Re: I/O Scheduling results in poor responsiveness

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To: For users of Fedora <fedora-list@xxxxxxxxxx>
Subject: Re: I/O Scheduling results in poor responsiveness
From: Nathan Grennan <fedora-list@xxxxxxxxxxxxx>
Date: Wed, 05 Mar 2008 10:17:30 -0800
In-reply-to: <47CEA362.1000502@xxxxxxxxx>
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References: <47CE4DBB.2050304@xxxxxxxxxxxxx> <47CEA362.1000502@xxxxxxxxx>
Reply-to: For users of Fedora <fedora-list@xxxxxxxxxx>
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Les Mikesell wrote:

Can you compare to systems with SCSI drives? I think this is tellingyou that your disk controller is eating all the CPU when thecontroller and DMA should be doing all the work.

Are you saying you think that the controller isn't using DMA? Youthink the controller or driver is just poorly written?

I will try a SCSI system, but the closest I have is a CentOS 4.6machine, which using a kernel based on 2.6.9. It is also a server, so Ican't run firefox, thunderbird, xchat, or pidgin on it.

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