linux-kernel - Re: ptrace performance

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Message-ID: <49C51DBE.4000403@googlemail.com>
Date:	Sat, 21 Mar 2009 18:02:54 +0100
From:	Michael Riepe <michael.riepe@...glemail.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Miklos Szeredi <miklos@...redi.hu>
Subject: Re: ptrace performance



Ingo Molnar wrote:

> that's almost certainly due to the wait_task_inactive() change. Does 
> the patch below improve things?

That makes it *much* better - dd reports more than 3 GB/s on the Core
Duo. I'll have to check the other systems later; they're busy at the moment.

-- 
Michael "Tired" Riepe <michael.riepe@...glemail.com>
X-Tired: Each morning I get up I die a little
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