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I made a couple of simple kernel tests with different Mandriva kernels to see if Kernel-RT is really needed or should be recommanded.<br>I used the same song in same daw with qjackctl, same everything, except the kernel.<br>
I used the Hunz-Demo-song in Renoise 2.6 with low Frames in QJackctl to force some XRUNS on my Laptop with onboard soundcard.
<ul><li class="level1"><div class="li"> kernel-desktop-2.6.33.7-2mnb ⇒ 14 XRUNS</div>
</li><li class="level1"><div class="li"> kernel-desktop-tmb-desktop-2.6.34-10mdv ⇒ 10 XRUNS</div>
</li><li class="level1"><div class="li"> kernel-rt-2.6.33.5-1.rt23.1 ⇒ 2 XRUNS</div>
</li></ul>I also use the RTIRQ from Rui Nuno Capela with the Kernel-RT<br><br>any other experiences??<br><br>regards, saschas<br><br><div class="gmail_quote">2010/12/22 Sascha Schneider <span dir="ltr"><<a href="mailto:ungleichklang@gmail.com">ungleichklang@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">This sounds great, <br><br>latest kernel-tmb I see in the repos (64bit) is 2.6.31<br>will test it this eve on my both mashines with my musicapps.<br>
<br>Thanks Thomas<br><br>added this kernel as an option to the wiki<br><br>
regard, saschas<br> <br><div class="gmail_quote">2010/12/22 Thomas Backlund <span dir="ltr"><<a href="mailto:tmb@iki.fi" target="_blank">tmb@iki.fi</a>></span><div><div></div><div class="h5"><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
SaschaS skrev 17.12.2010 18:49:<div><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
After having a looong chat with the guys from linux4audio and reading<br>
tons of posts in ccrma forum, I must say .....<br>
<br>
Idea with an rt-kernel for netbooks ....... DISMISSED .... it simply<br>
makes no sense.<br>
Those guys mostly use gentoo and build their own kernel for years now<br>
and they gave me the following hints, that also can be found in<br>
discussions of other distributions:<br>
1) the kernel (without preemption-patch) should have<br>
<br>
Processor type and features>> Preemption Mode>> Complete Preemption (Real-Time)<br>
</blockquote>
<br></div>
This is already enabled in kernel-tmb<div><br>
<br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Processor type and features>> Timer frequency>> 1000 HZ<br>
</blockquote>
<br></div>
This is already enabled in all -desktop kernels<div><br>
<br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
General setup>> RCU Subsystem>> RCU Implementation (Preemptable tree-based hierarchical RCU)<br>
</blockquote>
<br></div>
This is already enabled in kernel-tmb<div><br>
<br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Proccesor Type and features >> Tickless System (Dynamic Ticks) should<br>
be excluded<br>
</blockquote>
<br></div>
This one you can get by booting with "nohz=off" on the kernel command line.<br>
<br>
--<br><font color="#888888">
Thomas<br>
</font></blockquote></div></div></div><br>
</blockquote></div><br>
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