[linux-audio-user] Anyone using multiface+cardbus?

[R Parker]

Hi,

gentoo 1.4.3 or whatever the later release is
jackd 0.62.0
Ardour/GTK 0.334.0 running with libardour 0.643.2
jackd -R -v -d alsa -d hw:0 -p 64


I tested recording eight tracks of audio into Ardour
using "jackd -R -v -d alsa -d hw:0 -p 64". This
produced one xrun when disengaging record on the
transport.

Next test; one track of audio from Ardour to
freqtweak, back to ardour. Same jackd settings as
above.

One xrun while adding an xterm window.

Well, the obvious change from an environment that was
producing an endless stream of XRUNs to one which
looks encouraging is running jackd with --realtime
enabled. doh!

Jesse, if there's any other tests or whatever that
you'd like me to run so you have some reference for
your environment, let me know. I'll happily follow
your instructions.

ron

--- Jesse Chappell <jesse at essej.net> wrote:
> 
> On Sun, 23 Mar 2003, R Parker wrote:
> 
> > What do you make of my IRQs, they're not
> consistent
> > with what you're describing. Is this some newer
> bios
> > aipc feature?
> > 
> > The pci cards begin at 16 with two scsi controlers
> > sharing interupt 16, at 18 we see a third scsi
> > controler that isn't the same as the one on 16.
> It's
> > just the same driver.
> 
> Ron, my dual mobo (asus a7m266-d) (amd-762 chipset)
>  also uses this IRQ system.  As
> discussed before I thought I had tamed latency
> problems, but
> indeed I have not.   When I run this command while
> 'jackd -R' is
> running (and a client is connected) I get massive
> overruns on
> the order of 1-2 *seconds* every 5 seconds or so:
> 
>   dd if=/dev/zero of=/path/for/bigfile bs=1000
> count=1000000
>                                                     
>                                                     
>        
> This will write a one gig file as fast as possible. 
> My IDE
> drives are tuned properly with hdparm and I'm using
> SMP 
> 2.4.20 + LL + preemp + radeonDRM.  Also tried with
> 2.4.18 + LL.
> 
> $ cat /proc/interrupts
>            CPU0       CPU1
>   0:      59143      60400    IO-APIC-edge  timer
>   1:       1948       2013    IO-APIC-edge  keyboard
>   2:          0          0          XT-PIC  cascade
>   8:          1          1    IO-APIC-edge  rtc
>   9:          0          0    IO-APIC-edge  acpi
>  12:      12170      12203    IO-APIC-edge  PS/2
> Mouse
>  14:      12232      12459    IO-APIC-edge  ide0
>  15:         52        159    IO-APIC-edge  ide1
>  18:          0          0   IO-APIC-level  Ensoniq
> AudioPCI
>  19:       6613       6657   IO-APIC-level  eth0
> NMI:          0          0
> LOC:     119459     119465
> 
> (my AGP radeon7500 is on IRQ 16.. not shown above
> for some 
> reason).
> Although my BIOS allows me to specify IRQs for
> slots, the numbers 
> there match the traditional style... not this >16
> stuff.  I tried 
> anyway, but no change in linux.
> 
> I just tried this test on another system, this one
> UP 2.4.20 + 
> LL, similar results.  Anyone else care to try this
> informal 
> disk-loading test?   If you have >= 1G of memory,
> use a 
> count=2000000 (2GB file).
> 
> jlc
> 
> 
> 
> 


__________________________________________________
Do you Yahoo!?
Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop!
http://platinum.yahoo.com