perf: improve BufList::copy_to_bytes if len == remaining #112
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Using
take(len)
costs a bit in performance. If copying the full thing (which is whatCollected::to_bytes()
does), we can skip usingtake(n)
and see a significant speed up.Using hyper's body benchmarks, on my tiny VM, the perf improvement is from 5GB/s to 31GB/s.