Re: pmap and mtx scalability problem

On Tue, Apr 24, 2012 at 10:43:08PM +0200, K. Macy wrote:

> No. I developed a patch from Jeffr that pushed the vm_page_lock array
> down in to the machine dependent code, replacing most of the uses of
> the single vm_page_queue_lock. However, alc doesn't like the design
> and has not proposed an alternative.

can i test this?

> -Kip
> 
> On Tue, Apr 24, 2012 at 10:36 PM, Slawa Olhovchenkov <slw_at_zxy.spb.ru> wrote:
> > On Tue, Apr 24, 2012 at 09:27:30PM +0200, K. Macy wrote:
> >
> >> Known problem. There is an open disagreement about how to improve the
> >> granularity of locking in pmap.
> >
> > split locking to process-specific information and global information?
> > use lock-free lists (i see TAILQ_INSERT_TAIL in pmap_enter)?
> >
> > sorry for stupidity, if any.
> 
> 
> 
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