On 7/30/20 4:14 PM, pet...@infradead.org wrote: > On Thu, Jul 30, 2020 at 11:39:44PM +0200, Jiri Olsa wrote: > >> The patchset is adding the ability to display TOD/wallclock timestamp >> in 'perf script' output and in 'perf data convert --to-ctf' subcommand, >> so the converted CTF data contain TOD/wallclock timestamps. > > But why? Wallclock is a horrible piece of crap. Why would you want to do > this? >
Same reason I brought this up 9+ years ago: userspace lives on time-of-day, and troubleshooting is based on correlating timestamps from multiple sources. To correlate a perf event to syslog or an application log, we need time-of-day.
