This article orginally appeared on Network World
Linux debugging has taken a giant step forward with the release of LiveRecorder 5.0 from Undo. Just released on Wednesday, this product makes debugging on multi-process systems significantly easier. Based on flight recorder technology, it delves more deeply into processes to provide insight into what’s going on within each process. This includes memory, threads, program flow, service calls and more. To make this possible, LiveRecorder 5.0's record, replay and debugging capabilities have been enhanced with the ability to:
- Record the exact order in which processes altered shared memory variables. It is even possible to zero in on specific variables and skip backward to the last line of code in any process that altered the variable.
- Expose potential defects by randomizing thread execution to help reveal race conditions, crashes and other multi-threading defects.
- Record and replay the execution of individual Kubernetes and Docker containers to help resolve defects faster in microservices environments
The Undo LiveRecorder enables engineering teams to record and replay the execution of any software program -- no matter how complex -- and to diagnose and fix the root cause of any issue in test or production.
Depending on your license, LiveRecorder can be used on the command line with the live-record command that is somewhat similar to strace though, instead of printing system calls and signals, it creates an "Undo recording". Captured failings in recordings can then be debugged (far more effective than grappling with core dumps!). These recordings can also be can be shared with other members of the staff and can be replayed with the reversible debugger to further investigate the cause of the crash or other problem.
Read the full article on Network World