[OpenAFS] UDP slowness remedies?
Eric Chris Garrison
Fri, 22 Oct 2010 13:04:37 -0400
So, I'm doing a mass migration of AFS volumes from one campus to
another. Both machines have Gigabit interfaces, and we have a 20 Gig
link between the campuses that I understand to be not at all saturated.
However, I'm seeing a transfer rate of only about 30 Mbits/sec
(according to iftop) between the two machines. I'm working on it with
my local network people, but it seems to be a UDP issue... if I use
iperf with defaults for UDP, I get about 1 Mbit/sec. If I increase the
buffer size to 1024M, it screams along at 900+ Mbit/sec.
So how's this work with AFS/rx? Is there something I can tweak to
increase UDP transfer speed?
Any advice would be appreciated.