See real-time CPU, network, or disk status in the Dock. It’s easy to keep an eye on your system status without even looking at the Activity Monitor window—you can monitor your CPU, network, or disk usage as a live graph right in the Dock.
Activity Monitor User Guide
View content cache activity in Activity Monitor.
In the Activity Monitor app on your Mac, click Cache (or use the Touch Bar).
If you don’t see the Cache tab in the Activity Monitor window, choose Apple menu > System Preferences, click Sharing, then select Content Caching. After that, quit and then reopen Activity Monitor to view Cache information.
To see data served for a particular period of time, click the pop-up menu above the graph, then choose a time period.
The following content caching statistics are displayed:
Content cache activity | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Data Dropped | Amount of data the content cache downloaded but could not add to its cache. | ||||||||||
Data Served | Total amount of data the content cache has served. When these values are nonzero, the content cache is working. | ||||||||||
Data Served From Cache | Amount of data the content cache has served from its cache. The closer these values are to the Data Served values, the more the content cache is helping. | ||||||||||
Data Served From Origin | Amount of data the content cache downloaded over the internet. | ||||||||||
Data Served From Parents | Amount of data the content cache downloaded from any of its parent content caches. | ||||||||||
Data Served From Peers | Amount of data the content cache downloaded from any of its peer content caches. | ||||||||||
Data Served To Children | Amount of data the content cache served to any of its child content caches. | ||||||||||
Data Served To Clients | Amount of data the content cache served to client Mac computers, iOS devices, iPadOS devices, and Apple TV devices. | ||||||||||
Data Served To Peers | Amount of data the content cache served to any of its peer content caches. | ||||||||||
Data Uploaded | Amount of data uploaded from clients through the content cache. | ||||||||||
Maximum Cache Pressure | How urgently the content cache needs more disk space. Lower cache pressure is better. If these values are higher than 50%, you should assign the cache more space, move the cache to a larger volume, or add content caches. | ||||||||||
Activity Monitor Mac Os
Activity Monitor might show that a system process named kernel_task is using a large percentage of your CPU, and during this time you might notice more fan activity.
Mac Activity Monitor Shortcut
One of the functions of kernel_task is to help manage CPU temperature by making the CPU less available to processes that are using it intensely. In other words, kernel_task responds to conditions that cause your CPU to become too hot, even if your Mac doesn't feel hot to you. It does not itself cause those conditions. When the CPU temperature decreases, kernel_task automatically reduces its activity.