bad NFS/UDP performance

Danny Braniss danny at
Sat Sep 27 08:12:41 UTC 2008

> --==_Exmh_1222467420_5817P
> Content-Type: text/plain; charset=us-ascii
> Content-Disposition: inline
> David,
> You beat me to it.
> Danny, read the iperf man page:
>        -b, --bandwidth n[KM]
>               set  target  bandwidth to n bits/sec (default 1 Mbit/sec).  This
>               setting requires UDP (-u).
> The page needs updating, though. It should read "-b, --bandwidth
> n[KMG]. It also does NOT require -u. If you use -b, UDP is assumed.

I did RTFM(*), but when i tried it just wouldn't work, I tried today
and it's actually working - so don't RTFM before coffee!
btw, even though iperf sucks, netperf udp tends to bring the server down
to it's knees.

PS: * - i don't seem to have the iperf man, all I have is iperf -h

More information about the freebsd-stable mailing list