178 Commits

Author	SHA1	Message	Date
Aliaksandr Valialkin	d2f85816ea	lib/{mergeset,storage}: prevent from long wait time when creating a snapshot under high data ingestion rate ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3551 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3873	2023-03-19 00:19:02 -07:00
Aliaksandr Valialkin	8aeee8bcca	lib/{fs,mergeset,storage}: substitute os.Open()+os.File.Readdir() with os.ReadDir() ... This simplifies code a bit	2023-03-17 21:03:52 -07:00
Nikolay	361e1b1165	lib{mergset,storage}: prevent possible race condition with logging st… (#3900) (#3917) ... lib{mergset,storage}: prevent possible race condition with logging stats for merges Previously partwrapper could be release by background process and reference for part may be invalid during logging stats. It will lead to panic at vmstorage https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3897	2023-03-06 11:11:08 +01:00
Aliaksandr Valialkin	1ad0d22e80	lib/storage: follow-up for 39cdc546dd ... - Use flag.Duration instead of flagutil.Duration for -snapshotCreateTimeout, since the flagutil.Duration is intended mostly for big durations, e.g. days, months and years, while the -snapshotCreateTimeout is usually smaller than one hour. - Add links to https://docs.victoriametrics.com/#how-to-work-with-snapshots in docs/CHANGELOG.md, so readers could easily find the corresponding docs when reading the changelog. - Properly remove all the created directories on unsuccessful attempt to create snapshot in Storage.CreateSnapshot(). Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3551	2023-02-27 13:11:10 -08:00
Zakhar Bessarab	75b8733e0b	lib/{fs,mergeset,storage}: skip .must-remove. dirs when creating snapshot (#3858) (#3867)	2023-02-24 12:43:43 -08:00
Oleksandr Redko	0e1c395609	app,lib: fix typos in comments (#3804)	2023-02-13 09:32:35 -08:00
Aliaksandr Valialkin	9053745a6f	lib/{mergeset,storage}: allow at least 3 concurrent flushes during background merges on systems with 1 or 2 CPU cores ... This should prevent from data ingestion slowdown and query performance degradation on systems with small number of CPU cores (1 or 2), when big merge is performed. This should help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3790 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3337	2023-02-11 12:09:13 -08:00
Nikolay	554876cc38	lib/storage: fixes finalDedup for backfilled data (#3737) ... previously historical data backfilling may trigger force merge for previous month every hour it consumes cpu, disk io and decrease cluster performance. Following commit fixes it by applying deduplication for InMemoryParts	2023-02-01 09:57:02 -08:00
Nikolay	4af05065d1	lib/storage: properly release parts inMerge lock (#3711) ... if storage doesn't have enough disk space, finalDedupWatcher holds inMerge lock for all parts and never release it until storage restart	2023-01-26 08:57:36 -08:00
Aliaksandr Valialkin	c5e858461c	lib/{storage,mergeset}: wake up background merges as soon as there is a potential work for them ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3647	2023-01-18 01:10:43 -08:00
Aliaksandr Valialkin	70b5a6fb28	lib/{storage,mergeset}: do not run assisted merges when flushing pending samples to parts ... Assisted merges are intended to be performed by goroutines, which accept the incoming samples, in order to limit the data ingestion rate. The worker, which converts pending samples to parts, shouldn't be penalized by assisted merges, since this may result in increased number of pending rows as seen at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3647#issuecomment-1385039142 when the assisted merge takes too much time.	2023-01-18 00:25:33 -08:00
Aliaksandr Valialkin	0c90b49e4b	lib/storage: use better naming for a function returning new []rawRows - newRawRowsBlock() -> newRawRows()	2023-01-18 00:01:21 -08:00
Aliaksandr Valialkin	103dfd0525	lib/{mergeset,storage}: do not slow down concurrently executed queries during assisted merges ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3647 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3641 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/648 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/291	2023-01-16 14:45:40 -08:00
