Terrible NFS performance under 9.2-RELEASE?

John-Mark Gurney jmg at funkthat.com
Mon Jan 27 03:23:50 UTC 2014


Rick Macklem wrote this message on Sun, Jan 26, 2014 at 21:16 -0500:
> Btw, thanks go to Garrett Wollman for suggesting the change to MJUMPAGESIZE
> clusters.
> 
> rick
> ps: If the attachment doesn't make it through and you want the patch, just
>     email me and I'll send you a copy.

The patch looks good, but we probably shouldn't change _readlink..
The chances of a link being >2k are pretty slim, and the chances of
the link being >32k are even smaller...

In fact, we might want to switch _readlink to MGET (could be conditional
upon cnt) so that if it fits in an mbuf we don't allocate a cluster for
it...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."


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