seanmonstar / seanmonstar/httparse

Benchmark is not an apples to apples comparison (sse4.2)

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Dominant language
Rust
Stars
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Forks
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Description

Hello, first, thanks for making this tool.

I wanted to point out your benchmark is a bit unfair as you compare httparse sse4 against picohttpparser without sse4. The reason picohttpparser doesn't have sse4 is because your dependency 'pico-sys' does not compile picohttpparser with sse4 enabled.

Your benchmark showed a ~60% improvement in performance for 'bench_pico' once sse4 was enabled in the underlying crate.

I forked the underlying crate 'pico-sys' and made a few modifications if you want to verify my results:

https://github.com/errantmind/rust-pico-sys

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Research direction

Start by inspecting the benchmark entry point for bench_pico and the pico-sys dependency configuration. Verify how httparse and picohttpparser are built, then compare both with SSE4 enabled; done means the benchmark uses equivalent SIMD settings and reports a fair comparison.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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