Aliaksandr Valialkin	8dc04a86f6	lib/{storage,mergeset}: tune the threshold for assisted merge ... The https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3425#issuecomment-1359117221 reveals that CPU usage for incoming queries may significantly increase when the number of in-memory parts becomes too big. This commit reduces the maximum number of in-memory parts before starting the assisted merge during data ingestion. This should reduce CPU usage for incoming queries, since they need to inspect lower number of in-memory parts. This should help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3425	2022-12-28 14:42:45 -08:00
Aliaksandr Valialkin	ea7940e5a7	lib/mergeset: reduce the parts threshold before starting assisted merges ... This should improve query speed in general case. This is a follow-up for d1af6046c7	2022-12-13 09:14:08 -08:00
Aliaksandr Valialkin	2a190f6451	lib/{mergeset,storage}: do not block small merges by pending big merges - assist with small merges instead ... Blocked small merges may result into big number of small parts, which, in turn, may result in increased CPU and memory usage during queries, since queries need to inspect all the existing small parts. The issue has been introduced in 8189770c50 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3337	2022-12-12 17:01:33 -08:00
Aliaksandr Valialkin	0a9992a9c6	lib/{storage,mergeset}: log the duration for flushing in-memory parts on graceful shutdown	2022-12-05 21:55:21 -08:00
Aliaksandr Valialkin	7d5c64eb7a	all: add -inmemoryDataFlushInterval command-line flag for controlling the frequency of saving in-memory data to disk ... The main purpose of this command-line flag is to increase the lifetime of low-end flash storage with the limited number of write operations it can perform. Such flash storage is usually installed on Raspberry PI or similar appliances. For example, `-inmemoryDataFlushInterval=1h` reduces the frequency of disk write operations to up to once per hour if the ingested one-hour worth of data fits the limit for in-memory data. The in-memory data is searchable in the same way as the data stored on disk. VictoriaMetrics automatically flushes the in-memory data to disk on graceful shutdown via SIGINT signal. The in-memory data is lost on unclean shutdown (hardware power loss, OOM crash, SIGKILL). Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3337	2022-12-05 15:28:09 -08:00
Aliaksandr Valialkin	9ac1174493	lib/{mergeset,storage}: add start background workers via startBackgroundWorkers() function	2022-12-04 00:01:14 -08:00
Aliaksandr Valialkin	813e8402f6	lib/storage: pass a single arg - rowsPerBlock - to getCompressLevel() function instead of two args	2022-12-03 23:10:26 -08:00
Aliaksandr Valialkin	bb93494eac	lib/{storage,mergeset}: use a single sync.WaitGroup for all background workers ... This simplifies the code	2022-12-03 23:03:32 -08:00
Aliaksandr Valialkin	ea55c16422	lib/{mergeset,storage}: pass compressLevel to blockStreamWriter.InitFromInmemoryPart ... This allows packing in-memory blocks with different compression levels depending on its contents. This may save memory usage.	2022-12-03 22:47:06 -08:00
Aliaksandr Valialkin	10a17bfa16	lib/{storage,mergeset}: consistency rename: `flushRaw{Rows,Items} -> flushPending{Rows,Items}	2022-12-03 22:18:05 -08:00
Aliaksandr Valialkin	d8d4d21d7a	lib/{mergeset,storage}: re-use the code for removing isInMerge flag at parts ... Move the common code into releasePartsToMerge() method and consistently use it throughout the code.	2022-12-02 17:07:52 -08:00
Aliaksandr Valialkin	ecb71a7221	lib/fs: add canOverwrite arg to WriteFileAtomically when it is allowed to overwrite the file atomically if it already exists	2022-10-26 01:08:35 +03:00
Aliaksandr Valialkin	a6d4711ac6	lib/storage: add support for retention filters (aka multiple retentions for distinct sets of time series) ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/143 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/289	2022-10-24 16:41:59 +03:00
Aliaksandr Valialkin	2fc82b846e	lib/storage: do not pass retentionMsecs and isReadOnly args explicitly - access them via Storage arg ... This makes code easier to read. This is a follow-up after d2d30581a0	2022-10-24 01:32:56 +03:00
Aliaksandr Valialkin	d51f9b9284	lib/storage: small code cleanups	2022-10-24 01:17:58 +03:00
Aliaksandr Valialkin	57ea7a3ee8	lib/storage: pass Storage to table and partition instead of getDeletedMetricIDs callback ... This improves code readability a bit.	2022-10-23 16:11:02 +03:00
Aliaksandr Valialkin	32b6ce691b	lib/storage: move common code to newRawRowsBlock() function	2022-10-21 14:46:06 +03:00
Aliaksandr Valialkin	2f8861ed9c	lib/storage: simplify code a bit after 3f5959c053	2022-10-21 14:39:44 +03:00
