Bug#633815: jackd2: High CPU usage following sleep (top reports 190% on quad-core)
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 pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
Bug#633815: jackd2: High CPU usage following sleep (top reports 190% on quad-core)
On 11-07-14 at 07:25pm, 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. Important detail from subject seems missing in the email content: Problem occurs after *sleep*. I experience the same (just have been lazy and not reported it). It does not occur always, but I have experienced it with both alsa, firewire and net backends. - Jonas -- * Jonas Smedegaard - idealist & Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ [x] quote me freely [ ] ask before reusing [ ] keep private signature.asc Description: Digital signature ___ pkg-multimedia-maintainers mailing list pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
Bug#633815: jackd2: High CPU usage following sleep (top reports 190% on quad-core)
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? 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 ___ pkg-multimedia-maintainers mailing list pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
Bug#633815: jackd2: High CPU usage following sleep (top reports 190% on quad-core)
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. -- System Information: Debian Release: wheezy/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.36.20101128 (SMP w/4 CPU cores; PREEMPT) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C) Shell: /bin/sh linked to /bin/dash Versions of packages jackd2 depends on: ii coreutils 8.5-1 GNU core utilities ii debconf [debconf-2.0] 1.5.38 Debian configuration management sy ii libasound21.0.23-2.1 shared library for ALSA applicatio ii libc6 2.11.2-11 Embedded GNU C Library: Shared lib ii libcelt0-00.7.1-1The CELT codec runtime library ii libdbus-1-3 1.4.6-1simple interprocess messaging syst ii libexpat1 2.0.1-7XML parsing C library - runtime li ii libgcc1 1:4.4.4-17 GCC support library ii libjack-jackd2-0 1.9.6~dfsg.1-2 JACK Audio Connection Kit (librari ii libncurses5 5.7+20100313-5 shared libraries for terminal hand ii libreadline6 6.1-3 GNU readline and history libraries ii libsamplerate00.1.7-3Audio sample rate conversion libra ii libsndfile1 1.0.23-1 Library for reading/writing audio ii libstdc++64.6.0-10 The GNU Standard C++ Library v3 ii python-dbus 0.83.1-1 simple interprocess messaging syst Versions of packages jackd2 recommends: ii jackd2-firewire 1.9.6~dfsg.1-2 JACK Audio Connection Kit (FFADO a ii libpam-modules1.1.2-2Pluggable Authentication Modules f ii qjackctl 0.3.6-1+b1 User interface for controlling the Versions of packages jackd2 suggests: ii jack-tools0.0.2-7+b1 various JACK tools: plumbing, play ii meterbridge 0.9.2-8+b1 A collection of Audio meters for t -- debconf information: * jackd/tweak_rt_limits: true ___ pkg-multimedia-maintainers mailing list pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers
