New subject: NOHZ (was [vbox-users] openSUSE 10.3?)

20 Sep 2007

On Thursday 20 September 2007, Frank Mehnert wrote:
...
  On Thursday 20 September 2007, Alexey Eremenko wrote:
  On 9/20/07, Pablo Sanchez
&lt;pablo(a)blueoakdb.com&gt; wrote:
   > If
so, try booting your host kernel with the nohz=off option.

 I'll try the above. 
 Just to follow up, passing the above kernel parameter solved the
 problem.  I read up a bit on CONFIG_NO_HZ=y and this is a good thing
 to save power.  If I get a chance, I may try the latest svn snap .. 
 It's not just about power -- NOHZ (also called tickless kernels) can
 make Virtualization faster. All types of Virtualization - because
 there will be less overhead.

 But this all is just in theory. 
 Indeed, using a tickless Linux kernel as _guest_ induces less overhead
 since there are less world switches between the host and the guest.

 But I'm talking about nohz=off for the _host_ Linux kernel! 
Sorry for the cross-posting but it is appropriate here.

... Or compile the kernel appropriately.

Question is: How does ticklessness effect audio? Realtime-preemptive kernels? 
Other multimedia?

Re: NOHZ (was [vbox-users] openSUSE 10.3?)