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Ran 17 Feb 2019 01:49PM UTC

Files 10

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Committed 17 Feb 2019 01:46PM UTC coverage: 40.16%. Remained the same

Job # GO111MODULE=on

Build Type

push

travis-ci

Committed by

kixelated

Commit Message

Optimize WriteRTP

The previous code would Marshal the header allocating (header) bytes.
Then call append with the payload allocating payload bytes and copying
(header) bytes. Then later EncryptRTP will append the auth tag,
potentially allocating (header + payload + 10) bytes and copying
(header + payload) bytes.

This code avoids the extra allocation/copy by allocating the correct
size upfront. It also utilizes a reusable buffer between marshal calls.
This significantly reduces the allocations and work needed by the GC.

```
name                 old time/op    new time/op    delta
WriteRTP-8             9.73µs ± 2%    9.33µs ± 2%   -4.11%

name                 old alloc/op   new alloc/op   delta
WriteRTP-8             3.17kB ± 0%    1.10kB ± 0%  -65.15%

name                 old allocs/op  new allocs/op  delta
WriteRTP-8               13.0 ± 0%      10.0 ± 0%  -23.08%
```

Run Details

302 of 752 relevant lines covered (40.16%)

10.78 hits per line

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