WhySlow
Make sense of
a slow Mac.
Start with the symptom you can see. Change one thing at a time, and check whether it helped.
Why is my Mac slow?
Separate CPU load, memory pressure, storage and network problems before choosing a fix.
Memory pressure, explained
Understand the graph, compressed memory and swap without chasing an empty RAM meter.
Running AI on your Mac
Check local model load, context size and shared memory. Know what a browser AI session can tell you.
Beyond Activity Monitor
What Activity Monitor shows, what it leaves out, and when an explanation helps more than a number.
A process you don’t recognize?
Look up macOS services, app helpers and virtual machines in the process library.
Frequently searched processes
For installation, permissions and licenses, visit WhySlow support. For product questions, read the FAQ.