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Author SHA1 Message Date
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
903b2e710c
lib/storage: use deterministic random generator in tests 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3683
 2023-01-23 20:12:32 -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
12e2bcdf81
app/vmselect/promql: avoid memory allocations and copying from source timeseries to the returned result at timeseriesToResult() 2023-01-09 22:39:15 -08:00
Aliaksandr Valialkin
b7a4650ab0
all: use metricsql.CompileRegexp instead of regexp.Compile for compiling regexps used in graphite queries 
This should speed up repeated queries, since metricsql.CompileRegexp returns regexps from the cache
on subsequent calls for the same input regexp.
 2023-01-09 21:45:34 -08:00
Aliaksandr Valialkin
eb9a542c1f
lib/storage: simplify the fix from 488940502c 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3566
 2023-01-07 01:11:35 -08:00
Dmytro Kozlov
f739e44802
lib/storage: fix returning camelcase label names (#3608) 
* lib/storage: fix returning camelcase label names

* doc: add change log

* Update docs/CHANGELOG.md

* Update docs/CHANGELOG.md

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-01-07 01:11:10 -08:00
Aliaksandr Valialkin
b275983403
lib/writeconcurrencylimiter: improve the logic behind -maxConcurrentInserts limit 
Previously the -maxConcurrentInserts was limiting the number of established client connections,
which write data to VictoriaMetrics. Some of these connections could be idle.
Such connections do not consume big amounts of CPU and RAM, so there is a little sense in limiting
the number of such connections. So now the -maxConcurrentInserts command-line option
limits the number of concurrently executed insert requests, not including idle connections.

It is recommended removing -maxConcurrentInserts command-line option, since the default value
for this option should work good for most cases.
 2023-01-06 22:07:16 -08:00
Roman Khavronenko
57277ed6bc
vmstorage: add more context to the flock acquiring msg (#3584) 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3578

Signed-off-by: hagen1778 <roman@victoriametrics.com>

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2023-01-05 18:32:53 -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
1ff62629f4
lib/storage: clear the err if it is set to io.EOF when searching for the TSID by metricID 
This is expected error after when recently added indexdb data isn't available for search yet
or wasn't flushed to disk after unclean shutdown of VictoriaMetrics.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3515
 2022-12-20 14:05:53 -08:00
Aliaksandr Valialkin
2184de3bf2
lib/storage: do not check for the result returned by db.doExtDB() where this isn't necessary 
This simplifies the code a bit
 2022-12-19 13:23:30 -08:00
Aliaksandr Valialkin
11bd290201
lib/storage: search for TSIDs for the given metricIDs in the previous indexdb if they aren't found in the current indexdb 
The issue triggers after the indexdb rotation for time series, which stop receiving new samples.
This results in missing data for such time series in query responses.

This commit should address the https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3502

The issue has been introduced in 2dd93449d8
 2022-12-19 11:56:49 -08:00
Aliaksandr Valialkin
8c08d625ee
lib/storage: optimize partSearch.searchBHS() for common case when the TSID for the current block header is bigger or equal to the current tsid 
This should help improving performance at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3425
 2022-12-19 10:31:39 -08:00
Aliaksandr Valialkin
512c73cef9
lib/storage: properly set buf capacity inside marshalMetricID 
Previously it was always set to 0. In theory this could result into incorrect marshaling
of metricIDs.

The issue has been introduced in 5e4dfe50c6
 2022-12-19 10:31:38 -08:00
Aliaksandr Valialkin
fbeebe4869
lib/storage: skip missing tsids in the current block header by using binary search 
This improves performance by up to 10x when big number of the requested TSIDs
are missing in the searched parts.

This should help https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3425
 2022-12-14 22:07:55 -08:00
Aliaksandr Valialkin
1a88fe5b1f
lib/flagutil/bytes.go: properly handle values bigger than 2GiB on 32-bit architectures 
This fixes handling of values bigger than 2GiB for the following command-line flags:

- -storage.minFreeDiskSpaceBytes
- -remoteWrite.maxDiskUsagePerURL
 2022-12-14 19:29:57 -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
e56d5e1918
lib/storage: follow-up after 7c0ae3a86a 
- Update docs at https://docs.victoriametrics.com/#deduplication
- Optimize the deduplication loop a bit

