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

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Date:	Thu, 6 Oct 2011 17:25:08 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	acme@...hat.com, ming.m.lin@...el.com, andi@...stfloor.org,
	robert.richter@....com, ravitillo@....gov
Subject: Re: [PATCH 00/12] perf_events: add support for sampling taken branches


Thanks very nice patchkit (at least from the description,
haven't read it yet)

> # 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.

-Andi
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