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Date: Sat, 5 May 2007 10:49:29 -0700 (PDT)
From: Matthew Dillon <dillon@apollo.backplane.com>
Message-Id: <200705051749.l45HnTMw096807@apollo.backplane.com>
To: John-Mark Gurney <gurney_j@resnet.uoregon.edu>
References: <028388C628F68A7AE08C4185@ganymede.hub.org>
	<20070505174213.GL17958@funkthat.com>
Cc: corwin@aeternal.net, freebsd-stable@freebsd.org,
	"Marc G. Fournier" <freebsd@hub.org>
Subject: Re: swap zone exhausted, increase kern.maxswzone
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:If you do have 8gigs of swap, then you do need to increase the parameter..
:The default is 7.7gigs of supported swap...  (assuming that struct swblock
:hasn't changed size...  The maxswblock only limits it... If swap is more
:than 8x memory, then changing kern.maxswzone will not fix it and will
:require a code change...
:
:-- 
:  John-Mark Gurney				Voice: +1 415 225 5579

    The swblock structures only apply to actively swapped out data.  Mark,
    how much data is actually swapped out (pstat -s) at the time the
    problem is reported?

    If you can dump UMA memory statistics that would be beneficial as well.
    I just find it hard to imagine that any system would actually be using
    that much swap, but hey! :-)

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>