Re: [Xen-devel] Disk schedulers

To:	Pasi Kärkkäinen <pasik@xxxxxx>
Subject:	Re: [Xen-devel] Disk schedulers
From:	Paresh Nakhe <paresh.nakhe@xxxxxxxxx>
Date:	Fri, 4 Feb 2011 21:04:42 +0530
Cc:	xen-devel@xxxxxxxxxxxxxxxxxxx
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I was talking about dom0 here. We know that IO schedulers can be switched at runtime. They are not fixed at compile time configuration.

After going through the code for IO schedulers, we realized that these were actually modules. If this is the case, we should be able to see them in /proc/modules which is not happening.

Paresh

On Fri, Feb 4, 2011 at 8:41 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

On Fri, Feb 04, 2011 at 06:00:34PM +0530, Paresh Nakhe wrote:
> We are working on a project to improve the disk performance. We saw that
> the IO schedulers are implemented as modules.
> However, we cannot find them in /proc/modules. Can anyone tell why this is
> so.
>
> We want to change a few things in these modules and test the performance
> by reinserting them. Are we missing something??
>

IO schedulers (elevators) are *Linux* kernel feature,
so the question is how did you configure the *Linux* kernel you're using?

Are we talking about dom0 or domU here?

-- Pasi

--
What I have is not a dream, because I will make it a reality.

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Re: [Xen-devel] Disk schedulers