On large systems (like NUMA-Q, Intel Profusion, etc...), latency and 
user responsiveness become much less important.  The extra scheduling 
overhead caused by higher HZ is bad.

This is x86-only right now.  Is there any wider desire to tune this at 
config time?  Do any architecutures have strict rules as to what this 
can be set to?
-- 
Dave Hansen
haveblue@us.ibm.com