linux-kernel - Re: [GIT PULL 0/9] perf/core improvements and fixes

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Message-ID: <508AA709.7010202@gmail.com>
Date:	Fri, 26 Oct 2012 09:06:49 -0600
From:	David Ahern <dsahern@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	linux-kernel@...r.kernel.org, Andrew Vagin <avagin@...nvz.org>,
	Borislav Petkov <bp@...64.org>,
	David Howells <dhowells@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>, arnaldo.melo@...il.com,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 0/9] perf/core improvements and fixes

On 10/26/12 8:54 AM, Ingo Molnar wrote:
>> perf/core improvements:
>>
>> . perf inject changes to allow showing where a task sleeps, from Andrew Vagin.
>>
>> . Makefile improvements from Namhyung Kim.
>
> These are really useful: there used to be a couple of seconds of
> wait time at the beginning of every perf build - these are now
> nicely explained with the various CHK entries.

PERF-VERSION-GEN and specifically the git commands are the cause of more 
delay than the config checks, especially when doing the build in a VM 
with the kernel source on an NFS mount.

David
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