Subject: Re: I think the SCSI-DMA problem just went away!
To: Daniel A. Seagraves <DSEAGRAV@toad.xkl.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-vax
Date: 06/27/1998 13:18:45
On Sat, 27 Jun 1998 13:26:21 -0700 
 "Daniel A. Seagraves" <DSEAGRAV@toad.xkl.com> wrote:

 > OK.  I was compiling a kernel.  I was rooted on a 200MB SCSI1 device.
 > I got DMA errors all the time.  I rerooted on a 1GB SCSI2 device.
 > Got less scsi errors.  (I was swapping off the 200MB device).
 > Got curuios.  Rebooted, started swapping off a 8Mb swapfile on the SCSI2 device.
 > It's been going for about 40 minutes, without a SCSI error yet!
 > Can anyone duplicate this?

Perhaps the faster disk keeps DMA underruns/overruns from happening?

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                            Home: +1 408 866 1912
NAS: M/S 258-5                                       Work: +1 650 604 0935
Moffett Field, CA 94035                             Pager: +1 650 428 6939