Aliaksandr Valialkin
36a1ac8360
app/vmselect: take into account the time the requests wait in the queue if -search.maxConcurrentRequests is exceeded
...
This will prevent from excess CPU usage for timed out queries.
2020-02-04 16:15:08 +02:00
Aliaksandr Valialkin
834051e5b2
app/vmselect: add a placeholder for /api/v1/metadata, which could be requested by Grafana
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See https://prometheus.io/docs/prometheus/latest/querying/api/#querying-metric-metadata
VictoriaMetrics doesn't collect any metadata for metrics, so just return empty response.
2020-02-04 15:53:47 +02:00
Aliaksandr Valialkin
42864bb52f
all: do not clash flag description with back-quoted flag types
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See https://golang.org/pkg/flag/#PrintDefaults for more details.
2020-02-04 15:46:52 +02:00
Aliaksandr Valialkin
9773022e50
app/vmselect: mention the original query and time range in error messages
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This should simplify debugging invalid or heavy queries.
2020-01-22 17:36:36 +02:00
Aliaksandr Valialkin
d0d258b314
app/vmselect: limit the default value for -search.maxConcurrentRequests, so it plays well on systems with more than 16 vCPUs
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A single heavy request can saturate all the available CPUs, so let's limit the number of concurrent requests to lower value.
This will give more chances for executing insert path.
2020-01-17 15:43:54 +02:00
Aliaksandr Valialkin
d88725f133
app/{vminsert,vmselect}: improve error messages when VictoriaMetrics cannot handle too high number of concurrent inserts / selects
2020-01-17 13:24:37 +02:00
Aliaksandr Valialkin
face3d57bf
app/vmselect: add placeholders for /api/v1/rules and /api/v1/alerts
2019-12-03 19:36:33 +02:00
Aliaksandr Valialkin
ac004665b5
all: return 503 http error if service is temporarily unavailable
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/156
2019-08-23 09:55:07 +03:00
Aliaksandr Valialkin
5c83f8e203
app: add vm_concurrent_ metrics for visibility in concurrency limiters for vminsert and vmselect
2019-08-05 18:30:57 +03:00
Aliaksandr Valialkin
cbe692f0e2
app/vmselect: add /api/v1/labels/count handler for quick detection of labels with the maximum number of distinct values
2019-06-10 19:55:38 +03:00
Aliaksandr Valialkin
e307a4d92c
lib/timerpool: use timer pool in concurrency limiters
...
This should reduce the number of memory allocations in highly loaded system
2019-05-28 17:20:10 +03:00
Aliaksandr Valialkin
4859ca0cda
app/vmselect: update comment according to the updated code
2019-05-26 22:38:58 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
