Hi, On Mon, Jul 23, 2018 at 10:40:03PM +0000, Wiles, Keith wrote: > > > > On Jul 23, 2018, at 2:09 PM, Morten Brørup <m...@smartsharesystems.com> > > wrote: > > > > I haven't performance tested, but they are compiler branch prediction hints > > pointing out the most likely execution path, so I expect them to have a > > positive effect. > > We really need to make sure this provides any performance improvement and > that means it needs to be tested on a number of systems. Can you please do > some performance testing or see if we can get the guys doing DPDK performance > testing to first give this a try? This area is very sensitive to tweaking.
I agree we should be driven by performance improvements. I remember a discussion with Bruce on the ML saying that hardware branch predictors generally do a good job. Thanks, Olivier
