linux-kernel - Re: pdflush preemption

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Message-Id: <1188311169.2435.279.camel@dhcp193.mvista.com>
Date:	Tue, 28 Aug 2007 07:26:08 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	John Sigler <linux.kernel@...e.fr>
Cc:	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: pdflush preemption

On Tue, 2007-08-28 at 12:39 +0200, John Sigler wrote:

> Why does pdflush kick in to ruin my party? :-)
> The expected latency is ~600 µs.
> http://linux.kernel.free.fr/latency/pdflush.trace
> Does ide_inb mean I'm reading from the disk?

Does your real time application lock it's memory, or allow itself to be
swapped?

Daniel

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