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Date:      Thu, 15 Feb 2001 22:22:05 -0600 (CST)
From:      Dan Debertin <airboss@bitstream.net>
To:        "net@freebsd.org" <net@freebsd.org>
Subject:   buffer problems with ep
Message-ID:  <Pine.LNX.4.30.0102152211390.10566-100000@dmitri.bitstream.net>

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I have a busy 4.1.1-RELEASE nfs server that stops responding at its ep
interface every hour or so. Pings to hosts on that network respond with
"sendto: no buffer space available". I've recompiled with MAXUSERS up at
128 and NMBCLUSTERS at 32768, both of which seem plenty high. The problem
goes away, to return an hour later, after a quick 'ifconfig ep0 down;
ifconfig ep0 up'.

Other people seem to have run into this problem as well, but
there is no sign of a fix in the archives anywhere.

Here's netstat -m when it's working:

194/320/131072 mbufs in use (current/peak/max):
	179 mbufs allocated to data
	1 mbufs allocated to packet headers
	14 mbufs allocated to fragment reassembly queue headers
176/254/32768 mbuf clusters in use (current/peak/max)
588 Kbytes allocated to network (68% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines

and when it isn't:
172/320/131072 mbufs in use (current/peak/max):
	134 mbufs allocated to data
	38 mbufs allocated to packet headers
52/254/32768 mbuf clusters in use (current/peak/max)
588 Kbytes allocated to network (25% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines

Thanks for any help you an render,

Dan Debertin
--
++ Unix is the worst operating system, except for all others.

++ Dan Debertin
++ Senior Systems Administrator
++ Bitstream Underground, LLC
++ airboss@bitstream.net
++ (612)321-9290 x108
++ GPG Fingerprint: 0BC5 F4D6 649F D0C8 D1A7  CAE4 BEF4 0A5C 300D 2387










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