Re: low latency versus sched O(1) - and versus preempt

=?ISO-8859-2?Q?Martin_Ma=E8ok?= (martin.macok@underground.cz)
Mon, 14 Jan 2002 09:06:44 +0100

On Mon, Jan 14, 2002 at 01:01:34AM +0100, Martin Mačok wrote:
> If I get enough free time, I will test O1+preempt versus O1+mini-ll.

O1+mini-ll feels better and smoother when playing tuxracer during
kernel compilation (both nice +19 and +0 cases). (but I haven't tested
O1+preempt+lockbreak)

However, comparing full_ll versus O(1)+mini_ll when there's no
load, I get 10% higher framerate of XMMS/Jess audio/visual plugin.
When there is some real load, O(1)+mini_ll performs ~30% higher
framerate then just full_ll.

(So the winner for my desktop is still vanilla+full_ll+largenice while
explicitely running non-interactive highload tasks with nice +19 (ie,
compilations, cronjobs, mailserver...) the only "audio skipping" task
is mkisofs)

-- 
         Martin Mačok                 http://underground.cz/
   martin.macok@underground.cz        http://Xtrmntr.org/ORBman/
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