rbspy/rbspy

Health v2 · maintenance only

Adoption not part of the score

2573 stars · 106 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

rbspy is a sampling CPU profiler for Ruby that can profile already-running processes by PID or launch new ones, with low overhead safe for production. It records profiling data, saves raw data to disk, and generates flamegraphs for analysis.

Use cases

• profile a running Ruby process without restarting it
• generate flamegraphs for Ruby programs
• profile Ruby code in production with low overhead
• find which functions a Ruby program is calling
• record and analyze Ruby CPU usage over time
• profile a Ruby script run with bundle exec

When to choose

• you need to profile a Ruby process that is already running
• you want a low-overhead profiler safe for production use
• you want flamegraphs and saved raw profiling data
• you need cross-platform support (Linux, macOS, Windows, FreeBSD)

When to avoid

• you need to profile languages other than Ruby
• you need an instrumenting profiler with exact call counts rather than sampling
• you need a stable Rust library API (the crate API is not yet stable)

Facets

cli-tool · maturity active

benchmarking monitoring cli developer-tools performance windows bsd rust cli profiler sampling-profiler ruby flamegraph production-profiling command-line linux macos

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markdown · JSON · MCP: product_card(name="rbspy/rbspy")