[PD] Tuning PD with 2.6.9-rc3-mm3-VP-T3-x86_64-k8

[cdr]

On Fri, Oct 15, 2004 at 07:47:27PM -0600, thewade wrote:
> I just got 2.6.9-rc3-mm3-VP-T3 running on my AMD64 laptop. I was told some people are opperating their machines with jack running at 64 frames of buffer. My jackd statement looks like this:
> sudo jackd -R -d alsa -d hw:1 -r 48000 -p 256
> anything less than 256 causes xruns just when I move the mouse around...
> 
> When I run medium sized patches I get errors like A/D/A Sync: What causes these errors? When I run large patches jackd says something like delay of xxxx usec spare time yyyy restarting... What configure options should I have built jack with? (./configure --with-default-tmpdir=/dev/shm)
> 
> My .pdrc file looks like this:
> -jack
> -rt
> -path /usr/local/lib/pd/externs
> -path /usr/local/lib/pd/extra
> -path /home/wade/pd/general
> -path /home/wade/pd
> -lib sphere~
> -lib fftbin~
> -lib zexy
> -lib Gem
> -mididev 1,2,3
> -r 48000
> -channels 18
> 
> If I dont specify an audiobuf or blocksize, what are the defaults?

64-sample jack buffer works here. 2.6.9-final CONFIG_PREEMPT=y (no psycho patches..) echoaudio nforce3 939-3000+

with that kinda rice in your kernel string, you might want to try devel_0_37 and paste this into configure.in:

       if test "$optimize" == "k8"; then
          ARCH_CFLAGS="-march=k8 -mmmx -msse -msse2 -mfpmath=sse"
       fi

and configure with:

./configure --enable-jack --enable-alsa --enable-optimize=k8 --enable-simd --enable-threadedsf

but i'm only tasting with 'warbly sine wave thing.' because soundfiles arent loading. have you gotten that to work?

default blocksize is 64, but i tried 48 and 96 and it made no difference. first thing you want to do is get jack working without the xrun messages...

> 
> Im using a hammerfall multiface, and it seems like a brand new machine with a super-duper kernel and a nice piece of hardware like the hammerfall should allow me to run pd at 5.333 msec latency without xruns or delay of xxxx usec spare time yyyy restarting... errors. Can someone help me to get pd, jack and my machine tuned?
> 
> I dont have preemptable latency tracing because Ingo M. told me that it causes badness on x64 architectures, so I cant use that.
> 
> Thanks for the help!
> -thewade
> 
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