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- Newsgroups: comp.unix.aux
- Path: sparky!uunet!think.com!ames!nsisrv!jagubox!jim
- From: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
- Subject: Re: SWAP size for 20MB IIci?
- Message-ID: <1363@jagubox.gsfc.nasa.gov>
- Lines: 34
- Sender: usenet@nsisrv.gsfc.nasa.gov (Usenet)
- Nntp-Posting-Host: jagubox.gsfc.nasa.gov
- Reply-To: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
- Organization: NASA/Goddard Space Flight Center
- References: <1356@jagubox.gsfc.nasa.gov> <C0Jtzq.ELv@Novell.COM>
- Date: Sat, 9 Jan 1993 03:36:51 GMT
-
- mceder@ithaca (Mike Cederholm) writes:
- >The normal rule of thumb for uxix is:
- > swap >= 2 x memory
-
- >Your reasoning is correct that with more memory you should swap less often,
- >but why even hint that a person should reduce swap space afer increasing
- >memory in a unix machine?... Being a multi-user, multi-tasking system, with
- >more memory available for processes, the chance of swapping can be greater
- >because more processes are actually running.... In a properly tuned system
- >the addition of more memory can truly require much greater swap spaces.
-
- >Now that I climb off my soapbox, Your advice as good even considering what
- >I have just pointed out because the mac aux is rarely used in a multi-user
- >type environment. I agree... never go through repartitioning if you do not
- >have to.... Setting up a secondary swap (many systems allow this, unknown on
- >aux if it is) is preferable...
-
- All this is very true and I should have qualified my statement by saying
- that unless one were then to _really_ increase the load on the system,
- increasing Swap isn't needed.
-
- Swapping is great if you need it (and back with the PDP-11s, boy! did you
- need it :) but nowadays, the real push is to increase RAM so you reduce the
- need for swapping. The rub is, as you mentioned, with more memory one
- might increase buffer sizes and run lots more processes such that swapping
- becomes worse.
-
- Yep... A/UX allows for the easy addition of additional Swap on a sep.
- disk.
- --
- Jim Jagielski | "It is not I who am crazy...
- jim@jagubox.gsfc.nasa.gov | it is I who am MAD!"
- NASA/GSFC, Code 734.4 |
- Greenbelt, MD 20771 | - Ren
-