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
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