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a6a4beb89a
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476 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
a6a4beb89a
app/vmselect: remove data race on updating EvalConfig.IsPartialResponse from concurrently running goroutines 
This properly returns `is_partial: true` for partial responses.
 2023-03-12 16:53:03 -07:00
Aliaksandr Valialkin
5cd60c54d3
app/vmselect/promql: prevent from SIGBUS crash on architecures, which deny unaligned access to 8-byte words (e.g. ARM) 
Thanks to @oliverpool for nailing down the root cause of the issue and for the initial attempt to fix it
at https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3927
 2023-03-12 16:29:18 -07:00
Aliaksandr Valialkin
d3605ad072
app/vmselect/promql: fix panic when calculating aggr_func(rollup*()) 
The panic has been introduced in dac21d874b
 2023-02-27 11:48:38 -08:00
Aliaksandr Valialkin
18dd0d1dbf
.golangci.yml: properly enable revive linter and fix all the warnings it detects 2023-02-26 12:19:58 -08:00
Roman Khavronenko
66d0b45651
vmselect/promql: check for deadline in count_values fn (#3806) 
* vmselect/promql: check for deadline in `count_values` fn

`count_values` could be very slow during the data processing.
Checking for deadline between iterations supposed to reduce
probability of exceeding `search.maxQueryDuration`.

The change also adds a new trace record, which captures the time
spent in aggregation function. Before that, the trace for aggr funcs
could be confusing since it doesn't account for all the places where
time was spent.

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

* wip

---------

Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-02-24 17:10:38 -08:00
Roman Khavronenko
79eb33556e
metricsql: support optional 2nd argument for rollup functions (#3841) 
* metricsql: support optional 2nd argument for rollup functions

Support optional 2nd argument `min`, `max` or `avg` for rollup functions:
 * rollup
 * rollup_delta
 * rollup_deriv
 * rollup_increase
 * rollup_rate
 * rollup_scrape_interval

 If second argument is passed, then rollup function will return only the selected aggregation type.
 This change can be useful for situations where only one type of rollup calculation is needed.
 For example, `rollup_rate(requests_total[5m], "max")`.

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

* wip

---------

Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-02-24 13:48:30 -08:00
Aliaksandr Valialkin
8efa9159cf
app/vmselect/promql: measure the time required for calculating the aggregate function from the prepared source time series 2023-02-23 20:06:02 -08:00
Aliaksandr Valialkin
6369c88a68
app/vmselect: add -search.logQueryMemoryUsage command-line flag for logging queries, which take big amounts of memory 
Thanks to @michal-kralik for initial attempts for this feature:

- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3651
- https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3715

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3553
 2023-02-23 18:52:44 -08:00
Alexander Marshalov
9bb9bd266b
fix interpolate function for filling only intermediate gaps (#3816) (#3857) 
* fix interpolate function for filling only intermediate gaps (#3816)

