What about the attached patch?
- add command line overrides for the hash tables sizes. It's impossible 
to guess if the system is used as a HPC or as a file server. Doc update 
missing.
- limit the dcache hash to 8 mio entries, and the inode hash to 1 mio 
entries, regardless of the amount of memory in the system. The system 
admin can override the defaults at boot time if needed.
- distribute the memory allocations that happen during boot to all nodes 
- the memory will be touched by all cpus, binding all allocs to the boot 
node is wrong.

The patch compiles, but is untested due to lack of hardware.

--
    Manfred