That kernel is getting pretty old. I'm running 2.6.24-rt1 here. you might want to check out the RT-Wiki or some of the sites for using RT kernels with audio apps. http://rt.wiki.kernel.org/index.php/Main_Page The above link gives instructions for patching a kernel to get to an RT kernel. Hope this helps, Mark On Tue, Mar 18, 2008 at 12:02 PM, Arda Eden <ardaeden@xxxxxxxxx> wrote: > Hmm, > So this is all about my kernel: > Linux melinda 2.6.18.8-86 #2 SMP Mon Feb 11 00:50:59 EET 2008 i686 mobile > AMD Athlon(tm) XP-M 2200+ GNU/Linux > > Is it possible to patch it in order to make it a RT kernel ? > > > On Tue, Mar 18, 2008 at 8:59 PM, Mark Knecht <markknecht@xxxxxxxxx> wrote: > > > > On Tue, Mar 18, 2008 at 11:41 AM, Arda Eden <ardaeden@xxxxxxxxx> wrote: > > > So what does a realtime kernel change ? Makes my latency 1 ms ? > > > > > > > > > > > > > > > On Tue, Mar 18, 2008 at 8:38 PM, Arnold Krille <arnold@xxxxxxxxxxxxx> > wrote: > > > > > > > > > > > > > > > > > > > Am Dienstag, 18. März 2008 schrieb Mark Knecht: > > > > > > > > > On Tue, Mar 18, 2008 at 11:25 AM, Arda Eden <ardaeden@xxxxxxxxx> > wrote: > > > > > > So is it really necessary to have a realtime kernel in order to > use > > > linux > > > > > > audio applications without any latencies or xruns ? > > > > > It is not possible to use ANY kernel with NO latencies. EVERY kernel > > > > > has latencies. The question is how low do you want the latencies to > > > > > be? If you can exist with 50mS or higher you might get away with a > > > > > standard kernel. If you want to run with 1.2mS latency then you will > > > > > absolutely have to have a real-time enabled kernel. > > > > > > > > Still it has to be noted that you can achieve 5ms latency without a > > > > RT-kernel... Even with an el-cheapo builtin soundcard... > > > > > > > > Arnold > > > > Absolutely. The most recent kernels are often quite good. However I > > would say that the difference between a standard kernel running 5mS > > and a RT kernel running 5mS is that the RT kernel is far more likely > > to meet the 5mS requirement under heavy system loads while the > > standard kernel may, at times, give a bit too much time to non-rt > > threads and not get back to your audio thread as fast as someone might > > want. > > > > If you want the highest reliability means of meeting your RT > > requirements all the time then use the RT kernel. If you are just > > doing home recording and can accept an occasional xrun (i.e. - a > > glitch in the recorded data) then stick with the standard kernel for > > as long as it works for you. > > > > Just my view, > > Mark > > > > > > -- > Arda EDEN > Cumhuriyet University > Faculty of Fine Arts > Department of Music Technology > Sivas/TURKEY _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
