Good point, but I assume a plugin only receives events it subsribed for, so it's not that for any event all plugins have to be notified. Also consider that the

Good point, but I assume a plugin only receives events it subsribed for, so it's not that for any event all plugins have to be notified. Also consider that the combination of serialization/local pipe/deserialisation may sound like something huge, but in reality probably only takes a couple of mSec. On the other hand: if it really goes over TCP/IP on another machine on another network, the lag should be noticable. But I doubt there are many plugins like that. On a sidenote: C apis are still used widely. And there are enough libraries out there to put an extra IPC layer on top of it so the'll behave the same as this one (i.e. can communicate though pipe/socket/... of choice).