Messages in this thread |  | | Date | Sat, 3 Aug 1996 10:56:41 +0100 | From | "Stephen C. Tweedie" <> | Subject | Re: netscape + SIGUNUSED -> 96% CPU |
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Hi,
"Aaron" == Aaron Ucko <UCKO@VAX1.ROCKHURST.EDU> writes:
>> 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.
> Depends on hardware. I've got a 486DX2/66 with 8M RAM swapping to IDE; > if I compile the kernel and run Netscape at the same time, disk activity > goes up markedly, both processes run at a snail's pace, and interactive > performance isn't too hot either. OTOH, doing significantly better in > this case would take a miracle.
Of course. We were talking about the scheduling algorithm. Memory size versus working set size is another important factor for performance, but it's a completely separate one. Performance is always like this --- it's hard to analyse because there are so many contributing factors. Knowing _that_ something is slow is far removed from knowing _why_ it is slow. :)
Are you running the 2.0 kernel, btw? Later kernels do swap much better than 1.2 (and I mean *much* better) under heavy load, but with that kind of workload in 8MB you are never going to see really good performance.
Cheers, Stephen. -- Stephen Tweedie <sct@dcs.ed.ac.uk> Department of Computer Science, Edinburgh University, Scotland.
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