Yes, although your debug experience will be the same as using regular debuggers on optimised code.
Yes, you can ship or deploy a Live Recorder enabled application without debug information. Load the recording and point at a version of the binary with the debug information to get full source-level debugging.
Live Recorder typically causes programs to experience a 2-3x slowdown. This can be more or less, depending on the individual situation.
Spatial requirements vary hugely depending on the program, but typically a few megabytes per second of recording.
Yes. Live Recorder uses a circular event log so old history is discarded. Due to the performance overheads however, most of our customers do not run their programs with Live Recorder always on, but have a way to enable or disable recording as required.
Yes. As long as both the record and replay machines are running Linux and use the same CPU architecture, it's fine. However, you can't replay ARM recordings on x86. Live Recorder is not a simulator, so your replay machine CPU must support all of the instructions used on the recording machine. E.g. if your program uses AVX instructions when the recording is made then you must replay on a machine with a CPU that has AVX support.
Live Recorder is enabled simply by calling the undodb_recording_start() function.
Yes. Just by calling the undodb_recording_stop() function.
The recording is saved to a file on the local filesystem. The recording is generated when you call the undodb_save() function, or, if so-configured, when the program terminates.
The recording contains the program starting state, all non-determinstic inputs, any debug information files and all libraries used by the program are all contained in the recording. It is completely self-contained.