NFS attr cache performance

[Geoff Mohler]

Im looking for deep hacks into what I could do to make the 6.x NFS client 
hold a larger (or much larger) file/directory attribute cache.

In very large make "everything" environments with Fbsd, we are about 1/3rd 
the speed of local disk coming from a very large Netapp box.

The same make from a heavily patched/modified Linux NFS client is miles 
faster than local disk.

I have no insight to the Linux modifications, but looking at the nfsstats, 
attribute calls are the bulk of the traffic to the NFS mounted file 
system.

Any and all ideas are OK..maybe something simple I overlooked.

I need to reserve another build server early this week, and go over my 
options again on whats not been working, and get the list numbers as well.

Thanks in advance.