Re: How to use perf to log page faults

[Taras Glek]

On 05/12/2010 12:59 PM, Frederic Weisbecker wrote:
> On Wed, May 12, 2010 at 12:38:30PM -0700, Taras Glek wrote:
>    
> > Hi,
> >  From the docs it seems that perf may be useful for logging page faults.
> > I tried
> > perf record -g -d -f -e page-faults<mycommand>
> > but all I got were PERF_RECORD_MMAP events.
> >
> > I'm using 2.6.32. Ideally I'd like to collect fault addresses and
> > userspace stacks that caused them. Isn't this what the page-fault event
> > is for?
> >
> > Taras
> >      
>
> Could you try with -c 1 ?
>
> Otherwise, does that work on the latest kernel?
>    
this just gets me PERF_RECORD_SAMPLE events which don't seem to be 
related to page-faults(ie they show up with/without -e page-faults).

I don't have the latest kernel installed here. Can you get perf 
page-fault events on your system?

Taras

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