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Optimize decryptObjectInfo (#10726)

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`decryptObjectInfo` is a significant bottleneck when listing objects.

Reduce the allocations for a significant speedup.

https://github.com/minio/sio/pull/40

```
λ benchcmp before.txt after.txt
benchmark                          old ns/op     new ns/op     delta
Benchmark_decryptObjectInfo-32     24260928      808656        -96.67%

benchmark                          old MB/s     new MB/s     speedup
Benchmark_decryptObjectInfo-32     0.04         1.24         31.00x

benchmark                          old allocs     new allocs     delta
Benchmark_decryptObjectInfo-32     75112          48996          -34.77%

benchmark                          old bytes     new bytes     delta
Benchmark_decryptObjectInfo-32     287694772     4228076       -98.53%
```
This commit is contained in:
Klaus Post
2020-10-29 09:34:20 -07:00
committed by GitHub
parent 4bf90ca67f
commit 6b14c4ab1e
10 changed files with 195 additions and 35 deletions
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go.sum
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@@ -318,6 +318,8 @@ github.com/minio/simdjson-go v0.1.5 h1:6T5mHh7r3kUvgwhmFWQAjoPV5Yt5oD/VPjAI9ViH1
github.com/minio/simdjson-go v0.1.5/go.mod h1:oKURrZZEBtqObgJrSjN1Ln2n9MJj2icuBTkeJzZnvSI=
github.com/minio/sio v0.2.0 h1:NCRCFLx0r5pRbXf65LVNjxbCGZgNQvNFQkgX3XF4BoA=
github.com/minio/sio v0.2.0/go.mod h1:nKM5GIWSrqbOZp0uhyj6M1iA0X6xQzSGtYSaTKSCut0=
github.com/minio/sio v0.2.1 h1:NjzKiIMSMcHediVQR0AFVx2tp7Wxh9tKPfDI3kH7aHQ=
github.com/minio/sio v0.2.1/go.mod h1:8b0yPp2avGThviy/+OCJBI6OMpvxoUuiLvE6F1lebhw=
github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=