Re: Heads up: moving some uvmexp stat to being per-cpu

[Antti Kantee <pooka%cs.hut.fi@localhost>]

On Tue Dec 14 2010 at 20:49:14 -0800, Matt Thomas wrote:
> I have a fairly large but mostly simple patch which changes the stats 
> collected in
> uvmexp for faults, intrs, softs, syscalls, and traps from 32 bit to 64 bits 
> and
> puts them in cpu_data (in cpu_info).  This makes more accurate and a little 
> cheaper
> to update on 64bit systems.

And probably a lot cheaper on MP systems?

I was curious about the cache effects of uvmstats recently.  Did you by
any chance do a before/after build.sh test on an SMP machine?

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