linux-kernel - Re: unresponsiveness on linux desktop during file copy

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Date:	Fri, 15 May 2009 19:47:43 -0700
From:	Mark Knecht <markknecht@...il.com>
To:	Satish Eerpini <eerpini@...il.com>
Cc:	Rik van Riel <riel@...hat.com>, Ray Lee <ray-lk@...rabbit.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: unresponsiveness on linux desktop during file copy

On Fri, May 15, 2009 at 7:38 PM, Satish Eerpini <eerpini@...il.com> wrote:
<SNIP>
> yeah I get similar numbers even in the absence of the desktop manager
> , when I tried to copy from  a virtual console.
> the stats look something like this :
<SNIP>
> 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family)
> SATA IDE Controller (rev 01)
<SNIP>

I googled on "82801GBM/GHM slow" and found a lot to read.

Is DMA for this drive enabled? It seems that some others didn't have
it enabled by default, or maybe at all. I didn't real the threads very
far.

hdparm -d1 /dev/sda

I think hdparm works for most SATA drivers. man sata to see the other
things you can check in terms of configuration.

Clearly, since you see the same thing in a console with X never having
been started says it's not a GUI issue.

Hope this helps,
Mark
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