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Date:      Sat, 5 Dec 1998 00:25:43 -0500 (EST)
From:      Rob Miracle <rwm@TanSoft.COM>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Out of mbuf clusters
Message-ID:  <199812050525.AAA05926@Central.KeyWest.MPGN.COM>

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We have a machine running FreeBSD 2.2.7 that is our
database/NFS machine.  It holds our user home directories
that is NFS mounted to all the machines.  Our database is 
running on it and we have a file server for a 
large game running on the box.  It periodically reboots
with a message saying "out of mbuf clusters, increase max users".

The machine is not stressed in file io, memory usage, or CPU 
usage.

We build a new kernel with more max users and we still get the
crash.  At one point we hade maxusers at 512 and we still got
the error (it happend under 2.2.1 and we upgraded to 2.2.7 to
see if it fixed the problem but it didn't)
 
On a possible related note, many of our machines get these
messages which pop up on the console which say that the NFS on
this server went away followed by a message saying that it is
back (I don't have the exact text with me since I just got
paged out of bed because of the reboot).  We have about 20
nfsiod's running on the server to deal with the increased
traffic.

One other symptom.  These .nfsNNNNN.4 files are left laying
around all the time.

I think we don't understand something about NFS and it may
be the culprit to our mbuf issue which is my primary concern
since it is currently crashing us.

Any help would be appreciated.
Thanks
Rob
-- 
Rob Miracle
rwm@mpgn.com


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