Re: poor nfs performance

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 7 Dec 1997 17:29:54 +0000 (GMT)


> There is somthing fishy going on with SUNs and NFS performance. About
> 2 or three years ago, a friend of mine came to the conclusion that
> SunOS <-> SunOS and Solaris <-> Solaris worked fine, and that
> SunOS <-> Solaris was very slow. So it seems that Linux adds a third
> class to this mess, and is outperformed in some way or another by both
> the Suns.....

The BSD fs and vm has some fairly fundamental problems with smaller than
page sized synchronous writes. Its not normally an issue because nothing much
but NFS shows it up and it makes other stuff work out better. Ok a box
with 8K page sizes you want to do 8K blocks on the mount. I wouldnt suggest
it right now until the vm stuff in 2.1.x is fixed however.