I use a nice (free) process manager called ATMonitor for Mac OS X that has a lot of cool hidden features... one of which is being able to click on a running process.. and set the "renice" from +20 (less priority) to -20 (highest priority).

The best part.... it sticks between restarts... SO you want XYZ to get full attention all the time.. you set it once and it's done...

I want to do the same thing (renice a process) on an iPad running a particular daemon.. and I don't know how to set a renice permanently.

I can do it once, and it works fine... But the setting is lost on a reboot. I read somewhere..

Now, as for permanently resetting the priority of a process, this can't be done directly. You can fake it, however, with a shell script that starts the app and then immediately renice's it. Give that script a ".command" extension and it will be double-clickable in the GUI. Not very elegant, but it gets the job done.

But as it says.. not very elegant, and I dont think this is how ATMonitor does it....

I found this thread.... http://superuser.com and they gave a way to do it as a launch argument, but no apparent way to save it as a persistent value... for instance - if the program wasn't going to be started by launchd...

How do I set a permanent renice level, per executable binary, independent of it's PID, when, how or why it was launched?