rust-lang / rust-lang/rustc-perf

Record max-rss on the rustc build benchmark

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Dominant language
Rust
Stars
733
Forks
189
Avg merge
10h 52m
Merged PRs (30d)
43

Description

Max-rss is even more important than wall time when building rustc on low end devices. A high wall time would just take a while to build, while a high max-rss would completely prevent builds if the address space is exhausted or would merely cause it to grind to a halt when ram is exhausted and swap has to be used.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the rustc build benchmark and reading how it currently records wall time. Add max-rss recording alongside the existing benchmark result, then verify that the benchmark exposes max-rss so builds on low-end devices can be compared by memory use.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers, performance
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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