Commit Graph

1591 Commits

Author SHA1 Message Date
beorn7 294cca4252 Merge branch 'main' into sparsehistogram 2022-02-02 16:07:09 +01:00
Manuel Rüger 5678ca5ed1 go.mod: Set minimal support version of go to 1.15
As requested in https://github.com/prometheus/common/pull/353#discussion_r793113705

Signed-off-by: Manuel Rüger <manuel@rueg.eu>
2022-01-31 11:03:13 +01:00
Kemal Akkoyun 2e1c4818cc
Cut v1.12.1 (#978)
* Cut v1.12.1

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Apply review suggestions

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-29 15:48:34 +01:00
Michael Knyszek 77626d64fa
Reduce granularity of histogram buckets for Go 1.17 collector (#974)
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>
2022-01-28 05:46:45 +01:00
Bryan Boreham 4dd3cbb4ab
API client: make http reads more efficient (#976)
Replace `io.ReadAll` with `bytes.Buffer.ReadFrom`.
Both need to resize a buffer until they have finished reading;
the former increases by 1.25x each time while the latter uses 2x.

Also added a benchmark to demonstrate the benefit:
name             old time/op    new time/op    delta
Client/4KB-8       35.9µs ± 4%    35.3µs ± 3%     ~     (p=0.310 n=5+5)
Client/50KB-8      83.1µs ± 8%    69.5µs ± 1%  -16.37%  (p=0.008 n=5+5)
Client/1000KB-8     891µs ± 6%     750µs ± 0%  -15.83%  (p=0.016 n=5+4)
Client/2000KB-8    1.74ms ± 2%    1.35ms ± 1%  -22.72%  (p=0.008 n=5+5)

name             old alloc/op   new alloc/op   delta
Client/4KB-8       20.2kB ± 0%    20.4kB ± 0%   +1.26%  (p=0.008 n=5+5)
Client/50KB-8       218kB ± 0%     136kB ± 0%  -37.65%  (p=0.008 n=5+5)
Client/1000KB-8    5.88MB ± 0%    2.11MB ± 0%  -64.10%  (p=0.008 n=5+5)
Client/2000KB-8    11.7MB ± 0%     4.2MB ± 0%  -63.93%  (p=0.008 n=5+5)

name             old allocs/op  new allocs/op  delta
Client/4KB-8         75.0 ± 0%      72.0 ± 0%   -4.00%  (p=0.008 n=5+5)
Client/50KB-8         109 ± 0%        98 ± 0%  -10.09%  (p=0.079 n=4+5)
Client/1000KB-8       617 ± 0%       593 ± 0%   -3.89%  (p=0.008 n=5+5)
Client/2000KB-8     1.13k ± 0%     1.09k ± 0%   -3.27%  (p=0.008 n=5+5)

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-01-25 11:16:10 +01:00
Michael Knyszek 85206714ae
Use simpler locking in the Go 1.17 collector (#975)
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>
2022-01-25 08:43:45 +01:00
Michael Knyszek f63e219e6b
Make the Go 1.17 collector thread-safe (#969) 2022-01-21 08:34:45 +01:00
Kemal Akkoyun 01087964d0
Cut v1.12.0 (#966)
* Cut v1.12.0

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Bump the day

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-19 07:59:25 +00:00
Kemal Akkoyun 08a53e57a2 Bump the day
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-19 08:46:00 +01:00
Kemal Akkoyun 2ce58a71db Cut v1.12.0
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-18 23:22:33 +01:00
Kemal Akkoyun 5bd9ee52dc
go.*: Update dependencies (#965)
* Update dependencies

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Update deprecated APIs

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Add missing dependency explicitly

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-18 20:32:44 +01:00
Kemal Akkoyun 9075cdf616
promhttp: Check validity of method and code label values (#962)
* Check validity of method and code label values

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Use more flexibly functional option pattern for configuration

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Update documentation

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Simplify

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Fix inconsistent method naming

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
2022-01-18 10:19:28 +01:00
Michael Knyszek 22da9497b8
Use the runtime/metrics package for the Go collector for 1.17+ (#955)
This change introduces use of the runtime/metrics package in place of
runtime.MemStats for Go 1.17 or later. The runtime/metrics package was
introduced in Go 1.16, but not all the old metrics were accounted for
until 1.17.

The runtime/metrics package offers several advantages over using
runtime.MemStats:
* The list of metrics and their descriptions are machine-readable,
  allowing new metrics to get added without any additional work.
* Detailed histogram-based metrics are now available, offering much
  deeper insights into the Go runtime.
* The runtime/metrics API is significantly more efficient than
  runtime.MemStats, even with the additional metrics added, because
  it does not require any stop-the-world events.

