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Oleg Zaytsev fe90dcccff
Revert ListPostings change (#12955) 
Reverts change from https://github.com/prometheus/prometheus/pull/12906

The benchmarks show that it's slower when intersecting, which is a
common usage for ListPostings (when intersecting matchers from Head)

(old is before #12906, new is #12906):

                           │     old     │                 new                 │
                           │   sec/op    │   sec/op     vs base                │
Intersect/LongPostings1-16   20.54µ ± 1%   21.11µ ± 1%   +2.76% (p=0.000 n=20)
Intersect/LongPostings2-16   51.03m ± 1%   52.40m ± 2%   +2.69% (p=0.000 n=20)
Intersect/ManyPostings-16    194.2m ± 3%   332.1m ± 1%  +71.00% (p=0.000 n=20)
geomean                      5.882m        7.161m       +21.74%

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
2023-10-09 17:25:18 +02:00
..
index.go Add context argument to LabelQuerier.LabelValues (#12665) 2023-09-14 16:02:04 +02:00
index_test.go Add context argument to LabelQuerier.LabelValues (#12665) 2023-09-14 16:02:04 +02:00
postings.go Revert ListPostings change (#12955) 2023-10-09 17:25:18 +02:00
postings_test.go Revert ListPostings change (#12955) 2023-10-09 17:25:18 +02:00
postingsstats.go Update exp package (#12650) 2023-09-21 22:53:51 +02:00
postingsstats_test.go Format Go source files using 'gofumpt -w -s -extra' 2021-11-02 19:52:34 +01:00