How many processes does a Mac normally run? 537 on ours, and why that is fine
A Mac runs hundreds of processes at once. Ours had 537 and 3,500 threads, nearly all asleep. What they are, why the count is normal, and which ones matter.
How many is normal?
top -l 1 -n 0 | grep Processes
ps -ax | wc -l| Reading on our Mac | Value |
|---|---|
| Processes | 537 |
| Running at that moment | 4 |
| Sleeping | 533 |
| Threads | 3,500 |
| Jobs known to launchd | 543 |
Hundreds is normal on any modern Mac. Most are small macOS services, each doing one job: Bluetooth, push notifications, Spotlight, iCloud, widgets. They sleep until needed and use almost nothing while they wait.
Which ones matter?
Not the count, but the few at the top when sorted by CPU, memory or energy. On our Mac a handful accounted for nearly all activity: WindowServer, the browser, the editor and kernel_task.
See it live
Free Mac's System tab reads processor, memory, network and battery once a second, with the busiest processes ranked below, and every tile opens into detail. See also processes you cannot quit.
Related: Why can't I quit a process on my Mac and launchd high CPU.
Common questions
How many processes is normal on a Mac?
Hundreds. Ours had 537, with only 4 running at that moment.
Are too many processes slowing my Mac?
Rarely. Sleeping processes use almost nothing. Look at the few at the top of CPU, memory and energy.
How do I count processes on a Mac?
Run top -l 1 -n 0 | grep Processes in Terminal.