* Update docs/CHANGELOG.md

---------

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-02-22 18:41:29 -08:00
Aliaksandr Valialkin
a15da5ff73
app/vmselect/promql: add share(q) aggregate function for normalizing results across multiple time series in [0..1] value range per each timestamp and aggregation group 2023-02-18 22:43:54 -08:00
Aliaksandr Valialkin
84b5532bc1
app/vmselect/promql: add range_zscore(q) and range_trim_zscore(z, q) functions 
These functions may be useful for dropping outliers at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3759
 2023-02-18 22:43:53 -08:00
Aliaksandr Valialkin
450b6f6d39
app/vmselect/promql: add range_mad(q) and range_trim_outliers(k, q) functions 
These functions may help trimming outliers during query time
for the use case described at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3759
 2023-02-18 15:18:47 -08:00
Oleksandr Redko
0e1c395609
app,lib: fix typos in comments (#3804) 2023-02-13 09:32:35 -08:00
Aliaksandr Valialkin
db7f237da9
app/vmselect/promql: add mad_over_time(m[d]) function 
See https://github.com/prometheus/prometheus/issues/5514
 2023-02-11 01:06:39 -08:00
Aliaksandr Valialkin
6ff15ca135
app/vmselect: use consistent randomizer in tests 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3683
 2023-01-23 19:27:40 -08:00
Aliaksandr Valialkin
e01f52d517
app/vmselect/promql: updates tests for https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3664 2023-01-17 23:26:06 -08:00
Aliaksandr Valialkin
ce47faf102
app/vmselect/promql: reduce memory allocations when searching for time series pairs with identical labelsets in q1 op q2 queries 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3641
 2023-01-15 13:00:28 -08:00
Aliaksandr Valialkin
fe8802bbc8
app/vmselect/promql: reduce the number of memory allocations inside getCommonLabelFilters() 
This should improve performance a bit for `q1 op q2` queries
 2023-01-15 12:56:21 -08:00
Aliaksandr Valialkin
d33a65e401
app/vmselect/promql: reduce memory allocations at getCommonLabelFilters() function 
Intern tag keys and values there
 2023-01-12 01:27:34 -08:00
Aliaksandr Valialkin
8a35377cf3
app/vmselect/promql: move the eval function args in parallel query trace outside the loop 2023-01-10 22:23:43 -08:00
Aliaksandr Valialkin
c8bd3534cb
app/vmselect/promql: eliminate memory allocation when sorting values inside float64s 2023-01-09 23:06:57 -08:00
Aliaksandr Valialkin
7956b0d974
app/vmselect/promql: pre-allocate memory for values to be merged in mergeTimeseries() 
This should reduce the number of memory re-allocations
 2023-01-09 22:52:19 -08:00
Aliaksandr Valialkin
895d5d9d22
app/vmselect/promql: consistently intern series names obtained from marshalMetricNameSorted 
This reduces memory allocations when the returned series names are used as map keys later
 2023-01-09 22:46:30 -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
dd92e2050f
app/vmselect/promql: remove memory allocations from sortMetricTags() 2023-01-09 22:22:58 -08:00
Aliaksandr Valialkin
8050f5a18c
app/vmselect/promql: intern output series names inside timeseriesToResult() 
This reduces the number of memory allocations for repeated queries,
which return (almost) the same set of time series.
 2023-01-09 22:20:34 -08:00
Aliaksandr Valialkin
efb3c630fe
app/vmselect/promql: intern output series names during normal aggregation 2023-01-09 22:15:31 -08:00
Aliaksandr Valialkin
c0de651558
app/vmselect/promql: intern output series names during incremental aggregation 
This should reduce the number of memory allocations for repeated queries
 2023-01-09 22:12:05 -08:00
Aliaksandr Valialkin
78114e85d6
vendor: update github.com/VictoriaMetrics/metricsql from v0.50.0 to v0.51.0 
Updates https://github.com/VictoriaMetrics/metricsql/pull/7
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3589
 2023-01-05 01:50:26 -08:00
Aliaksandr Valialkin
507e719c3f
app/vmselect/promql: add tests for d3de110070 2022-12-21 20:25:37 -08:00
Aliaksandr Valialkin
a77bb09e69
app/vmselect/promql: make sure that label_replace() doesn't create an empty dst_label if the src_label doesn't match regex 2022-12-21 20:25:37 -08:00
Aliaksandr Valialkin
7fb314bb59
app/vmselect/promql: do not extend too short lookbehind window for rate() function if it is set explicitly 
Previously too short lookbehind window d for rate(m[d]) could be automatically extended
if it didn't cover at least two raw samples. This was needed in order to guarantee
non-empty results from rate(m[d]) on short time ranges.

Now the lookbehind window isn't extended if it is set explicitly,
since it is expected that the user knows what he is doing.

The lookbehind window continues to be extended when needed if it isn't set explicitly.
For example, in the case of rate(m).

