How to Pause & Resume an App or Process in Mac OS X
Need to quickly free up some processing power? You can do that easily by temporarily pausing and then later resuming any active process or application in Mac OS X. Technically, this is actually ‘stopping’ and ‘continuing’ a process, but a stop is not to be confused with the more aggressive killing or force quitting applications and thus the terminology of pausing or halting is often easier to differentiate the two.
This means you can take a process that is consuming 100% CPU and temporarily pause it while you do something else, then resume it when you are ready to let that process do it’s thing. This is achieved through a command line trick, and we’ll cover two different ways to do it by using the kill and killall commands with the -STOP and -CONT flags. Ideally you will have some comfort and knowledge with the command line before using this, but it’s certainly not necessary.