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Łukasz Mierzwa 5597020a60 Use github.com/klauspost/compress for gzip and zlib 
klauspost/compress is a high quality drop-in replacement for common Go
compression libraries. Since Prometheus sends out a lot of HTTP requests
that often return compressed output having improved compression
libraries helps to save cpu & memory resources.
On a test Prometheus server I was able to see cpu reduction from 31 to
30 cores.

Benchmark results:

name                                old time/op    new time/op    delta
TargetScraperGzip/metrics=1-8         69.4µs ± 4%    69.2µs ± 3%     ~     (p=0.122 n=50+50)
TargetScraperGzip/metrics=100-8       84.3µs ± 2%    80.9µs ± 2%   -4.02%  (p=0.000 n=48+46)
TargetScraperGzip/metrics=1000-8       296µs ± 1%     274µs ±14%   -7.35%  (p=0.000 n=47+45)
TargetScraperGzip/metrics=10000-8     2.06ms ± 1%    1.66ms ± 2%  -19.34%  (p=0.000 n=47+45)
TargetScraperGzip/metrics=100000-8    20.9ms ± 2%    17.5ms ± 3%  -16.50%  (p=0.000 n=49+50)

name                                old alloc/op   new alloc/op   delta
TargetScraperGzip/metrics=1-8         6.06kB ± 0%    6.07kB ± 0%   +0.24%  (p=0.000 n=48+48)
TargetScraperGzip/metrics=100-8       7.04kB ± 0%    6.89kB ± 0%   -2.17%  (p=0.000 n=49+50)
TargetScraperGzip/metrics=1000-8      9.02kB ± 0%    8.35kB ± 1%   -7.49%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=10000-8     18.1kB ± 1%    16.1kB ± 2%  -10.87%  (p=0.000 n=47+47)
TargetScraperGzip/metrics=100000-8    1.21MB ± 0%    1.01MB ± 2%  -16.69%  (p=0.000 n=36+50)

name                                old allocs/op  new allocs/op  delta
TargetScraperGzip/metrics=1-8           71.0 ± 0%      72.0 ± 0%   +1.41%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=100-8         81.0 ± 0%      76.0 ± 0%   -6.17%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=1000-8        92.0 ± 0%      83.0 ± 0%   -9.78%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=10000-8       93.0 ± 0%      91.0 ± 0%   -2.15%  (p=0.000 n=50+50)
TargetScraperGzip/metrics=100000-8       111 ± 0%       135 ± 1%  +21.89%  (p=0.000 n=40+50)

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
 		2024-02-22 17:08:15 +00:00
..
testdata promtool: allow setting multiple matchers to "promtool tsdb dump" command. (#13296) 2024-01-15 10:29:53 +00:00
analyze.go Add analyze histograms command to promtool (#12331) 2024-01-10 17:32:36 +01:00
analyze_test.go Add analyze histograms command to promtool (#12331) 2024-01-10 17:32:36 +01:00
archive.go Use github.com/klauspost/compress for gzip and zlib 2024-02-22 17:08:15 +00:00
backfill.go enable gocritic, unconvert and unused linters 2023-04-13 19:20:22 +00:00
backfill_test.go Tests: use replacement DeepEquals using go-cmp 2024-02-08 19:30:20 +00:00
debug.go refactor (package cmd): move from github.com/pkg/errors to 'errors' and 'fmt' packages (#10733) 2022-05-24 16:58:59 +10:00
main.go Enhanced visibility for `promtool test rules` with JSON colored formatting (#13342) 2024-01-18 09:49:16 -05:00
main_test.go golangci-lint: enable testifylint linter (#13254) 2023-12-07 11:35:01 +00:00
metrics.go Add a header to count retried remote write requests (#12729) 2023-09-20 11:11:03 +01:00
query.go Add analyze histograms command to promtool (#12331) 2024-01-10 17:32:36 +01:00
rules.go Merge branch 'main' into linter/nilerr 2023-04-19 19:56:39 +02:00
rules_test.go golangci-lint: enable testifylint linter (#13254) 2023-12-07 11:35:01 +00:00
sd.go promtool: use go-cmp instead of DeepEqual 2024-02-08 19:30:20 +00:00
sd_test.go Tests: use replacement DeepEquals using go-cmp 2024-02-08 19:30:20 +00:00
tsdb.go Optimize histogram iterators (#13340) 2024-01-23 17:02:14 +01:00
tsdb_test.go promtool: allow setting multiple matchers to "promtool tsdb dump" command. (#13296) 2024-01-15 10:29:53 +00:00
unittest.go promtool: use go-cmp instead of DeepEqual 2024-02-08 19:30:20 +00:00
unittest_test.go Refactor cmd tests to use testify. 2024-02-01 13:51:31 +00:00