Re: 2.3.27 always keeping 15M free?
Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 12 Nov 1999 19:24:07 +0000 (GMT)
> > You also need to figure very fast when you will need to do this otherwise
> > your performance goes through the floor.
>
> it should be rather fast. But if higher-order zones are completely
> allocated then we are under heavy memory pressure anyway. But it should
> work already.
On a 20Mb machine we were 10% down on performance until the code was tweaked
to find a DMA fallback in the same pass of memory. Obviously thats with the
old allocator so doesnt translate exactly
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