> I don't see why a "security policy driven message bus" would be more expensive than what he describes (unzipping, business rules encorcement, analyzing, etc).

> I don't see why a "security policy driven message bus" would be more expensive than what he describes (unzipping, business rules encorcement, analyzing, etc). It was in comparison with an HTTP server. I did not read much about the mail thread but from what I can tell it essentially benchmarks the uninteresting part of DBUS which is the part that runs in userspace. That's old and definitely needs improvements, but not the design of it. In fact, the design of KDBUS or the DBUS dispatching core is from what I can tell quite intelligent and makes sense from a performance point of view. Without a doubt there are a lot of old bells and whistles attached to DBUS which need rewriting.