From: Jiri Olsa <jolsa@redhat.com>
To: "Wangnan (F)" <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [RFC 6/6] perf build: Introduce FEATURES_DUMP make variable
Date: Wed, 13 Jan 2016 13:15:20 +0100 [thread overview]
Message-ID: <20160113121520.GA28969@krava.brq.redhat.com> (raw)
In-Reply-To: <56963CD0.7020105@huawei.com>
On Wed, Jan 13, 2016 at 08:02:24PM +0800, Wangnan (F) wrote:
>
>
> On 2016/1/13 18:03, Jiri Olsa wrote:
> >On Wed, Jan 13, 2016 at 05:46:13PM +0800, Wangnan (F) wrote:
> >
> >SNIP
> >
> >>>I'll try to check on that.. does this patch help to improve
> >>>the current speed or do you need to solve this to get substantial
> >>>speedup?
>
> Finished.
>
> On a 24 core machine:
>
> Without this feature, a full build-test takes:
>
> real 21m16.579s
> user 176m12.989s
> sys 20m54.950s
>
> With this feature:
>
> real 16m0.619s
> user 172m53.896s
> sys 19m22.777s
>
> Speedup: 24.75%.
>
> So this feature is really useful.
looks great, thanks
jirka
prev parent reply other threads:[~2016-01-13 12:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 10:54 [PATCH 0/6] tools: Add clean targets for tools directory Jiri Olsa
2016-01-11 10:54 ` [PATCH 1/6] " Jiri Olsa
2016-01-12 10:06 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2016-01-11 10:54 ` [PATCH 2/6] tools bpf: Add *.cmd files clean up Jiri Olsa
2016-01-12 10:07 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2016-01-11 10:54 ` [PATCH 3/6] tools lockdep: " Jiri Olsa
2016-01-12 10:07 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2016-01-11 10:54 ` [PATCH 4/6] perf tools: Add missing sources in perf's MANIFEST Jiri Olsa
2016-01-12 10:07 ` [tip:perf/urgent] perf tools: Add missing sources to perf' s MANIFEST tip-bot for Jiri Olsa
2016-01-11 10:54 ` [RFC 5/6] perf build: Add feature-dump target Jiri Olsa
2016-01-11 10:54 ` [RFC 6/6] perf build: Introduce FEATURES_DUMP make variable Jiri Olsa
2016-01-12 9:28 ` Wangnan (F)
2016-01-13 9:19 ` Jiri Olsa
2016-01-13 9:46 ` Wangnan (F)
2016-01-13 10:03 ` Jiri Olsa
2016-01-13 10:11 ` Wangnan (F)
2016-01-13 12:02 ` Wangnan (F)
2016-01-13 12:15 ` Jiri Olsa [this message]
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