Using Activity Monitor and command tools to assess performance of a content caching server, and diagnosing problems from the log.
Activity Monitor
What you can learn about the processes running on your Mac, its processor cores, even the files which an app has open.
Your Mac has slowed to a crawl, with spinning beachballs and a juddery interface. You open Activity Monitor and read this.
Your Mac goes all sluggish, you open Activity Monitor, and there at the top of the CPU list is kernel_task, taking 100% or more. Why?
How to get all sorts of useful information about a running app or process from LaunchServices: and introduction to using lsappinfo.
What should you do with a Mac whose fans keeping coming on full blast, with high CPU loads from kernel_task, and sluggish performance?
It’s hot, you’re hot, and your Mac has slowed right down. Activity Monitor tells you that it’s kernel_task which is to blame. Is macOS playing up, or what?
More bugs in Calculator and Activity Monitor when printing, dreadful lack of documentation of AppKit, TextKit, and CoreData. No wonder Apple is struggling to sell iPhones in China.
Four versions of the same app to demonstrate different app states in Sierra and High Sierra, and how your apps can join the undead.
This week, I have been attacked by zombies – half-dead apps which appear to have quit automatically, but […]
The Eclectic Light Company 