Aliaksandr Valialkin	1fb2be0cae	lib/{mergeset,storage}: simplify the code a bit after ae55ad8749	2022-10-21 14:33:15 +03:00
Aliaksandr Valialkin	edf3b7be47	lib/storage: try generating initial parts from inmemory rows with identical sizes under high ingestion rate ... This should improve background merge rate under high load a bit	2022-10-20 23:27:44 +03:00
Aliaksandr Valialkin	6855de311c	lib/{mergeset,storage}: avoid unaligned 64-bit atomic operation panic on 32-bit platforms ... The panic has been introduced in 68f3a02589 While at it, add padding to shard structs in order to avoid false sharing on mordern CPUs This should improve scalability on systems with many CPU cores	2022-10-20 16:24:46 +03:00
Aliaksandr Valialkin	6f69a88a5a	lib/storage: double the number of rawRows shards on multi-core systems ... This should increase data ingestion scalability on multi-core systems at the cost of slightly higher memory usage	2022-10-17 18:19:28 +03:00
Aliaksandr Valialkin	68f3a02589	lib/{storage,mergeset}: do not hold per-shard lock in fast path when adding per-shard items to the flush list	2022-10-17 18:01:55 +03:00
Aliaksandr Valialkin	6c9729d694	lib/storage: atomically remove parts inside partitions ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3038	2022-09-13 15:28:41 +03:00
Aliaksandr Valialkin	daa42e4f79	lib/storage: atomically remove partitions, which went outside the configured retention ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3038	2022-09-13 13:37:59 +03:00
Aliaksandr Valialkin	06f6de6d47	all: use os.{Read|Write}File instead of ioutil.{Read|Write}File ... The ioutil.{Read|Write}File is deprecated since Go1.16 - see https://tip.golang.org/doc/go1.16#ioutil VictoriaMetrics needs at least Go1.18, so it is safe to remove ioutil usage from source code. This is a follow-up for 02ca2342ab	2022-08-21 23:55:20 +03:00
Roman Khavronenko	fc2b8b4efd	lib/storage: bump max merge concurrency for small parts to 15 (#2997) ... * lib/storage: bump max merge concurrency for small parts to 15 The change is based on the feedback from users on github. Thier examples show, that limit of 8 sometimes become a bottleneck. Users report that without limit concurrency can climb up to 15-20 merges at once. Signed-off-by: hagen1778 <roman@victoriametrics.com> * Update lib/storage/partition.go Signed-off-by: hagen1778 <roman@victoriametrics.com> Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>	2022-08-21 23:37:14 +03:00
Roman Khavronenko	f42853275f	lib/storage: prevent excessive loops when storage is in RO (#2962) ... * lib/storage: prevent excessive loops when storage is in RO Returning nil error when storage is in RO mode results into excessive loops and function calls which could result into CPU exhaustion. Returning an err instead will trigger delays in the for loop and save some resources. Signed-off-by: hagen1778 <roman@victoriametrics.com> * document the change Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>	2022-08-09 12:17:47 +03:00
Aliaksandr Valialkin	6c66804fd3	all: locate throttled loggers via logger.WithThrottler() only once and then use them ... This reduces the contention on logThrottlerRegistryMu mutex when logger.WithThrottler() is called frequently from concurrent goroutines.	2022-06-27 12:34:30 +03:00
Roman Khavronenko	5f33445f66	lib/storage: limit max mergeConcurrency value for systems with high number of CPUs (#2673) ... Workers count for merges affects the max part size during merges. Such behaviour protects storage from running out of disk space for scenario when all workers are merging parts with the max size. This works very well for most cases. But for systems where high number of CPUs is allocated for vmstorage components this could significantly impact the max part size and result in more unmerged parts than expected. While checking multiple production highly loaded setups it was discovered that `max_over_time(vm_active_merges{type="storage/big}[1h]}"` rarely exceeds 2, and `max_over_time(vm_active_merges{type="storage/small}[1h]}"` rarely exceeds 4. The change in this commit limits the max value for concurrency accordingly. Signed-off-by: hagen1778 <roman@victoriametrics.com>	2022-06-07 15:02:55 +03:00
Aliaksandr Valialkin	fedfc9e686	lib/storage: stop background merge when storage enters read-only mode ... This should prevent from `no space left on device` errors when VictoriaMetrics under-estimates the additional disk space needed for background merge. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2603	2022-06-01 14:22:12 +03:00