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3333
 2022-12-08 18:18:49 -08:00
Roman Khavronenko
909cd04c55
lib/storage: keep sample with the biggest value on timestamp conflict (#3421) 
The change leaves raw sample with the biggest value for identical
timestamps per each `-dedup.minScrapeInterval` discrete interval
when the deduplication is enabled.

```
benchstat old.txt new.txt
name                                         old time/op    new time/op    delta
DeduplicateSamples/minScrapeInterval=1s-10      817ns ± 2%     832ns ± 3%      ~     (p=0.052 n=10+10)
DeduplicateSamples/minScrapeInterval=2s-10     1.56µs ± 1%    2.12µs ± 0%   +35.19%  (p=0.000 n=9+7)
DeduplicateSamples/minScrapeInterval=5s-10     1.32µs ± 3%    1.65µs ± 2%   +25.57%  (p=0.000 n=10+10)
DeduplicateSamples/minScrapeInterval=10s-10    1.13µs ± 2%    1.50µs ± 1%   +32.85%  (p=0.000 n=10+10)

name                                         old speed      new speed      delta
DeduplicateSamples/minScrapeInterval=1s-10   10.0GB/s ± 2%   9.9GB/s ± 3%      ~     (p=0.052 n=10+10)
DeduplicateSamples/minScrapeInterval=2s-10   5.24GB/s ± 1%  3.87GB/s ± 0%   -26.03%  (p=0.000 n=9+7)
DeduplicateSamples/minScrapeInterval=5s-10   6.22GB/s ± 3%  4.96GB/s ± 2%   -20.37%  (p=0.000 n=10+10)
DeduplicateSamples/minScrapeInterval=10s-10  7.28GB/s ± 2%  5.48GB/s ± 1%   -24.74%  (p=0.000 n=10+10)
```

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3333
Signed-off-by: hagen1778 <roman@victoriametrics.com>

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2022-12-08 18:18:36 -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
a13d21513e
lib/mergeset: panic when too long item is passed to Table.AddItems() 2022-12-03 23:37:20 -08:00
Aliaksandr Valialkin
dccd70ce10
lib/storage: remove duplicate logging for filepath on errors 2022-12-03 23:15:28 -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
106332cd9f
lib/storage: properly pass retentionMsecs to OpenStorage() at TestIndexDBRepopulateAfterRotation 2022-12-03 23:03:30 -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
7ffa66d249
lib/{mergeset,storage}: take into account byte slice capacity when returning the size of in-memory part 
This results in more correct reporting of memory usage for in-memory parts
 2022-12-03 22:31:34 -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
233301a549
lib/storage: optimization: do not scan block for rows outside retention if it is covered by the retention 2022-12-03 22:14:20 -08:00
Aliaksandr Valialkin
fd9d0a550b
lib/storage: remove logging redundant path values in a single error message 2022-12-03 22:14:19 -08:00
Aliaksandr Valialkin
8e9822bc7f
lib/storage: speed up search for data block for the given tsids 
Use binary search instead of linear scan for looking up the needed
data block inside index block.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3425
 2022-12-03 20:59:59 -08:00
Aliaksandr Valialkin
d8303845ef
lib/storage: fix TestUpdateCurrHourMetricIDs test when it runs on the first hour of the day by UTC 2022-12-02 17:23:59 -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
匠心零度
d4808d5b84
lib/storage: remove extra error check (#3396) 2022-11-28 17:07:11 +01:00
Zakhar Bessarab
e407e7243a
{app/vmstorage,app/vmselect}: add API to get list of existing tenants (#3348) 
* {app/vmstorage,app/vmselect}: add API to get list of existing tenants

* {app/vmstorage,app/vmselect}: add API to get list of existing tenants

* app/vmselect: fix error message

* {app/vmstorage,app/vmselect}: fix error messages

* app/vmselect: change log level for error handling

* wip

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2022-11-25 10:32:45 -08:00
Aliaksandr Valialkin
d3035b1ca1
lib/storage: follow-up for 790768f20b 
- Document the bugfix at docs/CHANGELOG.md
- Simplify the bugfix a bit
 2022-11-07 14:18:06 +02:00
Aliaksandr Valialkin
be78950011
lib/storage: typo fix after 32d48f8dfbb03174858c00bdfe6d9d22431dc8d8 2022-11-07 13:58:13 +02:00
Aliaksandr Valialkin
99e6a937a5
lib/storage: remove unused isFull field from hourMetricIDs struct 2022-11-07 13:15:59 +02:00
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