Re: 2.6.0 NFS-server low to 0 performance

[Mike Fedyk]

On Mon, Jan 12, 2004 at 10:12:03AM -0500, Trond Myklebust wrote:
> 
> > The 8k limit that you find in RFC1094 was an ad-hoc "limit" based purely
> > on testing using pre-1989 hardware. AFAIK most if not all of the
> > commercial vendors (Solaris, AIX, Windows/Hummingbird, EMC and Netapp)
> > are all currently setting the defaults to 32k block sizes for both TCP
> > and UDP.
> > Most of them want to bump that to a couple of Mbyte in the very near
> > future.
> 
> Note: the future Mbyte sizes can, of course, only be supported on TCP
> since UDP has an inherent limit at 64k. The de-facto limit on UDP is
> therefore likely to remain at 32k (although I think at least one vendor
> has already tried pushing it to 48k).

Does the RPC max size limit change with memory or filesystem?

I have one system (K7 2200, 1.5GB, ext3) where it uses 32K RPCs, and another
(P2 300, 168MB, reiserfs3) and it uses 8k RPCs, even if I request larger max
sizes, and they're both running 2.6.1-bk2.

Strange...
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