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Date:      Tue, 08 May 2001 18:48:04 -0400
From:      "Brandon S. Allbery KF8NH" <allbery@ece.cmu.edu>
To:        freebsd-stable@freebsd.org
Subject:   Re: 4.3-S: No buffer space available [SOLVED: dummynet]
Message-ID:  <180940000.989362084@vpn38.ece.cmu.edu>

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I'm seeing this with mpd_netgraph from (< 1 week ago) ports running a PPTP 
tunnel.  "top" claims there is 39M free; netstat -m similarly shows that 
I'm getting nowhere near any limits; yet periodically I see not only "No 
buffer space available" but also other misbehaviors such as dropped 
keystrokes in XFree86.  Raising maxusers doesn't affect it.  What may be 
significant is that I'm also running natd to support a host-only VMware 
setup (but VMware is not running when these problems occur); I'll be 
disabling that next.  (The system runs fine with natd but no mpd, though.)

The system has yet to panic as a result, so nothing useful from a debug 
session.  Any other suggestions as to tracking this down?

-- 
brandon s. allbery     [os/2][linux][solaris][japh]   allbery@kf8nh.apk.net
system administrator        [WAY too many hats]         allbery@ece.cmu.edu
electrical and computer engineering                                   KF8NH
carnegie mellon university     ["better check the oblivious first" -ke6sls]


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