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- From: ajs@hpfcso.FC.HP.COM (Alan Silverstein)
- Date: Wed, 18 Nov 1992 20:44:57 GMT
- Subject: Re: Strange Swap...
- Message-ID: <7371471@hpfcso.FC.HP.COM>
- Organization: Hewlett-Packard, Fort Collins, CO, USA
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!sdd.hp.com!hpscit.sc.hp.com!scd.hp.com!hpscdm!hplextra!hpfcso!ajs
- Newsgroups: comp.sys.hp
- References: <eskilb.722100530@fenris.dhhalden.no>
- Lines: 20
-
- I wrote swapinfo...
-
- > What really puzzles me is that "hold" swap space increased to ~1500MB
- > immeadiatly after adding the disk.
-
- Actually what you have is a large negative hold space, which is silly.
- Since it's computed as a difference between other values, it means the
- other values were out of whack. In particular the second dev has a
- ridiculously high USED value, out of balance with the first volume.
- This is a clue.
-
- I suspect what you're seeing is a known problem found just a month or so
- ago. The kernel has an overall cap on usable swap space -- but I can't
- recall the name of the configurable value. Swapinfo doesn't know about
- this cap, and it never showed up in testing. When the cap is hit, extra
- swap space on the system isn't considered FREE by the swap manager in
- the kernel, so it falls into the USED column, which then perverts the
- values of hold space USED and FREE. The tot line is probably correct,
- except you can't in fact use all the AVAIL space unless you reconfigure
- the kernel.
-