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Re: high sys time, very very slow builds on new 24-core system

On Fri, 25 Mar 2011, Andrew Doran wrote:

> On Fri, Mar 25, 2011 at 12:16:32AM -0700, Erik Fair wrote:
> > It will be interesting to see if this class of problem shows up again when
> > NetBSD is supported on the UltraSPARC "Niagra" CPUs.
> Agree.  Although as it stands 24 cores/threads would be a problem for
> sparc64 since it has a single mutex around the pmap.  One of the goals of
> the uvmplock branch is to make it very easy to address that problem.

The pmap needs to be rewritten for sun4v anyway since you can't access the 
hardware directly any more.


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