[ovs-dev] [threaded-put 14/21] ofproto-dpif-xlate: Add a mechanism to skip wildcard calculation.

[Ben Pfaff]

OK, thanks for the background.
On Dec 12, 2013 6:57 PM, "Ethan Jackson" <ethan at nicira.com> wrote:

> > I wonder how much time it really saves?
>
> Jarno said offline that disabling the decision tree stuff he wrote
> increases flow setup performance by roughly 5%.  In the new multi
> threaded revalidation setup, shaving a bit off the cost of
> xlate_actions() will directly lead to larger datapath flow tables. I
> haven't measured this specific optimization personally though.
>
> The other reason I want this, is it will make it marginally easier for
> people trying to experiment in the classifier with expensive megaflow
> optimization techniques.  I could save it for when such a case
> actually arises, but given the 5% gain Jarno mentioned and that I know
> of other specific things in the pipeline, I figured I'd go for it.
>
> Ethan
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openvswitch.org/pipermail/ovs-dev/attachments/20131212/5970bb0b/attachment-0003.html>