yes, I use unstable + agnula demudi repositorie, and until now works okey..., the demudi repositorie is a debian repositorie with just the audio aplications. On Sun, 06 Mar 2005 18:37:20 +0100, Atte Andr? Jensen <atte.jensen@xxxxxxxxx> wrote: > Jack O'Quin wrote: > > > "Best" depends on your needs and priorities. > > I would accept a kernel that is only used for music. Actually the only > thing I need realtime for is running csound5 in realtime controlled over > midi. I just upgraded from csound4 and performance is better in csound5, > but still I cannot get buffersize lower than 512 (csound-alone-latency: > 12ms = too much) without a click every 30 secs or so. csound4 clicked > much more, about every 2 secs, so I'm thinking I'm close, mainly due to > the fact csound5 is able to use the alsa drivers instead of oss-emulation. > > To be honest I'm not sure exactly what is the cause of the problem > (which is why I want to see what an optimized kernel will do), I can > think of: > > 1) kernel. > > 2) unnecessary services > > 3) the fact that my soundcard is usb (Edirol UA-1A) > > 4) csound itself (doubt it) > > 5) computer. Hope not, it a P4 2.4Ghz laptop > > > For lowest latency, 2.6.10 with Ingo Molnar's realtime preemption > > patches is currently the best. > > That's new for me... You're not talking about this, right? > > [atte@aarhus src]$ head linux-2.6.10-rt2.patch > diff -ruN -X /home/joq/bin/kdiff.exclude > linux-2.6.10-rc2-mm3/Documentation/realtime-lsm.txt > linux-2.6.10-rc2-mm3-rt2/Documentation/realtime-lsm.txt > --- linux-2.6.10-rc2-mm3/Documentation/realtime-lsm.txt Wed Dec 31 > 18:00:00 1969 > +++ linux-2.6.10-rc2-mm3-rt2/Documentation/realtime-lsm.txt Wed Nov > 24 09:58:29 2004 > @@ -0,0 +1,39 @@ > + > + Realtime Linux Security Module > + > + > +This Linux Security Module (LSM) enables realtime capabilities. It > +was written by Torben Hohn and Jack O'Quin, under the provisions of > > I tried applying the above patch, but I didn't see anything new under > "security" in the kernel config, so I guess I did something wrong... > > Where to get the patches you're talking about, and what to do? > > > But, that requires considerable effort > > on your part. > > Not that much, since I'm on a home brewn 2.6.9... This also means that I > have a working alsa setup. If i wen't with 2.4 I would have to install > alsa seperately, so... > > > A recent, stable 2.6.x kernel is also an easy option. I'm getting as > > good or better LL results with vanilla 2.6.10 than with 2.4.19 and the > > LL patches. I have not tried 2.6.11 yet, but expect it to be even > > better. IMO, latency is no longer a reason to avoid 2.6 kernels. > > As mentioned, I'm already on 2.6.9. > > > For the easiest solution, go with PlanetCCRMA (Fedora/RedHat) or > > AGNULA/DeMuDi (Debian). They've got this stuff all integrated and > > readily available for binary download. > > I'm not interrested in "easy" but in "best". I'm on debian/unstable, so > maybe agnula would be possible. I just want to make sure that my current > system is not "infected" with all kinds of agnula stuff. Is it possible > just to get the low-latency kernel and use on an unstable system? > > -- > peace, love & harmony > Atte > > http://www.atte.dk > >
