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From: klolio@nastg.gsfc.nasa.gov (Karen Lolio x2857)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: UDP Performance Tuning
Date: 8 Mar 1996 17:13:09 GMT
Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
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Message-ID: <4hppr5$lbh@post.gsfc.nasa.gov>
NNTP-Posting-Host: nastg.gsfc.nasa.gov
X-Newsreader: TIN [version 1.2 PL2]
We installed FreeBSD 2.1 (Walnut Creek) and started doing
Ethernet performance testing. TCP results were good and what
we expected, but UDP resulted in only 200Kbs input and couldn't
do output at all. The error was ENOBUF - no system buffers
available.
Why does this happen under UDP? Is this a bug, if so,
is there a fix? Are there tunable kernal parameters? If so,
where are they? Thanks!!
Karen Jefferson
CSC
kjeffers@nastg.gsfc.nasa.gov