Path: utzoo!yunexus!ists!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcso!hpfcdq!stroyan
From: stroyan@hpfcdq.HP.COM (Mike Stroyan)
Newsgroups: comp.sys.hp
Subject: Re: loss of swap space on a 9000/340 cluster ?
Message-ID: <350018@hpfcdq.HP.COM>
Date: 15 Nov 89 02:20:07 GMT
Article-I.D.: hpfcdq.350018
References: <2506@umbc3.UMBC.EDU>
Organization: Hewlett-Packard - Fort Collins, CO
Lines: 14

>   The best that I can figure is that for some reason, when some processes
> die, init can't regain all/or any of that processes alocated swap.  Is there
> any sort of a cron job that will go out and look for defunct process and
> try to regain its swap allocation ? This has also happened on another 340
> cluster.  Does anyone have any suggestions ?

Swap space is also used by shared memory segments.  They can outlive the
processes that create them.  Perhaps some program on the system is
leaving around big shared memory segments.  Use "ipcs -mb" to list
shared memory segments and their sizes.  You can remove shared memory
segments with "ipcrm -m <id>" where id is the ID column entry listed
by ipcs.

Mike Stroyan, stroyan@hpfcla.hp.com