Re: Bad performance while transfer large block size through NFS.

I tried, but not help.
Still only 3798612 bytes/sec while block size is 2MBytes.

On 6/1/07, Claus Guttesen <kometen@xxxxxxxxx> wrote:
> I set up one NFS server, and mounted on other server by TCP. Servers
> connected with Giga network, and running 6.2-RELEASE.
>
> But I found the performance is very bad while transfering large block size data.
> For example, I use dd on NFS client to test the speed.
> And ``systat -vm 1'' is displayed HDD is most busy,
> Disks da0
> KB/t 16.00
> tps 239
> MB/s 3.73
> % busy 91
>
> Can I do some tuning to improve large block size transfer over NFS?

Try adding read- and write-size 32768, partial /etc/fstab:

rw,intr,nfsv3,-a=4,-w=32768,-r=32768

or adding -r 32768 -w 32768 while mounting from command line.

--
regards
Claus

When lenity and cruelty play for a kingdom,
the gentlest gamester is the soonest winner.

Shakespeare

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