That being said, integrating the package comes with some caveats, some
of which were discussed in #842. Namely:
* The old MemStats-based metrics need to continue working, so they're
  exported under their old names backed by equivalent runtime/metrics
  metrics.
* Earlier versions of Go need to continue working, so the old code
  remains, but behind a build tag.

Finally, a few notes about the implementation:
* This change includes a whole bunch of refactoring to avoid significant
  code duplication.
* This change adds a new histogram metric type specifically optimized
  for runtime/metrics histograms. This type's methods also include
  additional logic to deal with differences in bounds conventions.
* This change makes a whole bunch of decisions about how runtime/metrics
  names are translated.
* This change adds a `go generate` script to generate a list of expected
  runtime/metrics names for a given Go version for auditing. Users of
  new versions of Go will transparently be allowed to use new metrics,
  however.

Signed-off-by: Michael Anthony Knyszek <mknyszek@google.com>
2022-01-16 16:41:56 +00:00
beorn7 70253f4dd0 Fix typo in doc comment
Signed-off-by: beorn7 <beorn@grafana.com>
2022-01-11 14:07:18 +01:00
beorn7 5b19c553c3 Merge branch 'master' into sparsehistogram 2022-01-11 14:01:38 +01:00
Łukasz Mierzwa dc1559e8ef
Update /api/v1/status/tsdb to include headStats (#925)
Current structs for v1 HTTP API assume that there is chunkCount and timeSeriesCount on /api/v1/status/runtimeinfo, which seems to be gone for at least a few releases. /api/v1/status/tsdb now holds an extra headStats block with chunkCount, numSeries and a few other fields.
Update API models and tests to reflect this change.

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2022-01-05 10:09:29 +01:00
Kemal Akkoyun e6e54e8082
Merge pull request #944 from yeya24/add-wal-replay-status
API: support wal replay status api
2022-01-05 10:04:10 +01:00
Kemal Akkoyun 98fbd996b0
Merge pull request #952 from prometheus/repo_sync
Synchronize common files from prometheus/prometheus
2021-12-21 08:41:18 +00:00
prombot 70a41d58f8 Update common Prometheus files
Signed-off-by: prombot <prometheus-team@googlegroups.com>
2021-12-20 20:51:20 +00:00
Kemal Akkoyun dbf420e7ce
Merge pull request #928 from prometheus/repo_sync
Synchronize common files from prometheus/prometheus
2021-12-20 11:53:34 +00:00
Kemal Akkoyun 1d09783cb9
Merge pull request #950 from mrueg/go-1.17
Add support for go 1.17
2021-12-20 11:51:53 +00:00
Manuel Rüger 8535b62021 Add new go:build lines for go 1.17
Signed-off-by: Manuel Rüger <manuel@rueg.eu>
2021-12-17 23:38:35 +01:00
José Carlos Chávez d28a147d3c chore: adds support for go 1.17 on CI.
Signed-off-by: José Carlos Chávez <jcchavezs@gmail.com>
2021-12-17 23:06:20 +01:00
Ben Ye 440c09d3ec support wal replay status api
Signed-off-by: Ben Ye <ben.ye@bytedance.com>
2021-12-04 22:19:58 -08:00
Björn Rabenstein 6d5cf25fcc
Merge pull request #939 from gozeloglu/fix-typo
Fix typo
2021-11-29 13:18:11 +01:00
Gökhan Özeloğlu 55320aa8b0 Fix typo
Signed-off-by: Gökhan Özeloğlu <gozeloglu@gmail.com>
2021-11-25 11:21:10 +03:00
Kemal Akkoyun 1b145cad68
Merge pull request #935 from prometheus/beorn7/examples
example/random: Move flags and metrics into main()
2021-11-10 18:25:28 +01:00
beorn7 f78dc19a65 Move flags and metrics into main()
Fixes #933.

Signed-off-by: beorn7 <beorn@grafana.com>
2021-11-10 16:20:42 +01:00
prombot a7919ad927 Update common Prometheus files
Signed-off-by: prombot <prometheus-team@googlegroups.com>
2021-10-23 00:01:35 +00:00
David Trudgian 679eb0d315
Update cespare/xxhash dependency (#913)
Brings in a fix for asm errors when dynamic linking with Go 1.17.

