[arch-general] PA over JACK: excessive work?

Hi, I'm using PulseAudio over JACK and noticed in htop that while not doing nothing PA works much more than when idle alone, is this normal/right? This is what I do: Close everything that uses audio. Start JACK through qjackctl. $ pulseaudio --kill $ pulseaudio --start (So, PA now works as some kind of bridge redirecting audio through JACK.) $ pactl load-module module-jack-sink $ pactl load-module module-jack-source (So I have general sink/source ports to make connections.) But then I check htop and PA is working all the time. Is this normal? Am I doing something wrong? Thanks a lot in advance.