Terrible NFS performance under 9.2-RELEASE?

[Christian Weisgerber]

Rick Macklem:

> > When I switched my desktop box from FreeBSD 7 to 9, NFS read
> > performance from my media server (running OpenBSD) became extremely
> > poor.  I couldn't even stream a movie any longer.  Disabling TSO
> > on the nfe(4) interface had no effect.  My workaround was to switch
> > from a TCP mount to a UDP one.  The problem has persisted to FreeBSD
> > 10.
> > 
> > I can now report that switching to [rw]size=32768 with a TCP mount
> > also works fine.
> > 
> If it is convenient, trying a 64K TCP mount with a kernel that has the
> attached patch (which makes it use page size clusters and reduces the
> # of segments to 18) to see if it works well, would be interesting.

No, this works very poorly.

-- 
Christian "naddy" Weisgerber                          naddy at mips.inka.de