Commit graph

111 commits

Author SHA1 Message Date
Bryan Boreham 24ebff9c4a labels: don't test that Hash() works on unordered labels
Labels are required to be ordered.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-08-03 11:18:02 +02:00
Bryan Boreham fb2d883f1e labels: test Compare without knowing the exact result
Only the sign of the result is important

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-08-03 11:18:02 +02:00
Matthieu MOREL c2b4de3611
refactor (package model): move from github.com/pkg/errors to 'errors' and 'fmt' packages (#10747)
Signed-off-by: Matthieu MOREL <mmorel-35@users.noreply.github.com>
Co-Authored-By: Julien Pivotto <roidelapluie@gmail.com>

Co-authored-by: Julien Pivotto <roidelapluie@gmail.com>
2022-06-27 21:29:19 +02:00
Bryan Boreham 2e2c014d52
Labels: optimise creation of signature with/without labels (#10667)
* Labels: create signature with/without labels

Instead of creating a new Labels slice then converting to signature,
go directly to the signature and save time.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Labels: refactor Builder tests

Have one test with a range of cases, and have them check the final
output rather than checking the internal structure of the Builder.

Also add a couple of cases where the value is "", which should be
interpreted as 'delete'.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Labels: add 'Keep' function to Builder

This lets us replace `Labels.WithLabels` with the more general `Builder`.

In `engine.resultMetric()` we can call `Keep()` instead of checking
and calling `Del()`.

Avoid calling `Sort()` in `Builder.Labels()` if we didn't add anything,
so that `Keep()` has the same performance as `WithLabels()`.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-06-07 10:08:27 +05:30
Łukasz Mierzwa b11062bfcc
Don't count added labels when initializing slice (#10756)
This was added in #10749 but based on feedback it might be over-allocating so worth removing.

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2022-06-04 08:45:02 +05:30
Łukasz Mierzwa 08262454a3
Preallocate Labels in labels.Builder (#10749)
This tries to avoid re-allocations of labels slice since we know possible max size

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2022-05-25 16:22:47 +02:00
Łukasz Mierzwa 89de30a0b7
Avoid reallocating map in MatchLabels (#10715)
We know the max size of our map so we can create it with that information and avoid extra allocations

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2022-05-20 10:18:31 +02:00
Nick Pillitteri 53ac9d6d66
Compare equality of label.Label structs directly (#10427)
* labels.Equal benchmark for equal, not equal, and differing lengths

Signed-off-by: Nick Pillitteri <nick.pillitteri@grafana.com>

* Compare equality of label.Label structs directly

Compare the structs using `==` instead of the name and value
of each label. This is functionally equivalent and about ~10%
faster in my testing.

Signed-off-by: Nick Pillitteri <nick.pillitteri@grafana.com>

* Use longer more realistic names and values in benchmark

Signed-off-by: Nick Pillitteri <nick.pillitteri@grafana.com>
2022-03-15 00:30:04 +01:00
Łukasz Mierzwa da23c4649a
Enable misspell check in golangci-lint (#10393)
Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2022-03-03 18:11:19 +01:00
Bryan Boreham 579331446a
Allow downstream projects to use faster regexp (#10251)
* Add benchmark for FastRegexMatcher

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Use modified regexp package with optimisations

See https://github.com/grafana/regexp/tree/speedup#readme

Includes the following changes proposed upstream:
* [regexp: allow patterns with no alternates to be one-pass](https://go-review.googlesource.com/c/go/+/353711)
* [regexp: speed up onepass prefix check](https://go-review.googlesource.com/c/go/+/354909)
* [regexp: handle prefix string with fold-case](https://go-review.googlesource.com/c/go/+/358756)
* [regexp: avoid copying each instruction executed](https://go-review.googlesource.com/c/go/+/355789)
* [regexp: allow prefix string anchored at beginning](https://go-review.googlesource.com/c/go/+/377294)

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

* Use regexp code identical to upstream Go

Change `grafana/regexp` import to use `main` branch.

This means Prometheus is not using the proposed optimisations, but
downstream users of Prometheus code are able to `replace` the library
with the `speedup` branch which does.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-02-08 11:03:20 +01:00
beorn7 c954cd9d1d Move packages out of deprecated pkg directory
This creates a new `model` directory and moves all data-model related
packages over there:
  exemplar labels relabel rulefmt textparse timestamp value

All the others are more or less utilities and have been moved to `util`:
  gate logging modetimevfs pool runtime

Signed-off-by: beorn7 <beorn@grafana.com>
2021-11-09 08:03:10 +01:00