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Date:      Wed, 29 Jan 2014 13:54:07 -0500
From:      Garrett Wollman <wollman@csail.mit.edu>
To:        freebsd-net@freebsd.org
Subject:   Big physically contiguous mbuf clusters
Message-ID:  <21225.20047.947384.390241@khavrinen.csail.mit.edu>

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Resolved: that mbuf clusters longer than one page ought not be
supported.  There is too much physical-memory fragmentation for them
to be of use on a moderately active server.  9k mbufs are especially
bad, since in the fragmented case they waste 3k per allocation.

-GAWollman




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