the 33.55 MB/sec is about minimum, the 17.12 MB/sec and 15.79 MB/sec results make me think your hd is a bit too slow. what is the output of hdparm -I "dd device" Cheers DuWayne On Thu, 2007-06-14 at 22:30 +0200, Markus Herhoffer wrote: > > If you run "hdparm -t /dev/'hd or sd1partion" tell you ? > > I measured it 3 times to get an idea of the average: > > # hdparm -t /dev/sda1 > > /dev/sda1: > Timing buffered disk reads: 52 MB in 3.04 seconds = 17.12 MB/sec > > > # hdparm -t /dev/sda1 > > /dev/sda1: > Timing buffered disk reads: 50 MB in 3.17 seconds = 15.79 MB/sec > > > # hdparm -t /dev/sda1 > > /dev/sda1: > Timing buffered disk reads: 100 MB in 2.98 seconds = 33.55 MB/sec > > > > > > > On Thu, 2007-06-14 at 22:09 +0200, Markus Herhoffer wrote: > >> I get the same high frequecy of xruns both with -p 1024 and 2048: > >> > >> > >> 22:06:19.818 Patchbay deactivated. > >> 22:06:19.953 Statistics reset. > >> 22:06:20.126 MIDI connection graph change. > >> 22:06:20.286 MIDI connection change. > >> 22:07:01.574 Startup script... > >> 22:07:01.574 artsshell -q terminate > >> 22:07:02.935 Startup script terminated with exit status=256. > >> 22:07:03.017 JACK is starting... > >> 22:07:03.018 jackd -R -P7 -u -dalsa -r44100 -p1024 -n2 -D -Chw:0 -Phw:0 > >> 22:07:03.047 JACK was started with PID=9622 (0x2596). > >> jackd 0.101.1 > >> Copyright 2001-2005 Paul Davis and others. > >> jackd comes with ABSOLUTELY NO WARRANTY > >> This is free software, and you are welcome to redistribute it > >> under certain conditions; see the file COPYING for details > >> JACK compiled with System V SHM support. > >> loading driver .. > >> apparent rate = 44100 > >> creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit > >> control device hw:0 > >> configuring for 44100Hz, period = 1024 frames, buffer = 2 periods > >> nperiods = 2 for capture > >> nperiods = 2 for playback > >> **** alsa_pcm: xrun of at least 0.017 msecs > >> **** alsa_pcm: xrun of at least 0.015 msecs > >> **** alsa_pcm: xrun of at least 0.018 msecs > >> **** alsa_pcm: xrun of at least 0.016 msecs > >> **** alsa_pcm: xrun of at least 0.011 msecs > >> **** alsa_pcm: xrun of at least 0.014 msecs > >> 22:07:05.146 Server configuration saved to "/home/d135-1r43/.jackdrc". > >> 22:07:05.148 Statistics reset. > >> 22:07:05.796 Client activated. > >> 22:07:05.798 Audio connection change. > >> 22:07:05.802 Audio connection graph change. > >> 22:07:05.802 XRUN callback (1). > >> **** alsa_pcm: xrun of at least 0.019 msecs > >> **** alsa_pcm: xrun of at least 0.019 msecs > >> **** alsa_pcm: xrun of at least 0.022 msecs > >> **** alsa_pcm: xrun of at least 41.788 msecs > >> **** alsa_pcm: xrun of at least 0.017 msecs > >> **** alsa_pcm: xrun of at least 0.014 msecs > >> **** alsa_pcm: xrun of at least 0.011 msecs > >> **** alsa_pcm: xrun of at least 0.018 msecs > >> **** alsa_pcm: xrun of at least 0.013 msecs > >> **** alsa_pcm: xrun of at least 0.012 msecs > >> 22:07:07.701 XRUN callback (8). > >> 22:07:07.837 XRUN callback (7 skipped). > >> **** alsa_pcm: xrun of at least 0.018 msecs > >> **** alsa_pcm: xrun of at least 0.016 msecs > >> **** alsa_pcm: xrun of at least 0.012 msecs > >> **** alsa_pcm: xrun of at least 0.011 msecs > >> 22:07:09.869 XRUN callback (3 skipped). > >> **** alsa_pcm: xrun of at least 0.020 msecs > >> **** alsa_pcm: xrun of at least 0.011 msecs > >> 22:07:10.376 Client deactivated. > >> 22:07:10.377 JACK is stopping... > >> jack main caught signal 15 > >> no message buffer overruns > >> 22:07:10.717 JACK was stopped successfully. > >> 22:07:10.718 Post-shutdown script... > >> 22:07:10.719 killall jackd > >> jackd: no process killed > >> 22:07:11.086 Post-shutdown script terminated with exit status=256. > >> 22:08:22.296 Startup script... > >> 22:08:22.297 artsshell -q terminate > >> 22:08:22.867 Startup script terminated with exit status=256. > >> 22:08:22.868 JACK is starting... > >> 22:08:22.868 jackd -R -P7 -u -dalsa -r44100 -p2048 -n2 -D -Chw:0 -Phw:0 > >> 22:08:22.874 JACK was started with PID=9631 (0x259f). > >> jackd 0.101.1 > >> Copyright 2001-2005 Paul Davis and others. > >> jackd comes with ABSOLUTELY NO WARRANTY > >> This is free software, and you are welcome to redistribute it > >> under certain conditions; see the file COPYING for details > >> JACK compiled with System V SHM support. > >> loading driver .. > >> apparent rate = 44100 > >> creating alsa driver ... hw:0|hw:0|2048|2|44100|0|0|nomon|swmeter|-|32bit > >> control device hw:0 > >> configuring for 44100Hz, period = 2048 frames, buffer = 2 periods > >> nperiods = 2 for capture > >> nperiods = 2 for playback > >> **** alsa_pcm: xrun of at least 0.015 msecs > >> **** alsa_pcm: xrun of at least 0.015 msecs > >> **** alsa_pcm: xrun of at least 0.016 msecs > >> **** alsa_pcm: xrun of at least 0.015 msecs > >> **** alsa_pcm: xrun of at least 0.019 msecs > >> 22:08:24.927 Server configuration saved to "/home/d135-1r43/.jackdrc". > >> 22:08:24.928 Statistics reset. > >> 22:08:24.931 Client activated. > >> 22:08:24.932 Audio connection change. > >> 22:08:24.935 Audio connection graph change. > >> **** alsa_pcm: xrun of at least 0.017 msecs > >> 22:08:25.686 XRUN callback (1). > >> **** alsa_pcm: xrun of at least 0.029 msecs > >> **** alsa_pcm: xrun of at least 0.028 msecs > >> **** alsa_pcm: xrun of at least 0.012 msecs > >> **** alsa_pcm: xrun of at least 0.013 msecs > >> 22:08:26.970 XRUN callback (4 skipped). > >> **** alsa_pcm: xrun of at least 0.020 msecs > >> **** alsa_pcm: xrun of at least 0.013 msecs > >> **** alsa_pcm: xrun of at least 0.017 msecs > >> 22:08:28.870 XRUN callback (8). > >> 22:08:29.002 XRUN callback (2 skipped). > >> **** alsa_pcm: xrun of at least 0.027 msecs > >> **** alsa_pcm: xrun of at least 0.012 msecs > >> **** alsa_pcm: xrun of at least 0.010 msecs > >> 22:08:31.042 XRUN callback (2 skipped). > >> **** alsa_pcm: xrun of at least 0.019 msecs > >> 22:08:31.310 XRUN callback (12). > >> 22:08:31.745 Client deactivated. > >> 22:08:31.746 JACK is stopping... > >> jack main caught signal 15 > >> no message buffer overruns > >> 22:08:32.001 JACK was stopped successfully. > >> 22:08:32.003 Post-shutdown script... > >> 22:08:32.003 killall jackd > >> jackd: no process killed > >> 22:08:32.215 Post-shutdown script terminated with exit status=256. > >> > >> DuWayne Holsbeck wrote: > >>> Being that you probably do not need really low latencey, if you are not > >>> doing overdubs, you could change your period setting to 1024 or greater > >>> frames vs the 256 setting. This usually works for me, I have an A31 > >>> thinkpad, with many hours of live recording use, both with the onboard > >>> chip and an RME HDSP. > >>> > >>> Cheers > >>> DRH > >>> > >>> On Thu, 2007-06-14 at 21:44 +0200, Markus Herhoffer wrote: > >>>> Hi! > >>>> > >>>> I want to use Jack on my Thinkpad X60s notebook with the built in > >>>> soundchip. I know that this is not the best hardware, but I need a > >>>> possibility to record some things mobile. > >>>> > >>>> I get quite a few xruns every time I start jack with qjackctl -- too > >>>> many to work efficiently. I use Gentoo kernel 2.6.20-gentoo-r8, > >>>> realtime-lsm as module and the kernel option "Preemption Model > >>>> (Preemptible Kernel (Low-Latency Desktop))". > >>>> > >>>> This is the output of qjackctl (I stopped Jack intentionally): > >>>> > >>>> 21:40:29.357 Patchbay deactivated. > >>>> 21:40:29.486 Statistics reset. > >>>> 21:40:29.553 MIDI connection graph change. > >>>> 21:40:29.727 MIDI connection change. > >>>> 21:40:31.468 Startup script... > >>>> 21:40:31.468 artsshell -q terminate > >>>> 21:40:32.225 Startup script terminated with exit status=256. > >>>> 21:40:32.293 JACK is starting... > >>>> 21:40:32.293 jackd -R -P7 -u -dalsa -r44100 -p256 -n2 -D -Chw:0 -Phw:0 > >>>> 21:40:32.295 JACK was started with PID=9380 (0x24a4). > >>>> jackd 0.101.1 > >>>> Copyright 2001-2005 Paul Davis and