Aliaksandr Valialkin
cc7d499bbd
app/vmselect/promql: execute q1 and q2 from q1 op q2 in parallel if labels pushdown cannot be applied
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This should improve query performance if VictoriaMetrics has enough resources for processing `q1` and `q2` in parallel.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2886
2022-07-19 14:27:48 +03:00
Aliaksandr Valialkin
c2197ad139
app/vmselect/promql: validate function name before evaluating its arguments
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This avoids unneeded evaluation of args for unknown functions
2022-07-12 19:48:26 +03:00
Aliaksandr Valialkin
3e2dd85f7d
all: readability improvements for query traces
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- show dates in human-readable format, e.g. 2022-05-07, instead of a numeric value
- limit the maximum length of queries and filters shown in trace messages
2022-06-30 18:20:33 +03:00
Aliaksandr Valialkin
a14188dd8e
app/vmselect: expose additional histograms at /metrics page, which may help get more insights for the query workload
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This commit is based on https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2792
2022-06-28 20:18:13 +03:00
Aliaksandr Valialkin
a43f2d0bc5
app/vmselect/promql: show the number of scanned samples in the query trace
2022-06-28 19:26:17 +03:00
Aliaksandr Valialkin
e578549b8a
app/vmselect: optimize /api/v1/series a bit for time ranges smaller than one day
2022-06-28 13:02:47 +03:00
Aliaksandr Valialkin
a963b2a0aa
all: show timeRange in traces in human-readable format instead of timestamps in milliseconds
2022-06-27 13:45:51 +03:00
Aliaksandr Valialkin
12ac255dae
lib/querytracer: make it easier to use by passing trace context message to New and NewChild
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The context message can be extended by calling Donef.
If there is no need to extend the message, then just call Done.
2022-06-08 21:06:52 +03:00
Aliaksandr Valialkin
41958ed5dd
all: add initial support for query tracing
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See https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html#query-tracing
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1403
2022-06-01 02:29:23 +03:00
Aliaksandr Valialkin
6e364e19ef
app/vmselect: add fine-grained limits for the number of returned/scanned time series for various APIs
2022-03-26 11:29:49 +02:00
Aliaksandr Valialkin
0d47c23a03
app/vmselect/promql: reduce the maximum number of label values, which can be propagated from one side of the binary operation to another side of the binary operation from 10K to 1K
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There are user reports that 10K unique values in a single label filter may lead to performance and memory usage issues
2022-02-24 04:05:18 +02:00
Aliaksandr Valialkin
b1f94f7f0e
app/vmselect/promql: return at most one time series from absent_over_time() in the same way as Prometheus does
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2130
2022-02-12 15:45:09 +02:00
Aliaksandr Valialkin
96b7de6736
app/vmselect/promql: clarify comments on why the right side of if and and operators are executed at first
2022-02-03 00:26:14 +02:00
Aliaksandr Valialkin
4b850c2a59
app/vmselect/promql: do not push down filters, which enumerate more than 10k unique values
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Such filters may slow down time series search, so just skip them.
This is a follow-up for e7f1ceeb84https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1827
2022-02-02 23:40:02 +02:00
Aliaksandr Valialkin
2016a2c899
app/vmselect/promql: properly handle foo or bar queries
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Such queries may miss `bar` results after the commit e7f1ceeb84
2022-02-01 17:40:51 +02:00
Aliaksandr Valialkin
a8d22e1223
app/vmselect/promql: check for binary operation in case-insensitive manner when deciding which side of the operation to perform the first
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PromQL and MetricsQL operators are case-insensitive
2022-01-31 22:06:15 +02:00
Aliaksandr Valialkin
e7f1ceeb84
app/vmselect/promql: optimize queries, which join on _info metrics.
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Automatically add common filters from one side of binary operation
to the other side before sending the query to storage subsystem.
See https://grafana.com/blog/2021/08/04/how-to-use-promql-joins-for-more-effective-queries-of-prometheus-metrics-at-scale/
and https://www.robustperception.io/exposing-the-software-version-to-prometheus
2022-01-31 19:32:36 +02:00
Aliaksandr Valialkin
dc7b63a793
app/vmselect/promql: properly keep metric names when optimized path is used for aggregate function calculations
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For example, `sum(rate(...) keep_metric_names) by (__name__)` didn't leave the original metric name because of this issue.
This is a follup-up for 1bdc71d917https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949
2022-01-17 15:30:30 +02:00
Aliaksandr Valialkin
1bdc71d917
app/vmselect/promql: implement keep_metric_names modifier for transform and rollup functions
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949
2022-01-14 04:14:59 +02:00
Aliaksandr Valialkin
f41846d002
app/vmselect/promql: add stale_samples_over_time() function
2022-01-14 01:48:04 +02:00
Aliaksandr Valialkin
c883c15878
app/vmselect/promql: add support for @ modifier
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Add support for `@` modifier in MetricsQL according to https://prometheus.io/docs/prometheus/latest/querying/basics/#modifier
Extend the support with the following features:
* Allow using `@` modifier everywhere in the query. For example, `sum(foo) @ end()`
* Allow using arbitrary expression as `@` modifier. For example, `foo @ (end() - 1h)`
returns `foo` value at `end - 1 hour` timestamp on the selected time range `[start ... end]`
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1348
2022-01-13 22:12:06 +02:00
Aliaksandr Valialkin
ff15a752c1
app/vmselect: accept optional extra_filters[] query args for all the supported Prometheus querying APIs
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1863
2021-12-06 17:07:09 +02:00
Michael Fuller
cf8c171f85
vmselect: in promql evaluation, return bytes requested when rollup memory limiter is unable to satisfy the request ( #1838 )
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Co-authored-by: Michael Fuller <mfuller@digitalocean.com>
2021-11-22 13:20:42 +03:00
Aliaksandr Valialkin
9a3d0c43b5
app/vmselect/promql: add quantiles_over_time("phiLabel", phi1, ..., phiN, m[d]) function for calculating multiple quantiles at once
2021-09-17 23:35:10 +03:00
Aliaksandr Valialkin
cdc372bb98
app/vmselect: add -search.noStaleMarkers command-line flag for disabling stale markers handling in queries
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This option allows reducing CPU usage a bit when VictoriaMetrics is used
for collecting and processing non-Prometheus data. For example, InfluxDB line protocol, Graphite, OpenTSDB, CSV, etc.
2021-08-18 13:59:02 +03:00
Aliaksandr Valialkin
bd14b0887e
app/vmselect/promql: move common condition to dropStaleNaNs in order to improve code maintainability
2021-08-17 11:01:16 +03:00
Aliaksandr Valialkin
113f0a8a07
app/vmselect/promql: drop staleness marks before calling rollupConfig.Do
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This allows dropping staleness marks only once and then calculate multiple rollup functions on the result.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1526
2021-08-15 13:21:10 +03:00
Aliaksandr Valialkin
a925d5a3e1
app/vmselect/promql: duration handling improvements in MetricsQL queries
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- Support durations anywhere in MetricsQL queries. E.g. sum_over_time(m[1h])/1h is equivalent to sum_over_time(m[1h])/3600
- Support durations without suffix. E.g. rate(m[300]) is equivalent to rate(m[5m])
2021-07-12 17:16:41 +03:00
Aliaksandr Valialkin
71b72304ae
app/vmselect: improve description for -search.maxPointsPerTimeseries command-line flag
2021-03-22 16:45:34 +02:00
Aliaksandr Valialkin
2dae0a2c47
app/vmselect: add round_digits query arg to /api/v1/query and /api/v1/query_range handlers for limiting the number of decimal digits after the point
2021-03-15 12:36:33 +02:00
Aliaksandr Valialkin
2d33230793
app/vmselect/promql: properly make copies of EvalConfig
2021-02-11 12:41:15 +02:00
Aliaksandr Valialkin
7a3a9421f3
app/vmselect/promql: make a copy of EvalConfig when executing q1 and q2 in parallel for q1 binary_op q2
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This should prevent from data races if the underlying functions modify EvalConfig contents.
