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RE: XFS "freezes" on AMD systems

To: "Vincent Janelle" <random@xxxxxxxxxxxxxxxxx>, "Bernhard Erdmann" <be@xxxxxxxxxxx>
Subject: RE: XFS "freezes" on AMD systems
From: "Hundstad, Jeffrey E." <jeffrey.hundstad@xxxxxxxx>
Date: Wed, 25 Sep 2002 18:51:50 -0500
Cc: <linux-xfs@xxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
Thread-index: AcJk5lDZAU+iZ+ngRmu4dKL2GqyK6wAB4DWH
Thread-topic: XFS "freezes" on AMD systems
Also with hdparm you'll want to set the "multiple sector count" and turn off 
write caching.  Here's the steps:

hdparm -i /dev/hd?

Look for the MaxMultSect number.

hdparm -W0 -c1 -d1 -u1 -m XX /dev/hda?  # where XX is the MaxMultSect number

-----Original Message-----
From:   Vincent Janelle [mailto:random@xxxxxxxxxxxxxxxxx]
Sent:   Wed 9/25/2002 5:52 PM
To:     Bernhard Erdmann
Cc:     linux-xfs@xxxxxxxxxxx
Subject:        Re: XFS "freezes" on AMD systems
irrelevant and flamebait.

Proper tuning of DMA settings will help, as well as making sure that using the 
correct IDE driver is selected.

hdparm -c1 -d1 -u1 /dev/hd[a,b,c,etc] will turn on 32bit write support, dma, 
and unmasked irq's.  

man hdparm of course before doing any of this, YMMV.

On Thu, 26 Sep 2002 00:33:37 +0200
Bernhard Erdmann <be@xxxxxxxxxxx> wrote:

> Matthias Klose wrote:
> [...]
> >>>When unpacking large tarballs or copying data bigger than 20MB on a
> >>>XFS file system, the system seems to freeze for about three to five
> >>>seconds
> [...]
> >>hdparm(8) may help here, or you may beed to recompile the kernel with
> >>different IDE chipset support[1].
> [...]
> > Thanks for the pointer! That fixed my setup.
> Use SCSI. Use SCSI. Use SCSI. Use...

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