Aliaksandr Valialkin	cb319b15bb	lib/storage: increase the number of rawRowsShard shards on systems with more than 4 CPU cores ... This should improve data ingestion scalability on systems with many CPU cores	2022-04-06 19:50:41 +03:00
Aliaksandr Valialkin	123a88bb65	lib/storage: reuse sync.WaitGroup objects ... This reduces GC load by up to 10% according to memory profiling	2022-04-06 14:00:50 +03:00
Aliaksandr Valialkin	b47f18f555	lib/{mergeset,storage}: tune compression levels for small blocks ... This should reduce CPU usage spent on compression	2022-02-25 15:34:13 +02:00
Aliaksandr Valialkin	6ae584b9b3	lib/{mergeset,storage}: properly limit cache sizes for indexdb ... Previously these caches could exceed limits set via `-memory.allowedPercent` and/or `-memory.allowedBytes`, since limits were set independently per each data part. If the number of data parts was big, then limits could be exceeded, which could result to out of memory errors. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2007	2022-01-20 18:45:03 +02:00
Aliaksandr Valialkin	727797a6fd	all: use logger.WithThrottler() where appropriate	2021-12-21 17:10:54 +02:00
Aliaksandr Valialkin	f22aab411b	lib/storage: properly update per-part min_dedup_interval file contents after merge ... Previously 0s was always written even if -dedup.minScrapeInterval was set to non-zero value This is a follow-up for 4ff647137a	2021-12-17 20:12:18 +02:00
Aliaksandr Valialkin	d36fdbe537	lib/storage: deduplicate samples more thoroughly ... Previously some duplicate samples may be left on disk for time series with high churn rate. This may result in higher disk space usage.	2021-12-15 16:00:30 +02:00
Aliaksandr Valialkin	ab4be24397	app/vmstorage: export vm_cache_size_max_bytes metrics for determining capacity of various caches ... The vm_cache_size_max_bytes metric can be used for determining caches which reach their capacity via the following query: vm_cache_size_bytes / vm_cache_size_max_bytes > 0.9	2021-12-02 10:30:01 +02:00
Aliaksandr Valialkin	2e43cd9d62	lib/storage: do not take into account -storage.minFreeDiskSpaceBytes during background merges	2021-12-01 12:30:03 +02:00
Aliaksandr Valialkin	71c0f7cce3	lib/storage: take into account -storage.minFreeDiskSpaceBytes when performing big merges ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/269	2021-11-30 12:56:53 +02:00
Aliaksandr Valialkin	b885bd9b7d	lib/{mergeset,storage}: improve the detection of the needed free space for background merge ... This should prevent from possible out of disk space crashes during big merges. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1560	2021-08-25 10:01:09 +03:00
Aliaksandr Valialkin	1950f57316	lib/storage: yet another attempt to properly determine disk space shortage, which prevents from optimal merges ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1373	2021-07-27 12:03:31 +03:00
Aliaksandr Valialkin	8055439fe4	lib/storage: properly detect free disk space shortage during data merge ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1373	2021-07-02 17:42:23 +03:00
Aliaksandr Valialkin	a207be3ffb	lib/storage: fix infinite loop introduced in aa9b56a046 ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1244	2021-06-17 14:27:30 +03:00
Aliaksandr Valialkin	0efd37cec1	lib/{mergeset,storage}: reduce the number of fsync calls on data ingestion path on systems with many cpu cores ... VictoriaMetrics maintains a buffer per CPU core for the ingested data. These buffers are flushed to disk every second. These buffers are flushed to disk in parallel starting from the commit 56b6b893ce . This resulted in increased write disk IO usage on systems with many cpu cores as described at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338#issuecomment-863046999 . This commit merges the per-CPU buffers into bigger in-memory buffers before flushing them to disk. This should reduce the rate of fsync syscalls and, consequently, the write disk IO on systems with many CPU cores. This should help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338 See also https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1244	2021-06-17 13:51:42 +03:00
Aliaksandr Valialkin	eb335d2c29	lib/storage: consistency renaming: getMaxRawRowsPerPartition -> getMaxRawRowsPerShard	2021-06-11 10:52:31 +03:00
Aliaksandr Valialkin	d06c0e7a94	lib/storage: reduce the amounts of memory which can be occupied by rawRow items during data ingestion on a system with many CPU cores	2021-06-11 10:49:02 +03:00
