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[#1146] engine: remove TODO and add a comment

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Parallel check seems to be slower, so remove TODO.
```
name \ time/op      old          new           pool
Exists/2_shards-40  52.3µs ±23%   91.6µs ± 6%   84.2µs ± 1%
Exists/4_shards-40  72.7µs ±11%  121.8µs ± 8%  116.9µs ± 5%

name \ alloc/op     old          new           pool
Exists/2_shards-40  5.00kB ± 0%   5.03kB ± 0%   5.16kB ± 0%
Exists/4_shards-40  9.89kB ± 0%   9.93kB ± 1%  10.19kB ± 0%

name \ allocs/op    old          new           pool
Exists/2_shards-40     112 ± 1%      115 ± 1%      117 ± 1%
Exists/4_shards-40     207 ± 1%      211 ± 1%      216 ± 1%
```

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-03-03 16:52:27 +03:00 committed by Alex Vanin
parent dab6bcabe4
commit ce76325840
1 changed files with 3 additions and 1 deletions
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4
pkg/local_object_storage/engine/put.go
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@ -49,7 +49,9 @@ func (e *StorageEngine) put(prm *PutPrm) (*PutRes, error) {
defer elapsed(e.metrics.AddPutDuration)()
}
_, err := e.exists(prm.obj.Address()) // TODO: #1146 make this check parallel
// In #1146 this check was parallelized, however, it became
// much slower on fast machines for 4 shards.
_, err := e.exists(prm.obj.Address())
if err != nil {
return nil, err
}