I used to have no issues with this, but all of a sudden sysmond is using 100% CPU while I have Activity Monitor set to the Memory tab. sysmond runs normally while in any other tab (CPU, Energy, Disk, Network). The problem only occurs on the Memory tab. Turning down the update interval does nothing. I've already restarted and had no other apps open except AM but nothing changes. It still uses 100% while I'm on the memory page. I am using macOS 10.14.6, on a MacBook Pro.
MacOS – sysmond using 100% CPU usage, but only while on the Memory tab
activity-monitorcpumacosmojave
Related Solutions
In Yosmite, it defaults to only showing user processes. To view system process or all process, select
View --> All Processes
or
View --> System Processes
(in the standard app menu at the top of your screen, not within the Activity Monitor window)
Nope. For one, Fx 38.0.1 shows up in my Yosemite 10.0.3.
Energy tab only displays at most 23 items. That could be why.
Related Question
- MacOS – What causes the UserEventAgent to run with 100% CPU usage
- IMac – cpu is 100% used, yet no application shows significant usage
- Activity Monitor show no processes
- Keyboard shortcut to switch between Activity Monitor tabs
- Mac – chmod using 100% CPU resources
- MacOS – VS Code – Code Helper process using more than 100% CPU on macOS
- MacOS – How to stop mDNSResponder from using 90-100% CPU continuously forever on Catalina
Best Answer
I've fixed it. I had shared memory and private memory both checked. Enabling either one seems to cause sysmond to spike in CPU usage, and having neither checked returns sysmond back to its usual state. Odd.