rr is a record-and-replay debugger for Linux that captures a program’s execution and lets you replay the exact same run later inside gdb.
It’s designed to make difficult, intermittent, and low-level bugs easier to investigate by turning unreliable live debugging sessions into repeatable replays, and it can handle applications made up of multiple processes and threads.
This is free and open source software.
Key Features
- Provides deterministic record and replay for Linux applications.
- Extends gdb with efficient reverse execution.
- Supports hardware data watchpoints during replay.
- Can debug multi-process and multi-threaded workloads.
- Offers low overhead compared to similar tools, especially for mostly single-threaded workloads.
- Works with gdb scripting and IDE integration.
- Creates durable, compact traces that can be moved between machines.
- Includes a chaos mode to help reproduce intermittent bugs.
Website: github.com/rr-debugger/rr
Support:
Developer: rr-debugger
License: MIT License
rr is written in C++ and C. Learn C++ with our recommended free books and free tutorials. Learn C with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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