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Date: Wed, 12 May 2010 14:18:08 -0700 From: Taras Glek <tglek@...illa.com> To: Frederic Weisbecker <fweisbec@...il.com> CC: lkml <linux-kernel@...r.kernel.org> Subject: Re: How to use perf to log page faults 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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