If a long task is being performed in a Mac OS X application but the computer doesn't seem to be allocating much of the CPU's capacity to the application running it, the task can be accelerated by doing the following:
1. Open the Activity Monitor or Process Viewer in the /Applications/Utilities/ folder and look for the process's pid, which will be a number.2. After getting this number, open the Terminal in the /Applications/Utilities/ folder and enter the following:
sudo renice -20 pid
Replace pid with the number which was found earlier and press Enter. This command will probably ask for a password; if so, nothing will appear in the Terminal window while it is being typed. After typing the password, press Enter again. The effect of this command is lost when the application in question is quit.
