Hi everyone, I noticed something today using v19.04-rc0, running Ubuntu 18.04
Fresh install, nothing modified, cloned straight from https://gerrit.fd.io/r/vpp Either built manually or via vpp/build-root/vagrant/build.sh, then installed non-dev and non-debug debs When NOT using workers, latency is fine, but when enabling workers from the startup configuration, even just a single worker, immediately increases the latency by 20-40 fold Not using NAT, simply adding an IP to one of the interfaces, and pinging a host on the same subnet. I've attempted to play around with rx-placement on the interfaces without any success. Placing them all on the same worker increases the latency to 25-27 ms I've tested this on three different machines, both physical and virtual, some running Skylake-X, others running Ivy-EP all displaying the same issue. No workers: 0.25 - 0.38 ms latency Any other number of workers: 10-28 ms latency depending on rx-placement
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