I'm at a bit of a loss about this.
I'm running a big import in aperture, and it's causing my system to slow down to a complete crawl, basically rendering it unusable for anything, even browsing the web. Since this seems a bit unnatural, I spent a little time looking around.
ps -Al shows that, apparently by default, the
SystemUIServer all seem to run at a priority far lower then userland applications. While user applications typically have a priority of 33, the Dock, Finder, etc have a priority of 53.
The end result, is ANY processor intensive task completely clobbers the UI, and renders the system unusable until it finishes.
renice -20 -p <prid> bumps them up to the same priority as the rest of the userland UI, and results in not having to wait 1-3 seconds (!) for the UI to respond to something as simple as a mouse click.
Thad said, I have two questions:
Is there any reason I shouldn't be altering the thread priority of the finder like this?
Is there any way to make the priority change persistent, e.g. so it stays that way after reboot.