From: Ingo Molnar <mingo@elte.hu>
To: Lin Ming <ming.m.lin@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] perf probe: Add fastpath to do lookup by function name
Date: Thu, 24 Mar 2011 09:47:17 +0100 [thread overview]
Message-ID: <20110324084717.GG30812@elte.hu> (raw)
In-Reply-To: <1300955923.14111.29.camel@minggr.sh.intel.com>
* Lin Ming <ming.m.lin@intel.com> wrote:
> ./perf stat -r 10 -- ./perf probe -k /home/mlin/vmlinux \
> -s /home/mlin/linux-2.6 \
> --line csum_partial_copy_to_user > tmp.log
>
> before patch applied
> =====================
> 364.535892 task-clock-msecs # 0.997 CPUs
> 865,862,109 cycles # 2375.245 M/sec
> 1,255,259,630 instructions # 1.450 IPC
> after patch applied
> =====================
> 89.896405 task-clock-msecs # 0.991 CPUs
> 214,553,875 cycles # 2386.679 M/sec
> 226,915,559 instructions # 1.058 IPC
That's a very nice speedup :-)
Thanks,
Ingo
next prev parent reply other threads:[~2011-03-24 8:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 15:38 [PATCH] perf probe: Add fastpath to do lookup by function name Lin Ming
2011-03-24 7:58 ` Ingo Molnar
2011-03-24 8:38 ` Lin Ming
2011-03-24 8:47 ` Ingo Molnar [this message]
2011-03-24 9:08 ` Masami Hiramatsu
2011-03-24 13:47 ` Lin Ming
2011-03-24 14:09 ` [PATCH v2 -tip] " Lin Ming
2011-03-25 1:14 ` Masami Hiramatsu
2011-03-25 2:57 ` Arnaldo Carvalho de Melo
2011-03-25 6:33 ` Lin Ming
2011-03-25 8:30 ` Lin Ming
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