1 Oct
2007
1 Oct
'07
3:44 p.m.
Thank you for your interesting answers. I am of course
a bit disappointed, but at least I won't waste any more time.
As far as I could check, working on the SATA Raid5
(audio data), and not asking much to the SCSI Raid1
(system) does work for me. No xruns, etc. I will keep it
that way as long as I can use it reliably.
Thank you!
Romain
John Anderson wrote:
On Sun, 2007-09-30 at 17:04 +0200, Romain Bossart
wrote:
I forgot to mention that my audio card does not
share
its IRQ with aic7xxx.
Romain Bossart wrote:
> Hi,
>
> I have many xruns when I read/write files on my SCSI
> disks. The suspected module is aic7xxx. I read a thread
> on LAU ('xrun madness') about this, but it dates back
> to 2004 and gives no solution. This problem does not
> occur with my other SATA drives. Could someone give me
> advices to troubleshoot this?
>
>
> Details:
>
> I have an Adaptec 39160 controller and 2 disks
> in a RAID1 (software) array. The module is aic7xxx.
> My filesystem is ext3. I use debian/unstable with a 2.6.22
> RT kernel and RTirq. I tweaked my PCI latencies to 0
> for the Adaptec PCI bus using setpci.
>
> Jackd being launched RT, I have no xruns with
> journalling operations or updatedb. But moderately
> intense operations on this array do cause many many xruns:
> for instance loading files into memory (launching
> firefox, or apt-get update, or copying files).
> Of course, recording music with Ardour causes
> many xruns too.
>
> Quite surprisingly (for me), I have no xruns when
> using my other SATA RAID5 (software) array, even
> very intensively.
I had exactly this trouble with an Adaptec 29160 when I moved from a
dual-processor motherboard to a single-processor (about 4 years ago). I
eventually gave up and bought an IDE drive. I've since moved to a dual
core, with a SATA drive.
bye
John