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185 commits

Author SHA1 Message Date
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
Aliaksandr Valialkin
ea53a21b02 all: consistently log durations in seconds with millisecond precision 
This should improve logs readability
 2020-01-22 18:35:24 +02:00
Aliaksandr Valialkin
53e176ed67 lib/storage: limit maxRaRowsPerPartition by 500K for any number of rawRowsShardsPerPartition 
This should reduce write amplification for high ingestion rate on multi-CPU systems
 2020-01-04 23:58:23 +02:00
Aliaksandr Valialkin
a37a006f11 lib/storage: scale ingestion performance by sharding rawRows on systems with more than 8 CPU cores 2019-12-19 18:17:05 +02:00
Aliaksandr Valialkin
3694efd005 lib/{mergeset,storage}: log info message when both source and destination part paths from txn are missing during startup 
This is expected condition after unclean shutdown (OOM, hard reset, `kill -9`) on NFS disk.
 2019-12-09 15:45:23 +02:00
Aliaksandr Valialkin
639967db59 lib/{mergeset,storage}: make sure pending transaction deletions are finished before and after runTransactions call. 
`runTransactions` call issues async deletions for transaction files. The previously issued transaction deletions
can race with the next call to `runTransactions`. Prevent this by waiting until all the pending transaction
deletions are funished in the beginning of `runTransactions`. Also make sure that all the pending transaction
deletions are finished before returning from `runTransactions`.
 2019-12-04 21:40:52 +02:00
Aliaksandr Valialkin
b9616c017f lib/{mergeset,storage}: remove transaction files only after the mentioned dirs are really removed 
This should fix the issue on NFS when incompletely removed dirs may be left
after unclean shutdown (OOM, kill -9, hard reset, etc.), while the corresponding transaction
files are already removed.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/162
 2019-12-02 21:34:37 +02:00
Aliaksandr Valialkin
a10c4cad85 lib/storage: return back finalPartsToMerge from 2 to 3 in order to prevent from excessive merges in old partitions 2019-11-05 17:28:57 +02:00
Aliaksandr Valialkin
26ffc77622 lib/{storage,mergeset}: create missing partition directories after restoring from backups 
Backup tools could skip empty directories. So re-create such directories on the first run.
 2019-11-02 02:27:19 +02:00
Aliaksandr Valialkin
6ab9c98a1e app/vmstorage: add -bigMergeConcurrency and -smallMergeConcurrency flags for tuning the maximum number of CPU cores used during merges 2019-10-31 16:17:29 +02:00
Aliaksandr Valialkin
a27e034a40 lib/storage: get parts to merge after applying the limit on the number of concurrent merges 
This should reduce write amplification under high ingestion rate.
 2019-10-30 00:09:44 +02:00
Aliaksandr Valialkin
5d2276dbf7 lib/{mergeset,storage}: limit the maximum number of concurrent merges; leave smaller number of parts during final merge 2019-10-29 12:45:37 +02:00
Aliaksandr Valialkin
78fc35c9b1 all: make fmt 2019-10-17 20:05:12 +03:00
Aliaksandr Valialkin
5b01b7fb01 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 18:27:49 +03:00
Aliaksandr Valialkin
7f4a04ee6a lib/storage: typo fix in comment to maxRowsPerSmallPart. 2019-10-08 18:51:56 +03:00
Aliaksandr Valialkin
de0e4eee2c 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 21:18:04 +03:00
Aliaksandr Valialkin
7d13c31566 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 22:06:23 +03:00
Aliaksandr Valialkin
568ff61dcf lib/mergeset: dynamically calculate the maximum number of items per part, which can be cached in OS page cache 2019-09-09 11:42:45 +03:00
Aliaksandr Valialkin
604a4312f9 all: port to FreeBSD on GOARCH=amd64 2019-08-28 01:46:09 +03:00
Aliaksandr Valialkin
0a8dd9cc9a lib/storage: calculate the maximum number of rows per small part from -memory.allowedPercent 
This should improve query speed over recent data on machines with big amounts of RAM
 2019-08-25 14:41:32 +03:00
Aliaksandr Valialkin
bc576fb386 lib/storage: properly limit the number of output rows in small and big parts storage 
Previously small parts storage didn't take into account the available disk space for big parts.
 2019-08-25 14:41:32 +03:00
Aliaksandr Valialkin
947decb3dd lib/storage: remove outdated comment on maxRowsPerSmallPart 
The commend became outdated after the commit ed6ac1a5df027f0dfc22448e3b27c26b6f77c67a,
which stops merging of small parts on graceful shutdown instead of waiting
for their completion.
 2019-08-25 13:46:10 +03:00
Aliaksandr Valialkin
73f866d874 lib/fs: atomically create file with the given contents on WriteFileAtomically 
This should prevent from `transaction` and `metadata.json` files corruption
on unclean shutdown such as OOM, `kill -9`, power loss, etc.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/148
 2019-08-12 15:02:04 +03:00
Aliaksandr Valialkin
41f512af1c all: add vm_data_size_bytes metrics for easy monitoring of on-disk data size and on-disk inverted index size 2019-07-04 19:43:04 +03:00
Aliaksandr Valialkin
18d6f293f7 lib/fs: consolidate *RemoveAll* funcs into a single MustRemoveAll func 
The func syncs parent dir in order to persist directory removal
in the event of power loss
 2019-06-12 01:55:18 +03:00
Aliaksandr Valialkin
51e2e255a6 lib/fs: consistency renaming SyncPath -> MustSyncPath, since it doesnt return error 2019-06-11 23:13:45 +03:00
Aliaksandr Valialkin
3437c30180 all: try hard removing directory with contents 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
 2019-06-11 01:58:08 +03:00
Aliaksandr Valialkin
bdf696ef18 all: fix misspellings 2019-05-25 21:51:24 +03:00
Aliaksandr Valialkin
1836c415e6 all: open-sourcing single-node version 2019-05-23 00:18:06 +03:00