nnethercote/dhat-rs

Health v2 · maintenance only

Adoption not part of the score

1005 stars · 49 forks observed · 2026-10-05

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-07, confidence 0.95

A Rust crate providing heap profiling and ad hoc profiling capabilities similar to Valgrind's DHAT, without requiring external tools. It also supports heap usage testing, letting tests assert on allocation counts, peak heap usage, and leak-free execution.

Use cases

• profile heap allocations in a Rust program
• find which code causes peak memory usage
• test that code performs exactly N heap allocations
• assert peak heap usage stays under a threshold
• detect memory leaks in Rust tests
• ad hoc profiling of data-intensive code paths

When to choose

• you want DHAT-style profiling without running under Valgrind
• you need programmatic heap usage assertions in tests
• you're debugging excessive allocations or memory growth in Rust

When to avoid

• you need actively maintained tools with fast issue response - the author warns maintenance is not a priority
• you need production profiling rather than development-time analysis
• you need a general-purpose debugger rather than memory profiling

Facets

library · maturity maintenance

benchmarking testing developer-tools developer-tools performance testing rust cross-platform heap-profiling memory-profiling dhat profiling ad-hoc-profiling heap-usage-testing

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