Software:Record and replay debugging
Record and replay debugging is the process of recording the execution of a software program so that it may be played back within a debugger to help diagnose and resolve defects.[1] The concept is analogous to the use of a flight data recorder to diagnose the cause of an airplane flight malfunction.[2]
Recording and replaying
Record and replay debuggers record application state at every step of the program's process and thread execution, including memory interactions, deterministic and non-deterministic inputs, system resource status, and store it to disk in a log.[3] The recording allows the program to be replayed again and again, and debugged exactly as it happened.
Usage
Recordings can be made in one location and replayed in another,[4] which makes it useful for remote debugging.
Record and replay debugging is particularly useful for debugging intermittent and non-deterministic defects, which can be difficult to reproduce.
Record and replay debugging technology is often fundamental to reverse debugging and time travel debugging.
Record and replay debuggers
- GDB (GNU)[5]
- LiveRecorder (Undo)[6]
- rr (Mozilla)
- TotalView's ReplayEngine (RogueWave)[7]
- PyTrace for Python[8]
References
- ↑ Mozilla (2017). "Engineering Record And Replay For Deployability Extended Technical Report". arXiv:1705.05937 [cs.PL].
- ↑ Zicari, Roberto. "On Software Reliability. Interview with Barry Morris and Dale Vile.". ODBMS Industry Watch. http://www.odbms.org/blog/2019/04/on-software-reliability-interview-with-barry-morris-and-dale-vile/. Retrieved 2 April 2019.
- ↑ Undo, Ltd.. "System and method for debugging of computer programs". US Patent Office. https://patents.google.com/patent/US9268666. Retrieved 23 February 2016.
- ↑ Undo, Ltd. "Remote recording". Undo, Ltd.. https://docs.undo.io/RemoteDebugging.html. Retrieved 1 October 2019.
- ↑ "Process Record and Replay (Debugging with GDB)". https://sourceware.org/gdb/current/onlinedocs/gdb/Process-Record-and-Replay.html.
- ↑ "LiveRecorder - Undo". https://undo.io/solutions/products/live-recorder/.
- ↑ "TotalView for HPC". https://help.totalview.io/previous_releases/2019/html/index.html#page/User_Guides%2FUsingReplayEngine.html%23.
- ↑ "PyTrace Time Travel Debugger for Python". https://pytrace.com/.
Original source: https://en.wikipedia.org/wiki/Record and replay debugging.
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