If Cached Files is consuming a lot of memory, don’t fret about it. But if another app needs RAM, macOS will dynamically remove cached data and allocate it to other apps. If you re-launch the Mail app, it’ll launch faster. Once the syncing completes, the %CPU should get reduced.

If you see a spike in CPU usage, this doesn’t indicate a problem. Cloudd is the daemon process that deals with syncing iCloud data.A web browser may show high CPU usage while rendering too many tabs or displaying multimedia content like video.Thankfully, you can fix “kernel_task” high CPU usage on your Mac. It’s common to see this consume more CPU over time. The kernel_task process manages your Mac’s temperature by limiting CPU access to processes that use the CPU intensely.The process will end automatically when done.

This is perfectly normal for a new or recently formatted Mac. The mds and mdworker processes associated with Spotlight might show frequent CPU spikes during indexing.Some processes may occasionally display high CPU usage, but that doesn’t necessarily indicate a problem. To see which processes are consuming excessive resources, choose View > All Processes and click on the % CPU column to sort them by usage.

Mac view cpu usage