linux-kernel - Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's

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Date:	Tue, 29 Oct 2013 12:30:31 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Neil Horman <nhorman@...driver.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel@...r.kernel.org, sebastien.dugue@...l.net,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's


* Neil Horman <nhorman@...driver.com> wrote:

> Sure it was this:
> for i in `seq 0 1 3`
> do
> echo $i > /sys/module/csum_test/parameters/module_test_mode
> taskset -c 0 perf stat --repeat 20 -C 0 -ddd perf bench sched messaging -- /root/test.sh
> done >> counters.txt 2>&1
> 
> where test.sh is:
> #!/bin/sh
> echo 1 > /sys/module/csum_test/parameters/test_fire

What does '-- /root/test.sh' do?

Unless I'm missing something, the line above will run:

  perf bench sched messaging -- /root/test.sh

which should be equivalent to:

  perf bench sched messaging

i.e. /root/test.sh won't be run.

Thanks,

	Ingo
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