Despite its documentation vanishing, it’s clear that GCD does a lot more than provide an easy way to concurrency for app developers.
I went to close an enlarged view of a painting, and a Macintalk-like robot voice announced that my Mac was compromised.
ps and top are far superior tools for looking at processes than Activity Monitor.
When I play low-bandwidth radio on my iMac, it keeps interrupting, but that does not trouble my MacBook Pro. Why?
What has broken when Preview no longer opens PDF documents? The answer is more complex than it might appear.
Memory use is always in the ‘yellow’, and my Mac grinds to a halt. Why?
SystemUIServer sometimes runs my iMac out of memory. Why?
Although my Mac has 6 GB of memory, I have had to use the purge command with depressing frequency since OS X 10.6, before quitting anything, particularly Safari.
Macs are increasingly reliant on background services, and increasingly vulnerable to their problems. Mastering the services on your Mac will help make it faster and more stable.
When something goes wrong with your Mac, the best clues are usually found in the log. Are you scared to open Console, or panic when you scroll through its contents?