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From: "Vitezslav Samel" <samel@mail.cz>
Date: Wed, 26 Mar 2003 07:56:50 +0100
To: Alan Cox <alan@redhat.com>, Andre Hedrick <andre@linux-ide.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [IDE SiI680] throughput drop to 1/4
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On Tue, Mar 25, 2003 at 08:06:05AM +0100, Vitezslav Samel wrote:
> On Mon, Mar 24, 2003 at 07:13:06AM -0500, Alan Cox wrote:
> > >   Recently I tried to figure out in 2.5.65, why throughput on my disk which
> > > hangs on Silicon Image 680 dropped to 1/4 compared to 2.4.21-pre5, but didn't
> > > found anything useful. Are there any known issues with this driver?
> > 
> > The same code in both cases. Its quite likely the problem is higher up in
> > the block or filesystem layer. It might also be a general IDE layer bug
> > 
> > What does performance look like on your other disk between
> > 2.4.21pre/2.5.65 ?
> 
>   Will test it as I come back home (it's on my home machine). But I think this
> performance drop is only on the SiI680 interface.

  Tested today: on the other disk on integrated interface (piix) is throughput
exactly the same on both kernels.

	Cheers,
		Vita
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