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Date:      Thu, 25 Mar 1999 14:31:28 -0800 (PST)
From:      Matthew Dillon <dillon@apollo.backplane.com>
To:        Jesse <j@lumiere.net>
Cc:        Luigi Rizzo <luigi@labinfo.iet.unipi.it>, freebsd-net@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject:   Re: 3.1-STABLE dies on 40+ connects
Message-ID:  <199903252231.OAA03635@apollo.backplane.com>
References:   <Pine.BSF.4.05.9903251330290.493-100000@leaf.lumiere.net>

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:Just to provide a little bit more info, Alex, one of the developers of
:icecast said that a person running OpenBSD had kernel panics under similar
:conditions but that it was never resolved.
:
:The machine is remote, but I can have someone stand by and record the
:kernel panic message while I crash it, if you it'd be useful (probably).
:
:---
:Jesse <j@lumiere.net>
:http://www.lumiere.net/

    On the face of it it sounds to me like icecast is perhaps making the
    socket buffers bigger --- maybe too big.  The default socket buffer
    size is 16K receiving, 16K sending.  40 x 16K x 2 = 1MB.  If 
    icecast is increasing the size of the socket buffers, this value can
    explode.  netstat -tn on a running system ought to give you some idea
    about that by seeing how backed-up the socket buffers get.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>




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