[linux-audio-user] Interuptions While Recording

[linuxmedia4 at netscape.net]

>> Mark Knecht <mknecht at controlnet.com> Wrote:
>> Rocco,
>> Hi. Why all the focus on the disk drive side only? There's
>> also a good chance that the sound card is not getting serviced
>> and this causes the interruption.
>>
>> Things to think about and look for:
>>
>> 1) Interrupts are not set up well

> Someone on this list mentioned an article that you wrote about
> IRQ priority ordering and Latency using lspci.
<CHOP>
> This time I used the correct keywords and it took me right
> to the HOWTO.
<CHOP>
> I will work with that and see if that has an effect on the situation.

I read the article, and did "cat /proc/interrupts" and got the 
following:

           CPU0       
  0:      30093          XT-PIC  timer
  1:        356          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  8:          2          XT-PIC  rtc
 11:      21919          XT-PIC  EMU10K1
 12:         73          XT-PIC  usb-ohci, usb-ohci
 14:      12651          XT-PIC  ide0
 15:         15          XT-PIC  ide1
NMI:          0 
LOC:          0 
ERR:          0
MIS:          0

>From what I read from the article, (and the little understanding I have 
about this subject)  nothing seemed unusual. With the  exception of the 
non-PCI slot IRQ's, the Sound Card appears to be before all others.

The article talks about some IRQ's being shared. Would that be 
reflected in the output of "cat /proc/interrupts"?

Before I switched my Sound Card to another slot, I thought I would 
disable USB in the BIOS since it's just being used for the mouse. I'm 
now using a ps mouse.

after booting up and doing "cat /proc/interrupts" I got the following:

           CPU0       
  0:      25160          XT-PIC  timer
  1:        542          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  8:          2          XT-PIC  rtc
 11:          0          XT-PIC  EMU10K1
 14:       7620          XT-PIC  ide0
 15:         15          XT-PIC  ide1
NMI:          0 
LOC:          0 
ERR:          0
MIS:          0

Even though there was no indication that the Interuptions (while 
recording) would stop, I still tried recording. I got the usual 
interruptions.

Then I switched the sound card to the other PCI slot. There's only 2 
PCI slots because the Mother Board came with onboard this and onboard 
that (all of which I don't use and have disabled in the BIOS).

The other thing is that there's _nothing_ in the other PCI slot. But I 
put it in the other slot anyways. And as you can guess, I got the same 
results from "cat /proc/interrupts".

All I can think of is that there may be a reason why my Mother Board 
was inexpensive. Maybe it's time to buy a new Mother Board.

Can anyone think of any other solution?'

Thanks,
Rocco


__________________________________________________________________
The NEW Netscape 7.0 browser is now available. Upgrade now! http://channels.netscape.com/ns/browsers/download.jsp 

Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/