Re: Memory management in 2.6

[Roger Luethi <rl@hellgate.ch>]

On Tue, 20 Jan 2004 16:05:52 +1100, Nick Piggin wrote:
> 
> Andrew Morton wrote:
> 
> >Nick Piggin <piggin@cyberone.com.au> wrote:
> >
> >>loads should be runnable on about 64MB, preferably give decently
> >>repeatable results in under an hour.
> >
> >In under three minutes, IMO.
> 
> That would be nice, but sometimes hard, with multiple processes
> and fairly heavy swapping load.

efax exhibits a much higher run time variance in 2.6 than in 2.4, and
that's only one process. The reason we can't say anything conclusive
after three minutes is not a lack of short benchmarks, but the fact
that most benchmarks need to be repeated a dozen times to get reliable
numbers.

> would be preferable to "do something for 2 minutes and measure how
> far we got", but kbuild doesn't lend itself particularly well to
> that.

What you can do for kbuild is to build only part of it. I used something
like:

rm arch/*/*/*.o arch/i386/boot/bzImage
time make -j24

Roger
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