2021-02-10 23:05:55 +02:00
Aliaksandr Valialkin
04faea8b45
app/vmselect: parallelize q1 <binary_op> q2 queries by running q1 and q2 in parallel
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This should reduce query execution times.
2021-02-10 22:59:39 +02:00
Aliaksandr Valialkin
b43b498fd8
app/vmselect: add ability to pass extra_label=<label>=<value> query arg to Prometheus Querying API
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This enforced `{label="value"}` label filter to the query.
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1021
2021-02-01 18:04:17 +02:00
Aliaksandr Valialkin
c164a8d231
app/vmselect/promql: improve documentation for -search.maxPointsPertimeseries command-line flag
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This should reduce incorrect usage and assumptions for this flag.
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1020
2021-01-22 13:00:10 +02:00
Aliaksandr Valialkin
c86286ec1d
app/vmselect/promql: do not ajdust offset value provided in the query
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Previously it could be modified in order to improve response cache hit ratio.
This is unneeded, since cache hit ratio should remain good because the query time range
should be already aligned to multiple of `step` values.
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/976
2020-12-27 14:09:25 +02:00
Aliaksandr Valialkin
4146fc4668
all: properly handle CPU limits set on the host system/container
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This can reduce memory usage on systems with enabled CPU limits.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946
2020-12-08 21:07:29 +02:00
Aliaksandr Valialkin
266788be14
app/vmselect: use storage.NewSearchQuery() instead of constructing storage.SearchQuery in-place
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This should prevent from bugs when AccountID and ProjectID aren't set in storage.SearchQuery.
2020-11-16 18:24:00 +02:00
Aliaksandr Valialkin
1b3efccb24
app/vmselect: stop /api/v1/export/* execution if client disconnects
2020-09-27 23:53:13 +03:00
Aliaksandr Valialkin
f0005c3007
app/vmselect: move Deadline from netstorage to searchutils
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This removes dependency on netstorage from searchutils.
2020-09-11 13:27:13 +03:00
Aliaksandr Valialkin
c0343a661b
app/vmselect/promql: increase floating point calculations accuracy by dividing by 1e3 instead of multiplying by 1e-3
2020-09-08 14:00:47 +03:00
Aliaksandr Valialkin
e706e59d49
app/vmselect: unconditionally align time range boundaries to step for subqueries as Prometheus does
2020-09-03 13:29:50 +03:00
Aliaksandr Valialkin
509d12643b
app/vmselect: show X-Forwarded-For contents on /api/v1/status/active_queries page
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/659
2020-07-31 20:05:18 +03:00
Aliaksandr Valialkin
f0c678c41b
app/vmselect: do not adjust start and end query args passed to /api/v1/query_range when -search.disableCache command-line flag is set
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/563
2020-07-30 23:14:37 +03:00
Aliaksandr Valialkin
79c30cf4cb
app/vmselect: show query origin (aka remote_addr or client address) on the /api/v1/status/active_queries page for every query
2020-07-28 15:13:08 +03:00
Aliaksandr Valialkin
b9c8f6bf34
app/vmselect: log the total available memory for concurrent requests on not enough memory errors
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This should simplify root cause analysis
2020-07-20 19:51:40 +03:00
Aliaksandr Valialkin
d5dddb0953
all: use %w instead of %s for wrapping errors in fmt.Errorf
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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
574289c3fb
app/vmselect/promql: support for sum(x) by (y) limit N syntax in order to limit the number of output time series after aggregation
2020-05-12 19:45:54 +03:00
Aliaksandr Valialkin
57407cca83
app/vmselect/promql: remove -search.maxPointsPerTimeseries command-line flag
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Limit the estimated time series count after aggregation with grouping by the number of source time series.
2020-04-29 00:20:04 +03:00
Aliaksandr Valialkin
4e4f57b121
lib/metricsql: move it to a separate repository - github.com/VictoriaMetrics/metrics
2020-04-28 15:28:22 +03:00
