Would be interesting to hear comments from the community on this comparison : https://elegantnetwork.github.io/posts/followup-measuring-BGP-stacks/
N.B. For the record, don't shoot the messenger, I had nothing to do with these tests, I just became aware of them via the BIRD list. I am particularly interested in the OpenBSD community comments given one person on the BIRD list had this to say of OpenBGPD: "OpenBGPd has always been a dog.".