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a49f0717b3
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[#1685] metabase: Cache frequently accessed singleton buckets
There are some buckets we access almost always, to check whether an
object is alive. In search we also iterate over lots of objects, and
`tx.Bucket()` shows itself a lot in pprof.
```
goos: linux
goarch: amd64
pkg: git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase
cpu: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
│ 1 │ 2 │
│ sec/op │ sec/op vs base │
Select/string_equal-8 4.753m ± 6% 3.969m ± 14% -16.50% (p=0.000 n=10)
Select/string_not_equal-8 4.247m ± 9% 3.486m ± 11% -17.93% (p=0.000 n=10)
Select/common_prefix-8 4.163m ± 5% 3.323m ± 5% -20.18% (p=0.000 n=10)
Select/unknown-8 3.557m ± 3% 3.064m ± 8% -13.85% (p=0.001 n=10)
geomean 4.158m 3.445m -17.15%
│ 1 │ 2 │
│ B/op │ B/op vs base │
Select/string_equal-8 2.250Mi ± 0% 1.907Mi ± 0% -15.24% (p=0.000 n=10)
Select/string_not_equal-8 2.250Mi ± 0% 1.907Mi ± 0% -15.24% (p=0.000 n=10)
Select/common_prefix-8 2.250Mi ± 0% 1.907Mi ± 0% -15.24% (p=0.000 n=10)
Select/unknown-8 2.243Mi ± 0% 1.900Mi ± 0% -15.29% (p=0.000 n=10)
geomean 2.248Mi 1.905Mi -15.26%
│ 1 │ 2 │
│ allocs/op │ allocs/op vs base │
Select/string_equal-8 56.02k ± 0% 47.03k ± 0% -16.05% (p=0.000 n=10)
Select/string_not_equal-8 56.02k ± 0% 47.03k ± 0% -16.05% (p=0.000 n=10)
Select/common_prefix-8 56.02k ± 0% 47.03k ± 0% -16.05% (p=0.000 n=10)
Select/unknown-8 55.03k ± 0% 46.04k ± 0% -16.34% (p=0.000 n=10)
geomean 55.78k 46.78k -16.12%
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
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2025-03-20 10:17:42 +00:00 |
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