Fixes #912

Signed-off-by: David Trudgian <david.trudgian@sylabs.io>
2021-09-29 11:11:17 +01:00
Kemal Akkoyun 35ee299e50
Merge pull request #909 from prometheus/repo_sync
Synchronize common files from prometheus/prometheus
2021-09-20 11:02:35 +02:00
prombot 6cd53c4d83 Update common Prometheus files
Signed-off-by: prombot <prometheus-team@googlegroups.com>
2021-09-16 00:01:42 +00:00
Björn Rabenstein dfbcc28fff
Merge pull request #901 from prometheus/beorn7/histogram
Implement strategy to limit the sparse bucket count
2021-09-01 13:46:42 +02:00
beorn7 263be8dab7 Refactoring of sparse histograms
Signed-off-by: beorn7 <beorn@grafana.com>
2021-09-01 01:26:06 +02:00
beorn7 24099603bc Implement strategy to limit the sparse bucket count
Signed-off-by: beorn7 <beorn@grafana.com>
2021-08-31 13:28:27 +02:00
beorn7 84fcafffb1 Merge branch 'master' into sparsehistogram 2021-08-18 16:41:04 +02:00
Seth Bunce 2261d5cda1
add ExponentialBucketsRange function (#899)
This function calculates exponential buckets with different arguments
than the existing ExponentialBuckets function. Instead of specifying the
start and factor, the user can specify the min and max bucket value. We
have been doing it this way internally at my company for some time.

Signed-off-by: Seth Bunce <seth.bunce@getcruise.com>
2021-08-12 16:56:44 +01:00
PrometheusBot 20eef74042
Update common Prometheus files (#892)
Signed-off-by: prombot <prometheus-team@googlegroups.com>
2021-07-24 10:31:05 +01:00
beorn7 9ef5f90a76 Allow a zero threshold of zero
Signed-off-by: beorn7 <beorn@grafana.com>
2021-07-20 19:01:13 +02:00
Kemal Akkoyun cb5c8ff250
Merge pull request #881 from sivabalan/master
Updating dependency versions + cleanup
2021-07-15 09:12:35 +02:00
Kemal Akkoyun 26d4b4c53e
Merge pull request #885 from prometheus/superq/badgers
Update status badgets
2021-07-15 09:06:41 +02:00
Kemal Akkoyun c7175cc5a5
Merge pull request #888 from prometheus/repo_sync
Synchronize common files from prometheus/prometheus
2021-07-15 09:06:04 +02:00
beorn7 aa6f67a9e6 Add TODO about bucket search optimization
Signed-off-by: beorn7 <beorn@grafana.com>
2021-06-29 14:52:37 +02:00
prombot e23b9ce547 Update common Prometheus files
Signed-off-by: prombot <prometheus-team@googlegroups.com>
2021-06-25 00:01:28 +00:00
Björn Rabenstein 43f31c25a8
Merge pull request #886 from prometheus/beorn7/histogram
Switch sparse histograms to base-2 buckets
2021-06-24 22:22:18 +02:00
beorn7 514234486b Pin client_model to the most recent sparsehistogram commit
Signed-off-by: beorn7 <beorn@grafana.com>
2021-06-24 22:12:46 +02:00
beorn7 6c4e0ef740 Add tests for sparse histogram
Signed-off-by: beorn7 <beorn@grafana.com>
2021-06-23 21:56:26 +02:00
beorn7 31318b7523 Switch to base-2 buckets
This seem what OTel is converging towards, see
https://github.com/open-telemetry/oteps/pull/149 .

I see pros and cons with base-10 vs base-2. They are discussed in
detail in that OTel PR, and the gist of the discussion is pretty much
in line with my design doc. Since the balance is easy to tip here, I
think we should go with base-2 if OTel picks base-2. This also seems
to be in agreement with several proprietary solution (see again the
discussion on that OTel PR.)

The idea to make the number of buckets per power of 2 (or formerly 10)
a power of 2 itself was also sketched out in the design doc
already. It guarantees mergeability of different resolutions. I was
undecided between making it a recommendation or mandatory. Now I think
it should be mandatory as it has the additional benefit of playing
well with OTel's plans.

This commit also addresses a number of outstanding TODOs.

Signed-off-by: beorn7 <beorn@grafana.com>
2021-06-23 16:48:03 +02:00
SuperQ 6d946b5526
Update status badgets
Update to new locations
* Switch to CircleCI build badge.
* Use new pkg.go.dev for docs.

Signed-off-by: SuperQ <superq@gmail.com>
2021-06-23 10:12:43 +02:00
Sivabalan Thirunavukkarasu 5426b512dd
Updating dependency versions
Signed-off-by: Sivabalan Thirunavukkarasu <s.thirunavukkarasu@salesforce.com>
2021-06-17 21:04:49 +08:00