What? Of course not. Its a pacth - no compiling needed. But be sure to keep a generic kernel at the boot (just use grub to preserve a boot without rt, I never had problems and use the same rt kernel for 1 year, but safety first =P) Real time (-rt) and Low latency (-lowlatency) kernels
You may want to install the -lowlatency kernel, you can simply do: sudo apt-get install linux-lowlatency linux-headers-lowlatency If you still experience Xruns or you have a firewire sound card supported by the FFADO project, you may want to install the -rt kernel: sudo apt-get install linux-rt linux-headers-rt 2010/6/30 András Murányi <[email protected]> > Buh, it seems then i'll need to get a kernel from a PPA or compile it > myself. A bit afraid of it, honestly. > Thanks for the explanation! > > Andras > > > On Sat, Jun 26, 2010 at 12:50 PM, Ricardo Lameiro < > [email protected]> wrote: > >> well, AFAIK, the "RT" Kernel is a generic kernel that is modified by a >> special patch, that is made by Ingo Molnár. This patch gives the kernel the >> ability to have a behavior that allows the assignment of time frames and >> allocations to compute "rt" flagged tasks. Maybe this could be translated to >> the scheduler.In the other hand, the preemptive kernel, its a normal Generic >> kernel, that its compiled with different options. At compile time, the >> configuration of the scheduler and company are configured more aggressively >> to give a better response to the "rt" flagged apps. >> >> As my opinion, that is worth nothing...., the preemptive kernels are >> comming into a very good level, since the main tree ot the generic kernel, >> has absorbing parts of Ingo's patches. But, still, the RT kernel is way more >> accurate on the scheduling etc. problem is that, RT kernels are in nature >> more Power hungry, and by the nature of its working, they could hang easily >> a computer, keeping only processing an high prio task. >> >> If I said something wrong, please correct me, I have looked at this stuff >> since a year to try to understand it better, so if someone can explain it >> better, please do. >> >> Ricardo Lameiro >> >> >> >> 2010/6/26 Andre "Osku" Schmidt <[email protected]> >> >> On Fri, 2010-06-25 at 22:17 +0200, András Murányi wrote: >>> > Hello people, >>> > >>> > does anyone know what is the real difference between an 'rt' and a >>> > 'preempt' kernel in linux? >>> >>> dunno, but here's a pretty interesting talk about real-time kernel >>> >>> http://lac.linuxaudio.org/2010/recordings/day2_1045_How_the_Real_Time_Kernel_Helps_Audio_and_Video_Applications.ogv >>> >>> >>> >>> _______________________________________________ >>> [email protected] mailing list >>> UNSUBSCRIBE and account-management -> >>> http://lists.puredata.info/listinfo/pd-list >>> >> >> >> >> -- >> Fagote / Contrafagote >> Bassoon / Contra-bassoon >> http://myspace.com/ricardolameiro >> >> _______________________________________________ >> [email protected] mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- Pedro Lopes contacto: [email protected] website: http://web.ist.utl.pt/Pedro.Lopes
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