[PlanetCCRMA] emi 2|6 usb performance

[Mark Knecht]

Ryan,
   It could contribute, but probably not. Try simply unplugging your
Ethernet cable (as an experiment) and doing some audio work. If the
problems go away, or are reduced, then you'r eon to it. I would guess
that they will not go away though.

   Do you always get xruns, or only when recording or playing back? If
so, the problem could really be your disk subsystem.

   You snipped out the other interrupts. Possibly you can post the whole
list. IRQ5 is not a very good interrupt for anything that needs real
time support.

Mark


On Sat, 2002-12-28 at 13:22, Ryan Gallagher wrote:
> Hi all,
> 
> I've been searching for optimal settings that will rid
> my life of xruns and latency on my emagic emi 2|6
> equipped system.  I've had some success and some
> failures.  I still get xruns out the wazoo however
> which ain't good obviously.  Here's my
> question/hypothesis;
> 
> cat /proc/interrupts reveals that the usb hub and my
> ethernet card are sharing irq 5 (this is a mainboard
> issue that I have found no solution to).
> 
>            CPU0
>   0:      10177          XT-PIC  timer
>   1:         47          XT-PIC  keyboard
>   2:          0          XT-PIC  cascade
>   5:        369          XT-PIC  usb-uhci, eth0
>   8:          1          XT-PIC  rtc
> 
> Could this little resource sharing arrangement
> contribute to the above listed issues?  Anyone out
> there use snd-usb-audio alsa drivers?  Share your
> thoughts.
> 
> later-
> -ryan
> 
> =====
> --r--
> 
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