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SubjectRe: [PATCH 0/6] perf tools: Add wallclock time conversion support
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On 7/30/20 4:14 PM, peterz@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.

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