This is a tool to be used with jackdbus. I have set up my system so that Jackdbus (AKA jackd2 with the dbus extension) runs as the main audio backend for all audio in the session. This tool changes latency on the fly as well as starting or stopping the pulse audio bridge, setting the CPU governor to ondemand or performance and stopping the cron service so that software updates do not automatically happen.
Is here.
Is here.