Aliaksandr Valialkin	95b735a883	lib/storage: allow filling all the rows up to their capacity in rawRowsShard.addRows ... This should reduce memory usage a bit on data ingestion path	2021-05-24 15:32:24 +03:00
Aliaksandr Valialkin	0fc857d363	lib/{mergeset,storage}: reduce the number of IFNO log messages like merged ... items across ... blocks in ... seconds ... Log these messages if the merge takes more than 30 seconds instead of 10 seconds.	2021-05-23 14:15:49 +03:00
Nikolay	62d58324dd	adds stalePartsRemover (#1261) ... for new created partitions	2021-05-03 11:34:33 +03:00
Aliaksandr Valialkin	e37e1b1e34	lib/{storage,mergeset}: fix unaligned 64-bit atomic operation panic for 32-bit architectures ... The panic has been introduced in 56b6b893ce	2021-04-27 16:42:19 +03:00
Aliaksandr Valialkin	2d1d60118d	lib/mergeset: split rows ingestion among multiple shards ... This improves rows ingestion on systems with many CPU cores by reducing lock contention. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1244 Thanks to @waldoweng for the original idea and draft implementation at https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1243	2021-04-27 15:45:11 +03:00
Aliaksandr Valialkin	cba2d13456	lib/storage: typo fix in info message when deleting the part outside the configured retention ... Previously the message was displaying incorrect retention time	2021-04-27 13:33:36 +03:00
Aliaksandr Valialkin	ab8008d6d7	lib/{storage,mergeset}: remove empty directories on startup. Such directories can be left after unclean shutdown on NFS storage ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1142	2021-04-22 13:03:29 +03:00
Aliaksandr Valialkin	b8a5ee2e93	lib/{mergeset,storage}: allow merging smaller number of small parts ... While this may increase CPU and disk IO usage needed for background merge, this also recudes CPU usage during queries in production. This is because such queries tend to read recently added data and it is better to have lower number of parts for such data in order to reduce CPU usage. This partially reverts ebf8da3730	2021-02-21 21:43:37 +02:00
Aliaksandr Valialkin	e8ee9fa7fe	app/vmstorage: export missing vm_cache_size_bytes metrics for indexdb and data caches	2021-02-09 00:49:58 +02:00
Aliaksandr Valialkin	d5a2b120e9	app/vmstorage: disable final merge by default, since it may result in high disk IO and CPU usage without measurable benefits such as increased query performance and reduced disk space usage	2021-01-08 00:12:12 +02:00
Aliaksandr Valialkin	ca8919e8e1	lib/storage: wait for pending transactions before closing and dropping the partition ... This deflakes `make test-full-386` test	2020-12-25 11:46:47 +02:00
Aliaksandr Valialkin	c0511144e3	lib/storage: physically remove stale parts ... Previously they were removed from partition struct, but the corresponding directories weren't removed. This is a follow-up for 46dba00756	2020-12-24 16:56:09 +02:00
Aliaksandr Valialkin	66f8fbbb32	lib/storage: do not remove parts outside the configured retention if they are currently merged ... These parts are automatically removed after the merge is complete.	2020-12-24 09:02:12 +02:00
Aliaksandr Valialkin	fa3bcf220f	lib/storage: remove stale parts as soon as they go outside the configured retention ... Previously such parts could remain undeleted for long durations until they are merged with other parts. This should help for `-retentionPeriod` values smaller than one month.	2020-12-22 19:55:07 +02:00
Aliaksandr Valialkin	6859737329	lib/storage: properly determine max rows for output part when merging small parts	2020-12-18 23:26:28 +02:00
Aliaksandr Valialkin	edbe35509e	lib/{storage,mergeset}: tune background merge process in order to reduce CPU usage and disk IO usage	2020-12-18 20:01:20 +02:00
Aliaksandr Valialkin	1a237c6903	all: properly handle CPU limits set on the host system/container ... This can reduce memory usage on systems with enabled CPU limits. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946	2020-12-08 21:07:03 +02:00
Aliaksandr Valialkin	c0bd208c77	lib/storage: do not report about the need of free disk space if parts cannot be merged due to too big write amplification	2020-11-03 15:32:09 +02:00
Aliaksandr Valialkin	0db7c2b500	app/vmstorage: support for -retentionPeriod smaller than one month ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/173 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/17	2020-10-20 14:42:46 +03:00
