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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
..
README.md Move packages out of deprecated pkg directory 2021-11-09 08:03:10 +01:00
interface.go textparse: remove MetricType alias 2023-12-19 18:56:54 +00:00
interface_test.go textparse/scrape: Add option to scrape both classic and native histograms 2023-05-13 01:32:25 +02:00
openmetricslex.l UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
openmetricslex.l.go UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
openmetricsparse.go UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
openmetricsparse_test.go UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
promlex.l UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
promlex.l.go UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
promparse.go UTF-8: Add support for parsing UTF8 metric and label names 2024-02-15 14:34:37 -05:00
promparse_test.go Use github.com/klauspost/compress for gzip and zlib 2024-02-22 17:08:15 +00:00
promtestdata.nometa.txt Move packages out of deprecated pkg directory 2021-11-09 08:03:10 +01:00
promtestdata.txt Move packages out of deprecated pkg directory 2021-11-09 08:03:10 +01:00
protobufparse.go Prometheus support parse exemplars from native histogram (#13488) 2024-02-14 17:24:40 +01:00
protobufparse_test.go Prometheus support parse exemplars from native histogram (#13488) 2024-02-14 17:24:40 +01:00

README.md

Making changes to textparse lexers

In the rare case that you need to update the textparse lexers, edit promlex.l or openmetricslex.l and then run the following command: golex -o=promlex.l.go promlex.l

Note that you need golex installed: go get -u modernc.org/golex