Jumbo frames are your friend On Wed, 2005-12-28 at 21:29 -0800, Jonathan Tidmore wrote: > On 12/28/05, Mike Frisch <[EMAIL PROTECTED]> wrote: > > The "tcp" option may not be necessary but I haven't taken the > time to > benchmark between TCP and UDP. > > > For gigabit ethernet, the nfs people recommend TCP. > > From the man page for nfs (5): > > WARNINGS > Using NFS over UDP on high-speed links such as Gigabit can > cause silent data corruption. > > The problem can be triggered at high loads, and is caused > by problems in IP fragment reassembly. NFS > read and writes typically transmit UDP packets of 4 Kilobytes > or more, which have to be broken up into > several fragments in order to be sent over the Ethernet > link, which limits packets to 1500 bytes by > default. This process happens at the IP network layer and is > called fragmentation. > > They go into greater detail about this issue. For info use 'man 5 > nfs' > > > -J > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
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