LA Walsh wrote:
> Rogier Wolff wrote:
> > > > On Linux any swap adds to the memory pool, so 1xRAM would be
> > > > equivalent to 2xRAM with the old old OS's.
> > >
> > > no more true AFAIK
> > I've always been trying to convice people that 2x RAM remains a good
> > rule-of-thumb.
> Ug. I like to view swap as "low grade memory" -- i.e. I really
> should spend 99.9% of my time in RAM -- if I spill, then it means
> I'm running too much/too big for my computer and should get more RAM --
> meanwhile, I suffer with performance degradation to remind me I'm really
> exceeding my machine's physical memory capacity.
Agreed. However, with current growing memory sizes, people are
suggesting: "I ran with 32Mb RAM and 64Mb swap until a year ago, so
128Mb ram should allow me to run swapless". I disagree.
The price-difference between RAM and disk is such (*) that if you
follow the guideline of swap=2xRAM, you're still spending 20 to 50
times as much on the RAM as you are on the disk space for swap.
Even if the swap is going to be idle 99.9% of the time, the investment
allows you to say "gosh what is the machien slow today. It might be
swapping" instead of "Why the heck has the machine crashed (#) all of
(*) And remains like that!
(#) Even if we have a good OOM killer, you might find the machine in a
-- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 ** *-- BitWizard writes Linux device drivers for any device you may have! --* * There are old pilots, and there are bold pilots. * There are also old, bald pilots. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to firstname.lastname@example.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Apr 30 2001 - 21:00:20 EST