[ovs-dev] [coverage 1/3] timeval: Rate-limit logging rusage information.

Ben Pfaff blp at nicira.com
Thu Apr 26 14:07:49 PDT 2012


On Wed, Apr 25, 2012 at 07:40:44PM -0700, Ben Pfaff wrote:
> On Wed, Apr 25, 2012 at 06:43:12PM -0700, Ethan Jackson wrote:
> > > I'd always assumed that the EWMA code here was sufficient rate-limiting,
> > > but I actually encountered a pathological case some time ago that forced
> > > this rusage information to print once a second or so, which seems too
> > > often.
> > 
> > Could you give a bit more detail on "EWMA" in the commit message? It's
> > not obvious to me what it's referring to.
> 
> "exponentially weighted moving average"
> http://en.wikipedia.org/wiki/EWMA_chart
> http://en.wikipedia.org/wiki/Moving_average

I modified the commit message to spell this out, here and in patch
2/3.



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