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Date:      Wed, 26 Mar 1997 17:31:57 -0800
From:      Peter Haight <peterh@prognet.com>
To:        freebsd-hackers@freebsd.org
Subject:   ENOBUFS on heavy udp sending
Message-ID:  <3.0.1.32.19970326173157.01bd1940@mail.prognet.com>

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When sending a bunch of udp packets (about 1600 a second) I start to get
ENOBUFS on the sendto's near the end of a block of about 200 sends in a
fairly tight loop. (There are also about 200 TCP connections established,
but with no activity during this.) The kernel is 2.2-BETA and it has
NMBCLUSTERS=20480 and MAXMEM=98304. 

One of the times after this happend I did a 'netstat -a' and there are
about 200 alive UDP connections after I killed my program. They all look
like this:
Proto 	Recv-Q	Send-Q	Local	Foreign
udp	0 	0	*.*	*.* 

Any ideas about what is going on and how I can fix it?





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