Switch to an alternative memory allocator in rustc
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C-discussion
T-compiler
- Dominant language
- Rust
- Stars
- 119k
- Forks
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- PR merge metrics
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Description
Hey!
In mimalloc 3.x, the max-rss regression has been fixed - meaning it SHOULD be better than jemalloc now. Another alternative worth considering is https://github.com/mjansson/rpmalloc/
Thanks,
Alex <3
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by examining how rustc currently selects its memory allocator and compare the reported max-RSS behavior of jemalloc, mimalloc 3.x, and rpmalloc. The issue does not name files or tests; done would require a settled allocator choice and evidence that the selected alternative improves the relevant regression.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers, performance
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100