On Fri, Oct 24, 2003 at 06:19:57PM +0200, jmmv@menta.net wrote:
> Hi all,
> 
> I've been noticing interactive performance degradation in recent current
> (19 Oct, updating now to today) under somewhat heavy disk I/O (IDE).  Note
> that the last commits WRT performance improvements are not in my actual
> kernel, but should not improve things, AFAICT.
> 
> Some symptoms completely visible under X:
> - The mouse does not move smoothly, the window manager (xfwm4) takes forever
>   to switch desktops, terminal windows do not respond...
> - The TV viewer (fxtv) does strange things (or at least bktr).  Periodically,
>   a frame gets stalled and is overlapped over all the next ones, producing a
>   very ugly effect.  It disappears after very few time, but happens again,
>   almost continuously.  (and note that it is using overlayed video)
> - XMMS stops playing (as commented in another message today).  Adjusting the
>   volume, for example, lets it continue.
> 
> Some more notes: when this happens, if I run top, I can see that the CPU
> interrupt state is very high, over 75% (dunno if this has something to do).

Can you see which interrupts rates are high when you see this (systat vm
will show you this) ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 24 ans d'experience feront toujours la difference
--