Has anyone looked into what Ubuntu Studio is doing with the lowlatency kernel? Would it be feasible to include a similarly configured kernel in Fedora? On 11/13/2014 10:59 AM, Brian Monroe wrote: > I think so too, thanks for chiming in. > > I'm still waiting to get into the packagers group, but I have a koji > account and theoretically could compile an rt kernel. I think the > standard naming schema in other distros is kernel-rt. It should be > only adding a few lines to the spec file to enable the rt kernel, but > when you look at how many kernel update there are for Fedora every > week, I'm not sure as to how up to date we'll be able to keep up due > to the work load. We're already are down on developers, and people > like Brandon are keeping us afloat. > > Are we going to be ok as a project to be behind a week or two in > Kernel releases? Personally I'm for more stable kernels when it comes > to music production vs. having the latest and greatest, but I also > think that should be a clearly indicated as a feature > > That being said, I feel strongly as though others should take this > task on, if not me, then someone else or better yet, a few of us. > > > I'm looking into the Ubuntu Studio and turns out they dropped the RT > kernel as default. They're using a "lowlatency" kernel instead of a rt > kernel (though they do still supply an rt kernel but not by default). > I do know that users are able to get 1.5 ms latency with zero xruns so > I'm guessing they're doing something other than real-time scheduling, > I just don't know what. Thoughts? > > On Wed Nov 12 2014 at 10:40:44 AM Be Ing <be.0@xxxxxxx > <mailto:be.0@xxxxxxx>> wrote: > > Hello Fedora musicians, I've been lurking this list for a little > bit and this is my first time chiming in on something. > > I think it is important to pursue an official realtime kernel for > Fedora. I think a distribution focused on audio without a realtime > kernel would have a serious bug, that IMO, would be worth delaying > publication for. > > >So I had a beer with hansomepirate(jdulaney), who is, or was on > the kernel > sig, last night and we got to talking about a RT kernel. > > > >Last time we talked to the kernel folks about an rt kernel, they > weren't > impressed with the "need" for Fedora, but that was before the Spin was > officially out. > > > >Now might be a good time to raise this issue again? I dug through my > archives and found this thread. Now that we have an actual spin > that's out, > we can actually redo some of the testing to have more realistic tests. > (multitrack with effects) > > > >I feel like right now, it's one of the few benefits that the > ubuntu studio > folks have (or at least claim to have) over us. The other is some > semi-proprietary software that on... you know what, never mind > it's getting > off topic. > > > >Anyways, does the list think this is worth pursuing? > > > >>On Wed Feb 22 2012 at 9:10:29 PM Brian Monroe <briancmonroe at > gmail.com > <http://gmail.com>[https://admin.fedoraproject.org/mailman/listinfo/music]> > wrote: > >> > >> Ok, I redid all the tests, while the system was only running my > DE and the > >> test, and then again when I put it under duress by running a > script that > >> looped "du -h /" and "ls -Ral /usr/" over and over. I ran the > script twice > >> to get my proc up a bit to emulate running some intese delays > and reverbs > >> or other effects. > >> > >> Ironically the kernels typically did better when the scripts > were running. > >> Personally I think there's a clear advantage with CCRMA's > kernel or even > >> just a preempt kernel in the max lat areas. Those max numbers > jumped up > >> close to where they were near the beggining of the test if > anyone was > >> wondering. > >> > >> Here's the file with both sets of tests and the uname -a info > as requested > >> by Fernando. > >> -Brian > >> > >>> On Wed, Feb 22, 2012 at 6:54 AM, Brian Monroe <briancmonroe at > gmail.com > <http://gmail.com>[https://admin.fedoraproject.org/mailman/listinfo/music] > >>> wrote: > >>> I'll be sure to include that on the next batch. I used the > kernel you > >>> after installing the CCRMA repo when you use yum install > kernel-rt, which > >>> happens to be 3.0.17-1.rt33.1.fc16.ccrma.x86_64.rt. I'll go > back and > >>> include the other info to the old results when I do the load > testing > >>> tonight or tomorrow. > _______________________________________________ > music mailing list > music@xxxxxxxxxxxxxxxxxxxxxxx <mailto:music@xxxxxxxxxxxxxxxxxxxxxxx> > https://admin.fedoraproject.org/mailman/listinfo/music > _______________________________________________ music mailing list music@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/music
