Slow disk write speeds over network

Jason Stone freebsd-performance at dfmm.org
Tue Jun 10 15:23:30 PDT 2003


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> You haven't said if you were using UDP or TCP for the mounts; you
> should definitely use TCP with FreeBSD NFS servers; it's also just
> generally a good idea, since UDP frags act as a fixed non-sliding
> window: NFS over UDP sucks.

Huh.  I thought that the conventional wisdom was that on a local network
with no packet loss (and therefore no re-transmission penalties), udp was
way faster because the overhead was so much less.

Sorry if this seems like a pretty basic question, but can you explain
this?


 -Jason

 --------------------------------------------------------------------------
 Freud himself was a bit of a cold fish, and one cannot avoid the suspicion
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