On 12/28/05, <b class="gmail_sendername">Mike Frisch</b> <<a href="mailto:mfrisch@isurfer.ca">mfrisch@isurfer.ca</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>The "tcp" option may not be necessary but I haven't taken the time to<br>benchmark between TCP and UDP.</blockquote><div><br><br>For gigabit ethernet, the nfs people recommend TCP.<br><br>From the man page for nfs (5):
<br><br>WARNINGS<br> Using NFS over UDP on high-speed links such as Gigabit can cause silent data corruption.<br><br> The problem can be triggered at high loads, and is caused by problems in IP fragment reassembly. NFS
<br> read and writes typically transmit UDP packets of 4 Kilobytes or more, which have to be broken up into<br> several fragments in order to be sent over the Ethernet link, which limits packets to 1500 bytes by
<br> default. This process happens at the IP network layer and is called fragmentation.<br><br>They go into greater detail about this issue. For info use 'man 5 nfs'<br><br><br>-J</div></div>