FreeBSD NFS slow/freezing up
reddit / BSD

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kill-sto · 2013-10-11 00:46

I have been experience horrible problems with nfs. When I mount my NFS
share over a gigabit network, it starts very fast then slow down to <
1MB/s, then freezes a bit, then starts back up. This happens over and
over again with large files until I give up. I have tried SCP to rule
out network problems, and I get 35-40MB/s using it.

I have tried multiple things with the nfs configuration on the server
including: nfs3, nfs4, putting the share on zfs, putting the share on
UFS . On the client: playing around with wsize and rsize, versions,
sync, async.

Currently the mount options are
> killbsd:/path/to/mount /mnt/bsd nfs noatime,rw,user,users,vers=3 0 0

and on the server

> /path/to/mount -alldirs -mapall=myuser -network 192.168.0.0

I've googled around for hours and have not found a solution but I have
found similar problems. I'm using arch linux and haven't had a problem
with NFS before. Currently I'm compiling virtualbox on my FreeBSD box
to see if it is in fact my client.

Has anyone else seen this before?

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ssenator · 2013-10-11 09:56

Have you tried increasing MTU (MSS)?