On Thu, Jul 14, 2011 at 07:25:39PM +0200, Adrian Knoth wrote: > On 07/14/11 01:49, Joel Roth wrote: > > Hi! > > > Package: jackd2 > > Version: 1.9.6~dfsg.1-2 > > Severity: normal > > > > Observed when running jackd with user privileges. > > > > System is extremely sluggish until I kill jackd. > > Can we have some numbers, please?
> Many people run jackd2 with user privileges, that's actually the > recommended way, and none of them experiences a substantial slowdown. > > So we need to find out what's wrong with your system or particular > setup. > > I suggest a procedure like this: > > 0. Update to the current package version > 1. Stop jackd (killall -9 jackd, if need be) > 2. Start top, htop or another CPU > 3. Start jackd -d dummy > > This must not trigger an considerable increase in CPU usage. Then, stop > this jackd and start your real jackd. Which parameters do you use? Which > soundcard is it? 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) A couple of naive attempts with version 1.9.7~dfsg-1 don't show any slowdown. I'll look into this further. My parameters are mostly defaults: jackd -d alsa -d hw:0,0 -r 44100 -H Thanks for your attention. > Increasing the buffer size will ease the timing and hence lower the CPU > load. Assuming you use ALSA: > > $ jackd -d alsa -p 2048 --> relaxed timing > $ jackd -d alsa -p 128 --> stresses the CPU a bit more > > In case of firewire audio interfaces, there has been made a fix recently > that triggered tons of error messages to be printed on the console, thus > making the entire system awfully slow. The newest package has the fix. > > > Cheers -- Joel Roth _______________________________________________ pkg-multimedia-maintainers mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
