dtolnay/cargo-tally

Reduce memory usage

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#76 opened on Aug 8, 2023

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Description

Memory usage of cargo tally can get quite severe. Running cargo tally winapi windows-sys peaked at 12.7 GB, which isn't terrible (but also far from great). However, when trying it with --transitive, the program exhausts my 32 GB of RAM and 8 GB of swap before Linux kills it as OOM, so it apparently uses in excess of 40 GB.

Is it somehow possible to reduce the amount of memory used? I don't mind if it takes longer to run; the speed is reasonable as-is. Perhaps if some data could be written to disk (and later read back as needed) if memory usage exceeds a threshold?

Contributor guide

Research direction
Investigate memory usage patterns in cargo tally, particularly when processing transitive dependencies. Consider implementing disk based caching or streaming to reduce peak memory consumption.
Tech stack
rust
Domain
cli
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50