On Sat, Mar 18, 2017 at 10:32 AM, Subash Abhinov Kasiviswanathan <subas...@codeaurora.org> wrote: >> All these hypotheses are quite testable, and it should be obvious that >> if a patch is supposed to improve performance there should be some >> effort to quantify the impact. > > > Hi Tom > > I ran a single stream unconnected UDPv4 test on an ARM64 system and I see > a slight increase in performance (782 -> 788Mbps) with udp demux disabled. > A rudimentary app which does a sendto/recvfrom along with some > statistics collection was used for this. > Less than 1% performance improvement in a benchmark doesn't justify the complexity of the patch. Eric's hypothesis was that an unconnected UDP socket may show issues because of cache misses in look-ups due to so many different sources. This should be fairly easy to benchmark by randomly setting source address in your test (IP any and routing my need to be set appropriately).
> -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > > a Linux Foundation Collaborative Project
