[mythtv-users] Re: Samba 3 better than NFS 3 for recording over
jtidmore at gmail.com
Thu Dec 29 00:29:40 EST 2005
On 12/28/05, Mike Frisch <mfrisch at isurfer.ca> 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):
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
They go into greater detail about this issue. For info use 'man 5 nfs'
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