linux-kernel - Re: [PATCH 00/12] perf_events: add support for sampling taken branches

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Message-ID: <CABPqkBTRDesV-0caMpWSnuYrSppfntUzt+NmPPdYUXdXsv+Ygg@mail.gmail.com>
Date:	Fri, 7 Oct 2011 12:23:40 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	acme@...hat.com, ming.m.lin@...el.com, robert.richter@....com,
	ravitillo@....gov
Subject: Re: [PATCH 00/12] perf_events: add support for sampling taken branches

On Thu, Oct 6, 2011 at 5:25 PM, Andi Kleen <andi@...stfloor.org> wrote:
>
> Thanks very nice patchkit (at least from the description,
> haven't read it yet)

Thanks.

>
>> # Overhead  Source Symbol     Target Symbol
>> # ........  ................  ................
>>
>>     18.13%  [.] f1            [.] main
>>     18.10%  [.] main          [.] main
>>     18.01%  [.] main          [.] f1
>
> The big problem here is no line numbers (something I miss for other analysis
> too).  I hope that can be fixed so that analysis inside functions becomes
> possible. Something similar to pprofs line mode.
>
You get line numbers with annotate only today so this is not specific to this
particular patch. But yeah, it would be nice.
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