Re: [NFS] [PATCH] knfsd: Correct reserved reply space for read requests.

[Neil Brown]

On Thursday March 30, eshel@xxxxxxxxxxxxxxx wrote:
> Hi Neil
> Can we use this opportunity to change NFSSVC_MAXBLKSIZE from 32K to 64K to 
> match RPCSVC_MAXPAYLOAD. It makes real difference in I/O performance (we 
> will still be saving half the space we used to allocate :).
> Thanks, Marc. 

Maybe... but why not 128K ??

There is certainly room to increase NFSSVC_MAXBLKSIZE, but I feel that
it needs to be done together with a more detailed look at consequences
in the network layer, particularly TCP window sizes.  I wouldn't mind
making a CONFIG_ tunable without that detailed look, but making it a
fixed change I feel less comfortable about.

NeilBrown
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