Binary package “rr” in ubuntu disco

application execution recorder, player and debugger

 rr allows application executions to be recorded and then replayed
 with gdb as many times as desired.
 This allows intermittent, or complex to reproduce, bugs to be
 captured and then debugged at leisure. Replays are deterministic,
 always identical from one run to another.
 rr is incompatible with ptrace hardening, and currently only supports
 Intel CPUs with Nehalem or later microarchitectures. The amd64
 package supports debugging amd64 and i386 binaries.