
6be4456d88 lib/{storage,uint64set}: add Set.Union() function and use it 2019-11-04 00:44:37 +02:00
Aliaksandr Valialkin
97ce4e03a5 all: add support for GOARCH=386 and fix all the issues related to 32-bit architectures such as GOARCH=arm 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/212
 2019-10-17 18:23:23 +03:00
Aliaksandr Valialkin
f6334bffa1 lib/storage: harden the check that the original items are sorted after mergeTagToMetricIDsRows fails to preserve sort order 2019-10-09 12:13:17 +03:00
Aliaksandr Valialkin
c1cf7d9f93 lib/storage: add tests for mergeTagToMetricIDsRows and return the original items if the function breaks items` ordering. 
This should save from data corruption issues revealed in the previous releases up to v1.28.0-beta5.
 2019-10-08 16:27:35 +03:00
Aliaksandr Valialkin
c39355921e lib/storage: verify whether items are sorted in the end of call to mergeTagToMetricIDsRows 
This should prevent from inverted index corruption if bug in mergeTagToMetricIDsRows is discovered.
 2019-09-26 13:13:41 +03:00
Aliaksandr Valialkin
2444433d83 lib/storage: add missing break in removeDuplicateMetricIDs 2019-09-25 18:23:43 +03:00
Aliaksandr Valialkin
ea4c828bae lib/storage: remove duplicate MetricIDs in tag->metricIDs items before writing them into inverted index 2019-09-25 17:55:13 +03:00
Aliaksandr Valialkin
aebc45ad26 lib/{mergeset,storage}: do not cache inverted index blocks containing tag->metricIDs items 
This should reduce the amounts of used RAM during queries with filters over big number of time series.
 2019-09-25 14:02:15 +03:00
Aliaksandr Valialkin
b986516fbe lib/storage: create and use lib/uint64set instead of map[uint64]struct{} 
This should improve inverted index search performance for filters matching big number of time series,
since `lib/uint64set.Set` is faster than `map[uint64]struct{}` for both `Add` and `Has` calls.
See the corresponding benchmarks in `lib/uint64set`.
 2019-09-24 21:17:55 +03:00
Aliaksandr Valialkin
ef2296e420 lib/storage: typo fix: return dstData instead of data from mergeTagToMetricIDsRows 2019-09-24 19:32:34 +03:00
Aliaksandr Valialkin
a6086cde78 lib/storage: limit the number of metricIDs in tag->metricIDs row 
This reduces the overhead on index and metaindex in lib/mergeset
 2019-09-24 00:49:51 +03:00
Aliaksandr Valialkin
c9063ece66 lib/storage: share tsids across all the partSearch instances 
This should reduce memory usage when big number of time series matches the given query.
 2019-09-23 22:35:15 +03:00
Aliaksandr Valialkin
4e26ad869b lib/{storage,mergeset}: verify PrepareBlock callback results 
Do not touch the first and the last item passed to PrepareBlock
in order to preserve sort order of mergeset blocks.
 2019-09-23 20:43:13 +03:00
Aliaksandr Valialkin
0adebae1f8 lib/storage: generate the first tag->metricIDs item in a mergeset block with a single metricID 
The first item from each mergeset block goes into index (lib/mergeset.blockHeader),
so it must be short in order to reduce index size.
 2019-09-22 19:21:33 +03:00
Aliaksandr Valialkin
0686ac52c3 lib/{storage,mergeset}: merge tag->metricID rows into tag->metricIDs rows for common tag values 
This should improve lookup performance if the same `label=value` pair exists
in big number of time series.
This should also reduce memory usage for mergeset data cache, since `tag->metricIDs` rows
occupy less space than the original `tag->metricID` rows.
 2019-09-20 22:06:41 +03:00
Aliaksandr Valialkin
a544f49c2b lib/storage: optimize selecting all the metricIDs by scanning MetricID->TSID entries instead of tag->MetricID entries 
The number of MetricID->TSID entries is smaller than the number of tag->MetricID entries
and MetricID->TSID entries are usually shorter than tag->MetricID entries.
