Recent sys/vm/ changes and nvidia-driver

K. Macy kmacy at
Sat May 8 23:25:49 UTC 2010

On Sat, May 8, 2010 at 2:20 PM, b. f. <bf1783 at> wrote:
> On 05/08/10 13:36, Alan Cox wrote:
>> Doug Barton wrote:
>>> On 05/05/10 11:56, Alan Cox wrote:
>>>> I'm afraid that I would advise waiting a few days.  This round of
>>>> changes
>>>> are not yet complete.
> What performance differences, if any, can we expect on uniprocessors
> from the vm page lock-related changes? Kip's original post on -arch
> mentioned some performance improvements and no significant
> regressions, but on a dual 4-core machine.

I wouldn't actually worry about UP since the overhead can largely be
disabled by building without SMP. I think we need to be looking at how
a dual-core system performs, trading off any regressions there against
current processor trends of ever higher core and thread count.


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