sharkdp/hyperfine

Reserve cpus for benchmarking

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#751 建立於 2024年6月19日

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 (3 留言) (0 反應) (0 負責人)Rust (28,110 star) (479 fork)batch import
help wanted

描述

Hello, thank you for the great tool!

I was wondering whether it's better to combine this tool with something like cpuset, to reserve the cpus the benchmark and hyperfine run on.

Would this make a difference? I understand that hyperfine will catch outliers stemming from, e.g., competing programs, but would this be avoided in the first place by reserving the cpus?

Thank you for your time.

貢獻者指南

技術棧
rust
領域
performance
議題類型
research
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
active
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
unclear
前置要求
無
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Explore the feasibility of integrating CPU pinning (e.g., using cpuset) into hyperfine to reduce benchmark variance. Review hyperfine's benchmarking loop in src/benchmark.rs and consider how to optionally set CPU affinity for the child process (e.g., via the nix crate or platform specific syscalls). Check if there are existing discussions or PRs about CPU isolation (none linked). Document the trade offs between using cpuset vs relying on hyperfine's statistical outlier detection.