NFS performance..
Chris Miller
cmiller at gammae.com
Sun Nov 30 05:55:38 UTC 2003
Have you given NFS tcp a try? UDP works but has its down sides. One of
them being if you need to retransmit.
/etc/fstab
nfs:/nfswrite /nfswrite nfs
noatime,rsize=32768,wsize=32768,actimeo=60,bg,intr,timeo=14,tcp,nfsvers=3 0 0
Works real good for me.
On Sat, 2003-11-29 at 01:39, WipeOut wrote:
> Craig White wrote:
>
> >----
> >I was hoping to see some interest in this thread as I am about to do the
> >same thing - obvious the permissions on the NAS aren't the same if you
> >use Samba
> >
> >Craig
> >
> >
> >
> I eventually worked out why there was such a huge write performance
> difference between NFS and Samba..
>
> Basically Samba by default will buffer writes to the hard drive.. NFS
> will not, NFS will confirm that the data has bee written to dike before
> it continues which means that the data integrity is taking preference
> ofer performance when using NFS..
>
> You can override this by adding the "async" option to the NFS export..
> when you do this NFS will buffer the writes and is actually then faster
> than Samba (probably down to the fact that its using UDP instead of
> TCP).. When buffering the writes in any system there is a chance of data
> loss in the event of a power failure or a server crash..
>
> Anyway I found this quite useful that I am able to decied on a per
> export basis wheather its more important to have write performance or
> data integrity..
>
> So I will certainly be using NFS for my system because there will be no
> Windows systems that I need to maintain communications with..
>
> Later..
>
>
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