[Bug 277197] NFS is much too slow at 10GbaseT

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277197

Rick Macklem <rmacklem@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rmacklem@FreeBSD.org

--- Comment #1 from Rick Macklem <rmacklem@FreeBSD.org> ---
You could try these mount options:
nconnect=4 (or 8) on the NFSv4 mount only
  (doesn't work for NFSv3)
readahead=4 (or 8)

You can also try bumping up the rsize/wsize.
For the server, set
bfs_server_maxio=1048576
in it's /etc/rc.conf.

For the client, set
vfs.maxbcachebuf=1048576
in it's /boot/loader.conf.

A mount done after these changes should
default to rsize=1048576,wsize=1048576
(you can then try 256K using the rsize and wsize
 mount options).

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