On Wed, 2008-12-17 at 00:00 +0100, Davide Cittaro wrote: > > On Dec 16, 2008, at 11:49 PM, Craig White wrote: > > > > > > > > larger rsize/wsize values do not necessarily translate to faster and > > I > > was of the opinion that going over 65536 wasn't going to help at > > all. > > With some NFS servers, a smaller rsize/wsize is better. (8192 or > > 16384) > > but that is the point of tuning I suppose. > > > > > > > I've tried r/w sizes from 8k to auto (that is 104k for Solaris server > and 32k for FreeBSD server)... there are minor changes in max speed > (let's say it ranges from 70 to 80 MB/s). > > > hubs/switches, wires and the network cards themselves all can impact > > performance - it's not necessarily CentOS itself. > > > Well, as long as Gentoo linux and FreeBSD clients show ~100 MB/s... > BTW I'm using > 2.6.18-92.1.18.el5.centos.plus > kernel on x86_64 hardware... I need to use CentOS (I migrated from > Gentoo for sake of simplicity) but this NFS issue really... well, it > is not a good thing :-) ---- out of curiousity...why are you using the plus kernel? Do you need it to support particular hardware? Is it possible to boot/test with the standard kernel? Craig