On 12/06/2012 01:19 AM, 5tefan wrote:
hello, i've recently installed ubuntustudio in parallel with osx on my macbook pro. ubuntu is basically running fine but i'm having troubles getting it to perform equally well as in osx. i'm mainly using supercollider and i have an edirol fa-101 firewire interface. ubuntu resp. the preinstalled ffado-drivers detected the interface immediately and i could use it with supercollider (via jackd(mp)) easily. however, the performance is by far not as good as under osx. a simple test-patch in supercollider that was consuming about 30% cpu max. in osx (tested withcoreaudio as well as jack, started via jackrouter) was quickly using up to 100% in linux, producing lots and lots of xruns. after asking on the supercollider-mailinglist someone pointed me to this address: http://wiki.linuxmusicians.com/doku.php?id=system_configuration where i found this test: https://github.com/raboof/realtimeconfigquickscan after executing the test i followed the recommended steps to tune my system. this is the current state: == GUI-enabled checks == Checking if you are root... no - good Checking filesystem 'noatime' parameter... found - warning /media/exchange does not have the 'noatime' parameter set /media/satellite does not have the 'noatime' parameter set /media/scratch does not have the 'noatime' parameter set /media/burn does not have the 'noatime' parameter set /media/G4 does not have the 'noatime' parameter set /media/emergency does not have the 'noatime' parameter set For more information, see http://wiki.linuxmusicians.com/doku.php?id=system_configuration#filesystems Checking CPU Governors... CPU 0: 'ondemand' CPU 1: 'ondemand' - not good Set CPU Governors to 'performance' with 'cpufreq-set -c <cpunr> -g performance'
My first guess is that this might be the culprit. So you might want to try setting it to performance.
Regards, Jeremy _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
