HT4287: Mac OS X: 64-bit kernel frequently asked questionsLearn about Mac OS X: 64-bit kernel frequently asked questions
1175 Views 2 Replies Latest reply: Dec 13, 2013 4:28 PM by moveovermike
Currently Being ModeratedDec 11, 2013 10:47 PM (in response to moveovermike)
In layman's terms, it's the heartbeat of the OS - without it running you wouldn't have a working OS. On my late '09 27" iMac kernel_task typically uses 750mb-1gb of memory as shown in Activity Monitor. What you're seeing sounds normal to me.