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3483
 2022-12-20 00:18:32 -08:00
Aliaksandr Valialkin
808ce815e4
app/vmselect/promql: allow passing inf arg into functions, which accept numeric limit on the number of output time series 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3461
 2022-12-10 22:48:01 -08:00
Aliaksandr Valialkin
c902500efc
app/vmselect/promql: add range_trim_spikes(phi, q) function for trimming phi percent of largest spikes per each time series returned by q 2022-12-05 21:55:24 -08:00
Aliaksandr Valialkin
ad548abd6a
app/vmselect/promql: add range_normalize(q1, ..., qN) function for normalizing query results into [0..1] value range 
This may be useful for analyzing correlation between time series with different value ranges
 2022-11-21 23:25:35 +02:00
Aliaksandr Valialkin
2d361a834d
app/vmselect/promql: properly return an empty result from limit_offset() if offset exceeds the number of inner time series 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3312
 2022-11-21 16:48:10 +02:00
Aliaksandr Valialkin
b0fefe562a
app/vmselect/promql: optimize e1 op e2 when e1 returns an empty result 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3349
 2022-11-21 16:09:49 +02:00
Aliaksandr Valialkin
0cc59b9f95
app/vmselect/promql: add range_stdvar() and range_stddev() functions for calculating variance and deviation over time series on the selected time range 2022-11-17 01:03:02 +02:00
Aliaksandr Valialkin
facf7efa3a
app/vmselect/promql: add range_linear_regression(q) function for calculating simple linear regression for the selected time series on the selected time range 2022-11-17 00:39:17 +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
c92aef39b5
app/vmselect/promql: expose missing metric vm_cache_size_max_bytes{type="promql/rollupResult"} 2022-10-23 12:14:07 +03:00
Aliaksandr Valialkin
9bf8d64605
app/vmselect/promql: follow-up for 930f1ee153 
Document the change at docs/CHANGELOG.md
Apply it to histogram_quantile() in the same way as to histogram_share()

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/3225
 2022-10-13 12:06:24 +03:00
Siqi Liu
c0fc716426
BUGFIX: properly calculate histogram_quantile with the same value and different string le (#3225) 
Co-authored-by: 647(siki.liu) <siki.liu@huolala.cn>
 2022-10-13 12:06:24 +03:00
Aliaksandr Valialkin
a0f3247b14
app/vmselect/promql: properly handle zero and negative values for -search.maxMemoryPerQuery 
This is a follow-up for 04a05f161c

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3203
 2022-10-12 09:33:16 +03:00
Aliaksandr Valialkin
098c9bda27
app/vmselect: return back the logic for limits the amounts of memory occupied by concurrently executed queries if -search.maxMemoryPerQuery isn't set 
This is needed for preserving backwards compatibility with the previous releases of VictoriaMetrics.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3203
 2022-10-10 21:54:18 +03:00
Aliaksandr Valialkin
938ff7bba6
app/vmselect: allow limiting per-query memory usage via -search.maxMemoryPerQuery command-line flag 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3203
 2022-10-08 01:14:01 +03:00
Aliaksandr Valialkin
b05ff477c8
app/vmselect/promql: properly calculate vm_rows_scanned_per_query histogram for rollup functions, which take into account only a few samples on the provided lookbehind window 2022-10-06 23:23:17 +03:00
Aliaksandr Valialkin
baa11a778d
app/vmselect/promql: properly calculate quantiles_over_time() over a single raw sample 2022-10-06 22:37:38 +03:00
Aliaksandr Valialkin
5497997b72
app/vmselect/promql: increase scalability of incremental aggregate calculations on systems with many CPU cores 
Use sync.Map instead of a global mutex there. This should lift scalability limits
on systems with many CPU cores.
 2022-10-01 20:14:14 +03:00
Aliaksandr Valialkin
98175493d7
app/vmselect/promql: remove empty series before applying aggregate function 
Previously empty series (e.g. series with all NaN samples) were passed to aggregate functions.
Such series must be ingored by all the aggregate functions.
So it is better from consistency PoV filtering out empty series before applying aggregate functions.
 2022-09-30 08:44:06 +03:00