Woody wrote:
> Actually I can agree with you totally....just one thing....I don't think
> that you will ever use a full 128 M swap space UNLESS you are running some
> big daddy server.....
Fair enough. I seem to remember some past threads around here that took up
this issue, and the general consensus seemed to be that this particular rule
of thumb does date back to days of smaller RAM; the number 64megs seems to
hover in my mind as one proposed 'sufficiently ridiculous' amount of swap.
And unless there are transients that I'm missing, none of my machines ever
make it above five or ten megs of usage in swap anyhow.
The scary monster to look out for (and here, again, I merely give voice to
that which I've read elsewhere) is the odd crash that tries to dump a big core
out somewhere; supposedly that can cause a lot of memory to be eaten up in a
hurry, hence the 'twice RAM' figure to allow for a program as big as your RAM
to dump its whole big ugly self to swap for copying out to a core dump file
without running you completely out of memory (thus causing the end of the
world).
But it's never happened to me. The biggest core dump I can recall ever seeing
was _maybe_ ten megs or so.
All sort of far afield from the original question, sure, but I think there was
at least some interest in the "why" as well as the "how much." 8)
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