The Go runtime/metrics package currently exports extremely granular
histograms. Exponentially bucket any histogram with unit "seconds"
or "bytes" instead to dramatically reduce the number of buckets, and
thus the number of metrics.
This change also adds a test to check for expected cardinality to
prevent cardinality surprises in the future.
Signed-off-by: Michael Anthony Knyszek <mknyszek@google.com>
A previous PR made it so that the Go 1.17 collector locked only around
uses of rmSampleBuf, but really that means that Metric values may be
sent over the channel containing some values from future metrics.Read
calls. While generally-speaking this isn't a problem, we lose any
consistency guarantees provided by the runtime/metrics package.
Also, that optimization to not just lock around all of Collect was
premature. Truthfully, Collect is called relatively infrequently, and
its critical path is fairly fast (10s of µs). To prove it, this change
also adds a benchmark.
name old time/op new time/op delta
GoCollector-16 43.7µs ± 2% 43.2µs ± 2% ~ (p=0.190 n=9+9)
Note that because the benchmark is single-threaded it actually looks
like it might be getting *slightly* faster, because all those Collect
calls for the Metrics are direct calls instead of interface calls.
Signed-off-by: Michael Anthony Knyszek <mknyszek@google.com>
* Fix convention violating names for generated collector metrics
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Add new Go collector example
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* WIP partial match
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Cleanup
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Comments
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Tests and comments
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Handle properly deleting multiple metrics, update tests
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Comments
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Try using curry values
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Skip curry value to demo
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Fix curry deletion, remove outdated comment.
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Fix logic for deletion of metrics from prior to currying
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Don't match curried values. Update tests.
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Remove unneccesasry helper and todo comments
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Comment about partial matching curried labels
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Simplify curried value check
Signed-off-by: Zach Stone <zach@giantswarm.io>
* Add timeout parameter for queries
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
* Update api/prometheus/v1/api.go
Co-authored-by: Kemal Akkoyun <kakkoyun@users.noreply.github.com>
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
* Update api/prometheus/v1/api.go
Co-authored-by: Kemal Akkoyun <kakkoyun@users.noreply.github.com>
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
* Pass timeout as stringified time.Duration instead of millisecond value
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
* Update QueryRange API to support timeouts
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
* Add timeout to test request params
Signed-off-by: Joseph Woodward <joseph.woodward@xeuse.com>
Co-authored-by: Kemal Akkoyun <kakkoyun@users.noreply.github.com>
* Renamed files.
Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
* gocollector: Added options to Go Collector for diffetent collections.
Fixes https://github.com/prometheus/client_golang/issues/983
Also:
* fixed TestMemStatsEquivalence, it was noop before (:
* Removed gc_cpu_fraction metric completely, since it's not working completely for Go1.17+
Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
* Make Query requests idempotent
Address #1020.
Signed-off-by: Tomáš Dohnálek <dohnto@gmail.com>
* Use empty header
Signed-off-by: Tomáš Dohnálek <dohnto@gmail.com>
* Document issue with original documentation
Signed-off-by: Tomáš Dohnálek <dohnto@gmail.com>
Add PushContext and AddContext to Pusher, which are context-aware
version of Push and Add respectively. They give a caller the ability
to cancel an HTTP request.
Signed-off-by: Tatsuhiro Tsujikawa <ttsujika@zlab.co.jp>
Make apiClientImpl.DoGetFallback more idiomatic and efficient:
* Save result of args.Encode() operation as it might be used 2 times in
the function and due to looping and sorting it might be heavy.
* Follow line-of-sight practise and therefore simplify the code.
Signed-off-by: Tomáš Dohnálek <dohnto@gmail.com>
* Add config to test against go1.18
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Try to fix circleci
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Add support for exemplars on constHistogram
Co-authored-by: William Perron <william.perron@shopify.com>
Signed-off-by: William Perron <william.perron@shopify.com>
* remove GetExemplars function
Signed-off-by: William Perron <william.perron@shopify.com>
* fixed linting warnings
reduce repetition in constHistogram w/ exemplar
Signed-off-by: William Perron <william.perron@shopify.com>
* Add values to correct bucket
Signed-off-by: William Perron <william.perron@shopify.com>
* Misc fixes
Co-authored-by: Francis Bogsanyi <francis.bogsanyi@shopify.com>
Signed-off-by: William Perron <william.perron@shopify.com>
* avoid panic when there are fewer buckets than exemplars
Co-authored-by: Arun Mahendra <arun.mahendra@shopify.com>
Signed-off-by: William Perron <william.perron@shopify.com>
* Added MustNewMetricWithExemplars that wraps metrics with exemplar (#3)
Changes:
* Make sure to not "leak" dto.Metric
* Reused upper bounds we already have for histogram
* Common code for all types.
Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
Co-authored-by: Arun Mahendra <arun.mahendra@shopify.com>
Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
The Go runtime/metrics package currently exports extremely granular
histograms. Exponentially bucket any histogram with unit "seconds"
or "bytes" instead to dramatically reduce the number of buckets, and
thus the number of metrics.
This change also adds a test to check for expected cardinality to
prevent cardinality surprises in the future.
Signed-off-by: Michael Anthony Knyszek <mknyszek@google.com>
Kemal Akkoyun