others. > >>>> jackd comes with ABSOLUTELY NO WARRANTY > >>>> This is free software, and you are welcome to redistribute it > >>>> under certain conditions; see the file COPYING for details > >>>> JACK compiled with System V SHM support. > >>>> loading driver .. > >>>> apparent rate = 44100 > >>>> creating alsa driver ... hw:0|hw:0|256|2|44100|0|0|nomon|swmeter|-|32bit > >>>> control device hw:0 > >>>> configuring for 44100Hz, period = 256 frames, buffer = 2 periods > >>>> nperiods = 2 for capture > >>>> nperiods = 2 for playback > >>>> **** alsa_pcm: xrun of at least 0.015 msecs > >>>> **** alsa_pcm: xrun of at least 0.014 msecs > >>>> **** alsa_pcm: xrun of at least 0.016 msecs > >>>> **** alsa_pcm: xrun of at least 0.011 msecs > >>>> **** alsa_pcm: xrun of at least 0.013 msecs > >>>> **** alsa_pcm: xrun of at least 0.015 msecs > >>>> **** alsa_pcm: xrun of at least 0.011 msecs > >>>> **** alsa_pcm: xrun of at least 0.018 msecs > >>>> **** alsa_pcm: xrun of at least 0.015 msecs > >>>> **** alsa_pcm: xrun of at least 0.017 msecs > >>>> **** alsa_pcm: xrun of at least 0.011 msecs > >>>> **** alsa_pcm: xrun of at least 0.017 msecs > >>>> **** alsa_pcm: xrun of at least 0.014 msecs > >>>> **** alsa_pcm: xrun of at least 0.013 msecs > >>>> **** alsa_pcm: xrun of at least 0.014 msecs > >>>> 21:40:34.356 Server configuration saved to "/home/d135-1r43/.jackdrc". > >>>> 21:40:34.357 Statistics reset. > >>>> 21:40:34.380 Client activated. > >>>> 21:40:34.382 Audio connection change. > >>>> 21:40:34.391 Audio connection graph change. > >>>> **** alsa_pcm: xrun of at least 0.015 msecs > >>>> **** alsa_pcm: xrun of at least 0.039 msecs > >>>> 21:40:34.446 XRUN callback (1). > >>>> **** alsa_pcm: xrun of at least 0.013 msecs > >>>> **** alsa_pcm: xrun of at least 0.015 msecs > >>>> **** alsa_pcm: xrun of at least 0.017 msecs > >>>> **** alsa_pcm: xrun of at least 0.011 msecs > >>>> **** alsa_pcm: xrun of at least 0.026 msecs > >>>> **** alsa_pcm: xrun of at least 0.010 msecs > >>>> **** alsa_pcm: xrun of at least 0.014 msecs > >>>> **** alsa_pcm: xrun of at least 0.016 msecs > >>>> **** alsa_pcm: xrun of at least 0.016 msecs > >>>> **** alsa_pcm: xrun of at least 0.016 msecs > >>>> **** alsa_pcm: xrun of at least 0.014 msecs > >>>> **** alsa_pcm: xrun of at least 0.010 msecs > >>>> **** alsa_pcm: xrun of at least 0.011 msecs > >>>> 21:40:35.649 Client deactivated. > >>>> 21:40:35.651 JACK is stopping... > >>>> jack main caught signal 15 > >>>> no message buffer overruns > >>>> 21:40:35.904 JACK was stopped successfully. > >>>> 21:40:35.907 Post-shutdown script... > >>>> 21:40:35.907 killall jackd > >>>> jackd: no process killed > >>>> 21:40:36.242 Post-shutdown script terminated with exit status=25 > >>>> > >>>> These are my cards: > >>>> > >>>> # cat /proc/asound/cards > >>>> 0 [Intel ]: HDA-Intel - HDA Intel > >>>> HDA Intel at 0xee240000 irq 22 > >>>> > >>>> # lspci | grep Audio > >>>> 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High > >>>> Definition Audio Controller (rev 02) > >>>> > >>>> What to do? Are there some things to tweak? > >>>> > >>>> Markus > >>>> _______________________________________________ > >>>> Linux-audio-user mailing list > >>>> Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > >>>> http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user > >>> _______________________________________________ > >>> Linux-audio-user mailing list > >>> Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > >>> http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user > >> _______________________________________________ > >> Linux-audio-user mailing list > >> Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > >> http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user > > > > _______________________________________________ > > Linux-audio-user mailing list > > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > > http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
