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Date:      Tue, 17 Mar 2009 08:57:06 +0100
From:      Hans Petter Selasky <hselasky@c2i.net>
To:        freebsd-usb@freebsd.org
Subject:   Re: Xorg 7.4 and umass devices - a bad combination?
Message-ID:  <200903170857.07049.hselasky@c2i.net>
In-Reply-To: <20090316231513.208750bf.torfinn.ingolfsen@broadpark.no>
References:  <20090316205626.b0ed5027.torfinn.ingolfsen@broadpark.no> <20090317.050116.76561605.imp@bsdimp.com> <20090316231513.208750bf.torfinn.ingolfsen@broadpark.no>

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On Monday 16 March 2009, Torfinn Ingolfsen wrote:
> On Tue, 17 Mar 2009 05:01:16 +0900 (JST)
>
> "M. Warner Losh" <imp@bsdimp.com> wrote:
> > In message: <20090316205626.b0ed5027.torfinn.ingolfsen@broadpark.no>
> >
> >             Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> writes:
> > : Have anyone seen bad performance when using umass devices (external
> > : hard drives) in combination with Xorg 7.4?
> >
> > I don't see it.
> >
> > But I'm not using a usb mouse/keyboard...  Are you?
>
> No, I am not. PS/" mouse and keyboard here.
>
> This is very strange, very puzzling.

It's maybe an interrupt problem. Can you do some vmstat'ing before and after ?

Also try to upgrade the kernel to the lastest sources. There has been an EHCI 
performance quirk added recently.

--HPS


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