svn commit: r284959 - in head: . share/man/man4 share/man/man9 sys/conf sys/dev/glxsb sys/dev/hifn sys/dev/random sys/dev/rndtest sys/dev/safe sys/dev/syscons sys/dev/ubsec sys/dev/virtio/random sy...

[Slawa Olhovchenkov]

On Fri, Jul 24, 2015 at 11:06:59PM -0600, Scott Long via svn-src-all wrote:

> > I'm working on a premise of "tools, not policy". I'd like there to be
> > enough harvesting points for the box owner to get the warm fuzzies.
> > If they choose to use less, fine by me.
> > 
> 
> Sure, and that's not an unreasonable goal, but the devil is in the details.
> It's an unfortunate fact of modern CPU architecture that even something
> as simple and innocent as a run-time control that checks a variable can
> cause significant performance problems, thanks to the penalty of cache
> misses and bus contention between lots of CPU cores.  Maybe these
> "extended" collection points should be controlled with a compile-time
> option?

I am hate compile-time option, may be time to introduction some JIT in
project? As global feature.