From: Mike Fedyk <mfedyk@matchmail.com>
To: "Francis, Chong Chan Fai" <francis.ccf@polyu.edu.hk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: USB 2.0 mass storage problem
Date: Sun, 8 Feb 2004 01:08:30 -0800 [thread overview]
Message-ID: <20040208090830.GC18674@srv-lnx2600.matchmail.com> (raw)
In-Reply-To: <200402080657.i186v7p10163@mailgate01.ctimail.com>
On Sun, Feb 08, 2004 at 02:58:17PM +0800, Francis, Chong Chan Fai wrote:
> > Probably a problem with pcmcia.
>
> > I've used a usb 2.0 pci card, but the cpu usage is so high that it's just
> as
> > fast as the same card using the uhci-hcd driver -- and uhci uses *much*
> > less cpu.
>
> Thank you for your reply.
>
> I don't have the performance problem with USB2.0, it read a file lightning
> fast (compare with USB 1.0), but just hang shortly after a few files.
It was a pII 300... not a dino, but getting old.
>
> I using USB 1.0 as a work around, but my disk is 120G and the speed is
> terrible.
>
> Because the command " lspci " show the PCMCIA bus correctly, I didn't
> thought it could be a problem. If it is the case, what can I do?
Can you run "dd < /dev/sda > /dev/null" on the usb drive without a hang/crash?
Turn on the nmi_watchdog. There is documentation in the kernel source
tree, and on the web...
next prev parent reply other threads:[~2004-02-08 9:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-08 6:11 Francis, Chong Chan Fai
2004-02-08 6:34 ` Mike Fedyk
2004-02-08 6:58 ` Francis, Chong Chan Fai
2004-02-08 9:08 ` Mike Fedyk [this message]
2004-02-08 11:24 ` Måns Rullgård
2004-02-08 12:15 ` Francis, Chong Chan Fai
2004-02-08 13:07 ` Måns Rullgård
2004-02-09 11:37 ` Francis, Chong Chan Fai
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