Messages in this thread | | | Date | Fri, 05 Mar 1999 13:21:51 -0000 (GMT) | From | Simon Kenyon <> | Subject | Re: MOSIX and kernel mods. |
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On 05-Mar-99 Horst von Brand wrote: > There just isn't a 1e4 factor difference between paging and overlays, I'd > be surprised if you get more than a factor of 2.
i was actually making the comparison between using "real" memory and "virtual" memory. there is a factor of 4 between them (at least)
> And you could also tune > your program to be paging-friendly by clustering functions/data used > together... but I'd guess much of that happens semi-automatically by the > way source programs are laid out (you don't usually define totally > unrelated functions in the same source file, for one).
i take it from that comment that you've never had to write overlays :-) been there, done that, have the tee... well actually i don't have the tee-shirt.
anyone know where i can buy a "i used overlays in RSX-11/M" tee-shirt
is a tee-shirt one where if you pour data in one arm; it comes out the other arm AND the bottom (or is it the neck? i forget!)
-- Simon Kenyon
irial limited mailto:simon@irial.com 10 Castle Avenue tel:+353-1-8530624 Clontarf gsm:+353-87-2805470 Dublin 3 http://www.irial.com/
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