Re: Machine Check when booting dqa0?

On Mon, Oct 21, 2002 at 11:43:31AM -0400, Jameel Akari wrote:
> 
> On Sat, 19 Oct 2002, Josh Tolbert wrote:
> 
> >     All my drive problems went away when I used a different IDE cable.
> 
>       *blinks*  I've tried at least a half-dozen cables.  I haven't used
> a UDMA66 (80-conductor) cable because the CMD controller barely does
> UDMA/33, and I  don't think that I need a cable-select cable.  Same issue.
> I only get dqa0.  If you can find another cable to test a second device
> with, I'd really like to know if it works or not.
> 
> >     The IDE performance on this PC164 leaves much to be desired. I'm
> > going to have to toss a SCSI card in this thing and just go SCSI.
> 
>       Indeed.  I time it at 4.5MB/sec when forced to UDMA mode.  NFS
> over a 100Mb network will be almost twice as fast.

I'm seeing 13-14MB/s on my PC164 with the onboard controller.
ad0: 98166MB <IC35L100AVVA07-0> [199450/16/63] at ata0-master tagged WDMA2
ad1: 98166MB <IC35L100AVVA07-0> [199450/16/63] at ata1-master tagged WDMA2
The machine is running -current, but I don't think this should make
a factor 3 difference.

>       Incidentally, does anyone have a listing of third-party
> aftermarket SCSI controllers that get along with SRM?  I've tried two
> different Symbios controllers, and neither is compatible enough to be
> functional.  (Neither gives you dka* for disks; one lists as a NCR
> controller in show conf, the other is just a random PCI device number.)

Oliver Lehmann has setup a webpage with tested controllers.
http://www.pofo.de/alpha-boot/index.php?field=chipset

-- 
B.Walter              COSMO-Project         http://www.cosmo-project.de
ticso@xxxxxxxxx         Usergroup           info@xxxxxxxxxxxxxxxx


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