The kdbuswreck

> the scheduler should've been altered to also select the previous process' IPC peer ("partner") to run until the client's wakeup condition was satisfied, and then return to the client immediately. This would've made a closed wait over AF_UNIX equivalent to a syscall, some thousands of clock cycles notwithstanding.

Hear! Hear!

This has the potential to make requesting services from a daemon (any daemon) much more efficient. Everything from web servers to desktop environments could benefit. Just think about how many daemons are constantly running in any typical desktop (answer: dozens!)

One has to wonder why something like this doesn't exists yet?