Hi, also after fixing this issue my bootstrap failes with: Permission error mapping pages. Consider increasing /proc/sys/kernel/perf_event_mlock_kb, or try again with a smaller value of -m/--mmap_pages. (current value: 4294967295,0) Permission error mapping pages. Consider increasing /proc/sys/kernel/perf_event_mlock_kb, or try again with a smaller value of -m/--mmap_pages. (current value: 4294967295,0) Permission error mapping pages. Consider increasing /proc/sys/kernel/perf_event_mlock_kb, or try again with a smaller value of -m/--mmap_pages. (current value: 4294967295,0)
this happens on my setup when perf is run multiple times in parallel and bootstrapping without -j256 indeed continues (but slowly). Since perf record overwrites the previous perf data, I wonder if this also implies that we lose the profile info due to race conditions? Honza
