[pulseaudio-discuss] Distribution kernels and glitch-free (Packagers, read this!)

Lennart Poettering lennart at poettering.net
Sun Feb 22 17:43:43 PST 2009

On Mon, 23.02.09 09:33, Luke Yelavich (themuso at ubuntu.com) wrote:

> On Mon, Feb 23, 2009 at 09:23:10AM EST, Ozan Çağlayan wrote:
> > Lennart Poettering wrote:
> > 1) For fucks sakes: get your bloody kernels fixed. Enable preempt, set
> > >    HZ to 1000. Get rid of low-quality drivers that block the
> > >    CPU. Latencies of 210ms is *REALLY NOT NECESSARY*.
> > 
> > Is there *really* any distribution around who doesn't enable preemption? The timer frequency
> > can be a choice but not preempting the kernel is not sane nowadays.
> Ubuntu's generic kernel, used on desktop systems is not
> preempted. Since I am not a member of the kernel team, I can't
> comment why, and I myself am surprised. I have contacted the kernel
> team for Ubuntu to ask why they have things set the way they do, and
> intend to respond as soon as I have an answer from them.

Please keep me posted.

Somehow my guess is that you guys do that to support some kind of
closed source driver that doesn't like to be preempted while it is running.


Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
http://0pointer.net/lennart/           GnuPG 0x1A015CC4

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