On Wed, 7 May 2008 14:59:54 -0400 "Geoff King" <gsking1@xxxxxxxxx> wrote: > > On Tue, 2008-29-04 at 11:40 -0700, Florin Andrei wrote: > > > Malte Steiner wrote: > > > > On a new machine I thought I give Ubuntustudio a try and it > > > > seems that the lowlatency performance is much worse when the > > > > one of 64 Studio (booted from a live cd) on the same machine. > > > > So it needs some tweaking, are there any advices with > > > > UbuntuStudio? I read some past threads and they deal for > > > > instance with changing the priorities of jackd and the > > > > audioapplications but that improve the situation only > > > > slightly. I really wonder about the magic of 64 Studio... On > > > > the Ubuntuforums, which are a great resource even for Debian > > > > related stuff anyway, there seems no talk about lowlatency > > > > settings, it concerns only a minority. > > > > > > Why don't you go directly to the source? > > > > > > http://ubuntustudio.org/support > > > > I imagine because he's hoping to get third party opinions? I am > > too. > > > > Iain > > > > I tried 64 Studio live cd a few months ago and had a similar > experience. I did get better performance with 64 Studio than > ubuntustudio (gutsy at the time). I'm currently using ubuntustudio > hardy since I like the some of the other non-audio features it > provides and share the computer with my wife. But if you are truly > into only audio and need the lowest latency, 64 Studio may be better. > > I've done many tweaks to ubuntustudio to get it to do both jobs (from > memory): -Install with the rtirq script (I think I got the package > from either the 64 Studio or debian archives and had to change > something to make it work). Learn about what this does. > -Tried to uninstall or turn off programs that I don't use or need such > as trackerd, bluetoothd, powernowd, apmd and acpid on my desktop. > -Usual memory tweaks (shmmax) > -Try not use artsd or pulseaudio and stick with jackd for most things. > Turn off system sounds and select alsa as gnome audio resource. > -Had to manually install the jack-alsa plulgin to get amarok to work. > There is an ubuntuforums page about this. > > Not sure which helped the most, but I get pretty good performance now. > There is a lot of information available, on the web, but it takes > some trial and error to get it right. > > Plus sometimes you just can't get the latency down really low > depending on your hardware. > > Good Luck, Geoff Geoff, as you found out yourself, it's not easy to find good documentation that really fits your system. I'm writing a kind of starters guide for using jack on ubuntu studio (https://help.ubuntu.com/community/UbuntuStudio/JackQuickStart). It's very basic, since the goal is to get it up and running. A good tweaking guide would be very welcome. Best Regards, Philipp _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
