NFS Performance issue against NetApp

[Jeremy Chadwick]

On Wed, Apr 24, 2013 at 04:08:24PM -0700, Marc G. Fournier wrote:
> 
> On 2013-04-24, at 16:02 , Rick Macklem <rmacklem at uoguelph.ca> wrote:
> 
> >> 
> > Along with rsize,wsize you might want to try increasing readahead. The
> > default is only 1.
> 
> Stupid question on this, possibly, but are the current defaults "sane" anymore, or residual from 'the old days'?   Like, I've read in many places where you should raise rsize/wsize … in what circumstances would leaving as the defaults make sense?

>From what I can discern, the defaults on stable/9 (for an NFS client)
are 8192 -- see sys/nfsclient/nfs.h, NFS_WSIZE and NFS_RSIZE.

-- 
| Jeremy Chadwick                                   jdc at koitsu.org |
| UNIX Systems Administrator                http://jdc.koitsu.org/ |
| Mountain View, CA, US                                            |
| Making life hard for others since 1977.             PGP 4BD6C0CB |