This should improve performance when selecting all the metricIDs.
 2019-09-20 11:54:10 +03:00
Aliaksandr Valialkin
a84fe76677 lib/storage: use sort.Sort instead of sort.slice in getSortedMetricIDs 2019-09-19 20:07:22 +03:00
Aliaksandr Valialkin
3a697a935a lib/storage: skip duplicate call to intersectMetricIDsWithTagFilter on zero successful intersects 2019-09-19 17:49:56 +03:00
Aliaksandr Valialkin
3d83f5d334 lib/storage: mark tag filter returning errFallbackToMetricNameMatch as useless 
This will save CPU on subsequent calls for this filter
 2019-09-18 19:10:32 +03:00
Aliaksandr Valialkin
8d35718dc6 lib/storage: properly construct keys for uselessTagFiltersCache and register useless negative tag filters there 2019-09-17 23:20:27 +03:00
Aliaksandr Valialkin
e1d76ec1f3 lib/storage: invalidate tagFilters -> TSIDS cache when newly added index data becomes visible to search 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/163
 2019-08-29 15:08:35 +03:00
Aliaksandr Valialkin
bf915fc0db lib/storage: report proper maxMetrics limit when more than -search.maxUniqueTimeseries series match the given filters 2019-08-27 14:21:42 +03:00
Aliaksandr Valialkin
4f738c8a15 lib/storage: try slower path for searching the tag filter with the minimum number of matching time series before giving up with increase -search.maxUniqueTimeseries error 2019-08-19 16:04:21 +03:00
Aliaksandr Valialkin
5b41122292 lib/storage: properly cache tagFilters -> TSIDs entries from historical index 2019-08-14 02:29:58 +03:00
Aliaksandr Valialkin
964c296f96 lib/storage: compress contents of cache for tagFilters -> TSIDs 
This should increase cache capacity
 2019-08-14 02:29:52 +03:00
Aliaksandr Valialkin
09fc6e22e5 all: use workingsetcache instead of fastcache 
This should reduce the amount of RAM required for processing time series
with non-zero churn rate.

The previous cache behavior can be restored with `-cache.oldBehavior` command-line flag.
 2019-08-13 21:39:34 +03:00
Aliaksandr Valialkin
a77e88db7d lib/storage: fix matching against tag filter with empty name 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/137
 2019-07-30 15:15:09 +03:00
Aliaksandr Valialkin
e75d5f47c4 lib/storage: remove unused function isTooBigTimeRangeForDateMetricIDs 2019-07-12 02:28:23 +03:00
Aliaksandr Valialkin
fc90ebf43c lib/storage: do not reduce maxMetrics on time ranges exceeding maxDaysForDateMetricIDs 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/95
 2019-07-12 02:20:34 +03:00
Aliaksandr Valialkin
43ea4ce428 lib/storage: remember and skip individual tag filters matching too many metrics 
This saves CPU time by skipping useless matching for individual tag filters.
 2019-07-11 14:48:30 +03:00
Aliaksandr Valialkin
1fe6d784d8 all: consistency renaming: bytesSize -> sizeBytes 2019-07-10 00:47:36 +03:00
Aliaksandr Valialkin
2ecb117082 lib/storage: skip non-matching metricIDs in sortedFilter 
This should improve performance for big sorteFilter lists.
 2019-06-29 13:48:32 +03:00
Aliaksandr Valialkin
c1be1e4342 lib/storage: optimize time series search by regexp filter 
This should improve search speed on label filters like `{foo=~"bar.+baz"}`
 2019-06-27 16:17:43 +03:00
Aliaksandr Valialkin
683bf2a11f lib/storage: make sure non-nil args are passed to openIndexDB 2019-06-25 20:10:04 +03:00
Aliaksandr Valialkin
eb2283a029 lib/storage: reduce too big maxMetrics in getTagFilterWithMinMetricIDsCountAdaptive 
This should improve performance on inverted index search for big amount of unique time series
when big -search.maxUniqueTimeseries is set.
 2019-06-25 19:55:27 +03:00