Message-ID: <508AA709.7010202@gmail.com>
Date: Fri, 26 Oct 2012 09:06:49 -0600
From: David Ahern <dsahern@gmail.com>
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To: Ingo Molnar <mingo@kernel.org>
CC: Arnaldo Carvalho de Melo <acme@infradead.org>,
        linux-kernel@vger.kernel.org, Andrew Vagin <avagin@openvz.org>,
        Borislav Petkov <bp@amd64.org>, David Howells <dhowells@redhat.com>,
        Frederic Weisbecker <fweisbec@gmail.com>, Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>, Paul Mackerras <paulus@samba.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Stephane Eranian <eranian@gmail.com>,
        Steven Rostedt <rostedt@goodmis.org>, arnaldo.melo@gmail.com,
        Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: Re: [GIT PULL 0/9] perf/core improvements and fixes
References: <1351261913-28250-1-git-send-email-acme@infradead.org> <20121026145451.GA14379@gmail.com>
In-Reply-To: <20121026145451.GA14379@gmail.com>
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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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