[ovs-dev] [bug15171 3/4] timeval: Increase accuracy of cached time 4X, from 100 ms to 25 ms.

[Ben Pfaff]

On Tue, Mar 05, 2013 at 04:52:53PM -0800, Ethan Jackson wrote:
> > With CFM and other tunnel monitoring protocols, having a fairly precise
> > time is good.  My measurements don't show this change increasing CPU use.
> > (In fact it appears to repeatably reduce CPU use slightly, from about
> > 22% to about 20% with 1000 CFM instances, although it's not obvious why.)
> >
> 
> That's surprising.  I wonder if it's reducing our likelihood of doing an
> immediate poll loop wake due to inaccurate timers.  Anyways, looks good.
> 
> Acked-by: Ethan Jackson <ethan at nicira.com>

Thanks.  I'm going to push these first three patches to master in a
minute.