Messages in this thread | | | Date | Sun, 28 Sep 2003 15:06:52 +0200 | From | "Ihar 'Philips' Filipau" <> | Subject | Re: [OT] No Swap. Re: [BUG 2.6.90-test5] kernel shits itself with 48mb ram under moderate load |
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Roger Luethi wrote: > On Sat, 27 Sep 2003 21:59:55 +0200, Ihar 'Philips' Filipau wrote: > >> Better than with swap. This is production workstation - I cannot test >>something on it :-( > > > I don't think there's much risk involved in running 2.[56]. If it doesn't > boot, you can go back to 2.4. If it does boot, it won't eat your data. > YMMV, of course. >
Data corruption? My back-up of work? I cannot back-up my data since my comp by itself is backup :-)
> >> <rant>'Paging like crazy' became for me a synonym of Linux. It >>doesn't matter how much memory you have. Less == worse. Developers > > > Oh, it does matter. My workstation has 1 GB RAM and 2 GB swap and I hardly > see any problems with paging <g>. >
Because your workload doesn't hit the 1GB limit. Actually we just do not have fast enough I/O + CPU to utilize 1GB of RAM efficiently.
But if you will go into 128MB of RAM - you will see difference, where should be no difference.
Let's say (my personal exp.) cp'ing of kernel source with 0.5/0.25 GB RAM dosn't differ. Aproximately the same time. 0.25GB little bit faster - but it can be written off to noise. But try to do the same cp with 0.125GB - this cp (as of RH 2.4.20-20.9 +ext3 -swap) takes _*two*_ times longer. Should it be?
> >>stopped testing VMM regression on low-memory computers long time ago. > > Many of the best Linux devs these days work for companies and organizations > that are in the business of selling or using big iron. They have people on
Indeed.
-- Ihar 'Philips' Filipau / with best regards from Saarbruecken. -- "... and for $64000 question, could you get yourself vaguely familiar with the notion of on-topic posting?" -- Al Viro @ LKML
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