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Re: kernel upgrade

On Mon 12 Aug 2019, Ryan Kirkpatrick wrote:
> On Fri, 9 Aug 2019, Ryan Kirkpatrick wrote:
> > 	So, 2.2.9 is not a lost cause for all Alphas, just some it
> > appears. Oh, I am running stock Debian 2.1 on my XLT 366. TTYL.	
> 	Well, it looks like I need to eat some crow here... 2.2.9 is not a
> good idea for my Alpha XLT at the very least. While large compilies
> (kernel included) work fine, the scsi subsystem has a bit of a temper. I
> attempted to do a copy of 500MB (mostly small to medium sized files) from
> a single disk to a three disk RAID-0 device, all on the same SCSI
> controller. Took the system less than a minute to blow up and crash hard. 
> 	Also, don't even think about upgrading to 2.2.11... On boot up the
> scsi subsystem caused a kernel panic/fault and things were downhill from
> there.

I've been running 2.2.13 for some time now on my XLT 366 without any

> 	I would heed the earlier recommendation to use 2.2.5. It appears
> nice and stable. I was able to do the above mentioned copy twice in a row
> with out a single problem. Got an average transfer rate of ~2.6 MB/sec,
> which is pretty good considering the source (single disk). Now to see how
> the kernel deals with a CD-R. :)

I've recently added a Qlogic 1040 card and an IBM DPES 9 gig U2W disk
(running in UW mode).  Bonnie tells me I get a write throughput of
19.9MB/s and read throughput of 16MB/s. I'm happy :-)

I also have Seagate Barracuda 4GB on the onboard scsi (symbios 810), and
while I don't have exact numbers handy, I'm sure I get more than 6MB/s
on that.

> 	Hardware specs are XLT 366, 192MB RAM, 6 Fast SCSI disks on an
> AHA2940, 1 Fast SCSI, 3 CD-ROMs, and 1 tape drive (soon to include a CD-R)
> on a NCR8xxx controller (on-board). And yes, most of the SCSI drivers are
> in a seperate case from the rest of the system.

I was wondering how you got all of that into the case :-)
FYI, I've added an extra fan (stuck onto the plastic funnel thing) to
cool the CPU heatsink more; it was getting unbelievably hot and I've
already blown one CPU card ... Now it's lukewarm.

Paul Slootman
home:       paul@wurtel.demon.nl http://www.wurtel.demon.nl/
work:       paul@murphy.nl       http://www.murphy.nl/
debian:     paul@debian.org      http://www.debian.org/
isdn4linux: paul@isdn4linux.de   http://www.isdn4linux.de/

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