Aliaksandr Valialkin	b51fa16177	app/vmstorage: add -finalMergeDelay command-line flag for configuring the delay before final merge for per-month partitions after no new data is ingested to it	2020-10-07 17:42:31 +03:00
Aliaksandr Valialkin	7c2e4e267a	lib/storage: allow set values higher than 1 for vm_merge_need_free_disk_space if there are multiple partitions with deferred merges due to disk space shortage	2020-09-29 22:53:34 +03:00
Aliaksandr Valialkin	097a4c10dd	app/vmstorage: add metrics for determining whether background merges need additional disk space to complete ... These metrics are: * vm_small_merge_need_free_disk_space * vm_big_merge_need_free_disk_space Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/686	2020-09-29 21:47:47 +03:00
Aliaksandr Valialkin	a9321f6a60	lib/storage: reduce CPU load for idle VictoriaMetrics by reducing the frequency for the need for background merges	2020-09-21 15:51:26 +03:00
Aliaksandr Valialkin	d96858b921	lib/storage: add /internal/force_merge handler for running forced compactions on historical per-month partitions ... This may be useful for freeing up storage space after time series deletion. See https://victoriametrics.github.io/#force-merge for more details. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/686	2020-09-17 12:20:56 +03:00
Aliaksandr Valialkin	3abbb38254	lib/{mergeset,storage}: compare errors with errors.Is()	2020-09-17 03:03:10 +03:00
Aliaksandr Valialkin	ddb3519e17	lib/{mergeset,storage}: code prettifying	2020-09-17 02:06:37 +03:00
Aliaksandr Valialkin	bf826dd828	lib/storage: removed duplicate checks for empty parts during merge - another check is in the beginning of mergeParts functions	2020-09-17 01:49:08 +03:00
Aliaksandr Valialkin	3149af624d	lib/storage: reduce the maximum number of concurrent merge workers to GOMAXPROCS/2 ... Previously the limit has been raised to GOMAXPROCS, but it has been appeared that this increases query latencies since more CPUs are busy with merges. While at it, substitute `*MergeConcurrencyLimitCh` channels with simple integer limits.	2020-07-31 17:53:13 +03:00
Aliaksandr Valialkin	29bbab0ec9	lib/storage: remove prioritizing of merging small parts over merging big parts, since it doesn't work as expected ... The prioritizing could lead to big merge starvation, which could end up in too big number of parts that must be merged into big parts. Multiple big merges may be initiated after the migration from v1.39.0 or v1.39.1. It is OK - these merges should be finished soon, which should return CPU and disk IO usage to normal levels. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/648 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/618	2020-07-30 20:02:22 +03:00
Aliaksandr Valialkin	b8303afcd8	lib/storage: improve prioritizing of data ingestion over querying ... Prioritize also small merges over big merges. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/291 Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/648	2020-07-23 01:40:38 +03:00
Aliaksandr Valialkin	7d0743422b	lib/storage: properly calculate global metrics in UpdateStats()	2020-07-23 00:35:31 +03:00
Aliaksandr Valialkin	23fa44e56e	lib/storage: reorder mergeBlockStreams() args in order to make them more consistent	2020-07-22 21:58:25 +03:00
Aliaksandr Valialkin	d962568e93	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 23:33:46 +03:00
Tristan Su	c254b683fd	lib/storage: set big/small merge concurrency (#568) ... fixed #567 Co-authored-by: Tristan Su <suqing.sq@alibaba-inc.com>	2020-06-19 02:21:55 +03:00
Aliaksandr Valialkin	3d0a0b3785	lib/fs: optimize MustGetFreeSpace performance by caching the results for up to 2 seconds	2020-06-04 13:14:04 +03:00
Aliaksandr Valialkin	a72f18e821	lib/{storage,mergeset}: further tuning of compression levels depending on block size ... This should improve performance for querying newly added data, since it can be unpacked faster.	2020-05-15 13:12:28 +03:00
Aliaksandr Valialkin	3845420a8f	lib: extract common code for returning fast unix timestamp into lib/fasttime	2020-05-14 23:06:50 +03:00
Aliaksandr Valialkin	0b2f678d8e	lib/{storage,mergeset}: make sure that requests and misses cache counters never go down	2020-04-10 14:44:52 +03:00
Aliaksandr Valialkin	347aaba79d	lib/{storage,mergeset}: use time.Ticker instead of time.Timer where appropriate ... It has been appeared that time.Timer was used in places where time.Ticker must be used instead. This could result in blocked goroutines as in the https://github.com/VictoriaMetrics/VictoriaMetrics/issues/316 .	2020-02-13 13:21:48 +02:00