Re: netscape + SIGUNUSED -> 96% CPU

Stephen C. Tweedie (sct@dcs.ed.ac.uk)
Thu, 1 Aug 1996 23:25:02 +0100


Hi,

On Thu, 1 Aug 1996 01:35:40 -2200 (MET DST), Herbert Rosmanith
<herp@wildsau.idv.uni-linz.ac.at> said:

> nb: obviously, netscape crashed the day before (1376 div 60 = 22), and
> was since then consuming nearly all of the CPU% ... maybe the scheduling
> algorithm could be adapted to give lower priority to processes
> with high cpu-utilization

It does.

> and make a task-switch occur less frequently.

It does.

That's one of the reasons why linux's interactive behaviour is really
pretty good even under load. If I've got a large simulation plus a
compile going on in the background, response time in interactive
sessions is still instantaneous.

It might be possible to improve the scheduler a bit, but I haven't
seen any evidence that we need to.

Cheers,
Stephen.

--
Stephen Tweedie <sct@dcs.ed.ac.uk>
Department of Computer Science, Edinburgh University, Scotland.