BGP route processing speed

I am interested in measurements related to BGP route processing speed (i.e. routing engine capacity in terms of routes or updates processed per second). Folks from AMS-IX did an interesting study in 2012 in their Route Server / IXP environment. https://ams-ix.net/downloads/ams-ix-route-server-implementations-performance... Are there other measurement studies available on this topic, especially in ISP/PE router scenarios, including BGP policy processing, best path selection, route filtering, etc.? Will appreciate much if you can share some pointers. Sriram