Re: [RFC][PATCH 1/2] perf: Add 'perf kmem' tool

Li Zefan
2009-11-20T08:54:14Z

Pekka Enberg wrote:
> Ingo Molnar kirjoitti:
>> Regarding patch 2 - can we set some definitive benchmark threshold for
>> that? I.e. a list of must-have features in 'perf kmem' before we can
>> do it? 100% information and analysis equivalency with kmemtrace-user
>> tool?
>
> I'd be interested to hear Eduard's comment on that.
>
> That said, I'll try to find some time to test "perf kmem" and provide
> feedback on that. I can ACK the patch when I'm happy with the output. :-)
>
> I'm mostly interested in two scenarios: (1) getting a nice report on
> worst fragmented call-sites (perf kmem needs symbol lookup) and

This will be done in next version.

> (2) doing "perf kmem record" on machine A (think embedded here) and then
> "perf kmem report" on machine B. I haven't tried kmemtrace-user for a
> while but it did support both of them quite nicely at some point.
>

Everything needed and machine-specific will be recorded in perf.data,
so this should already been supported. I'll try it.