> 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
