From: Green, Simon (Simon.Green@EU.ALTRIA.COM)
Date: Mon Mar 24 2003 - 06:00:22 EST
Sorry to be the bearer of bad news, but all of the RoT I know about are
horribly out of date, referring back to the days when memory was measured in
MBs and before the advent of late memory allocation.
The simplest one I know of is 2*Memory or 512MB, whichever is less. (That's
from the System Management Concepts manual.) You may also come across:
total paging space = 512MB + (memory size - 256MB) * 1.25
...but that may be a bit silly for really large amounts of memory.
But it really is so incredibly application dependent that it's impossible to
come up with a meaningful RoT.
For searching, you may find that Google is more useful. A basic search for
"aix paging size algorithm" gives some decent results. Don't forget the
Groups tab. comp.unix.aix covers much the same ground as this list.
Simon Green
Altria ITSC Europe s.a.r.l.
AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
AIX FAQ at http://www.faqs.org/faqs/aix-faq/
N.B. Unsolicited email from vendors will seldom be appreciated.
> -----Original Message-----
> From: pSeries AIX Geek [mailto:aixgeek@YAHOO.COM]
> Sent: 23 March 2003 04:07
> To: aix-l@Princeton.EDU
> Subject: Rule-of-thumb paging size algorithm
>
>
> OK, so I've been through this list's archives with no
> success (I can't ever think of the best search terms
> to use).
>
> I know that there was a thread that discussed the best
> "rule-of-thumb" starting place for allocating paging
> space given the amount of memory you have.
>
> [Yes, I know that it's all application-dependent, and
> in a perfect world, you'd have no paging. I'm not
> interested in those discussions, just the simple
> initial formulae that were provided.]
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