3 Jan
2004
3 Jan
'04
9:30 a.m.
I think you should try to turn acpi off. Where is your sound card in
terms of interrupts? Take a look at:
http://myweb.cableone.net/eviltwin69/Arcana.html#IRQs
If your sound card IRQ is not on 9 then interrupts on your SCSI card are
going to give you xruns since 10 is higher priority than everything else
(unless you can get 0, 1, or 8).
Jan
On Sat, 2004-01-03 at 01:54, John Anderson wrote:
On Fri, 2004-01-02 at 14:47, Jan Depner wrote:
This may sound strange but there have been
reports of problems using
SCSI disk drives. IIRC it had something to do with the Adaptec (29160)
controllers.
Did some searching on google for this, but I can't find anything that
looks useful. Did some checking on the drive though, and it has claimed
seek times of 5 ms, just a bit slower than the 15000rpm seagate cheetah.
A really good article on SCSI vs IDE is at
http://www.prorec.com/prorec/articles.nsf/articles/1A37C1C69674D6D786256950…
Some of that article may come as a shock to hard-core SCSI fans ;-) I'm
running - 2.4.22 lowlat/preempt, uniprocessor AthlonXP 1700+, 512MB RAM,
60GB ATA 100 5400rpm Maxtor IDE disk drive (data drive only), AZZA KT3AV
KT133A Socket A motherboard, ST Audio (Hoontech) C-Port DSP2000 on IRQ
10 (not shared, IRQ 9 is unused), reiserfs. I hardly ever get any xruns
on this system so I'm pretty amazed that you're getting them. What does
your interrupt setup look like? I don't remember if we'd already
covered the interrupts before. Do lspci -vvv and make sure that you're
using IRQ 9 or 10 (or possibly 11) and it's not shared.
OK, I've argued with the motherboard now, and after several hours I've
convinced it to put the 29160 on IRQ 10, by itself. Previously it was on
RQ 10, sharing with one of the 3 (three!) USB controllers. IRQ 9 seems
to be locked to "acpi" by the motherboard - doesn't handle any
interrupts according to /proc/interrupts though. Still getting the xruns
as often as before, but they sound different - not as long or intense.
Hah. This is the first time I've discussed IRQs in terms of how they
sound ;-)
bye
John