20 Sep
2007
20 Sep
'07
1:51 p.m.
On Thursday 20 September 2007, Frank Mehnert wrote:
On Thursday 20 September 2007, Alexey Eremenko wrote:
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?
On 9/20/07, Pablo Sanchez
<pablo(a)blueoakdb.com> wrote:
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! > 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 .. 
21 Sep
21 Sep
8:24 p.m.
Am Donnerstag, 20. September 2007 schrieb David Baron:
Question is: How does ticklessness effect audio?
Realtime-preemptive
kernels? Other multimedia?
Tickless and RT both work fine here with audio and low latencies (~5ms).
Only app making problems is amarok with xine outputting to alsa. Regardless
which version of xine and amarok... strange enough amarok with
xine-to-arts-to-alsa or with xine-to-jack-to-alsa works...
Arnold
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1 comments
2 participants
participants (2)
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Arnold Krille -
David Baron