The SystemUIServer process is taking 30% of my CPU. Searching around reveals a Snow Leopard daylight savings bug which is solved by removing the clock from the menubar. I am on Lion and I have tried this without success. Any ideas on how to fix this?
MacOS – Why does SystemUIServer cause high CPU usage
cpumacos
Related Question
- IPhone – How to fix usbmuxd spam in console when iPhone is connected
- MacOS – com.apple.qtkitserver CPU usage on OS X Lion
- MacOS – Very high kernel_task CPU usage after updating to Yosemite 10.10.4
- MacOS – Safari on OS X Yosemite 10.10.4 CPU problem
- MacOS – Why is kernel_task using so much CPU
- MacOS – Mid 2010 MacBook Pro kernel_task extremely high CPU usage (150%+) lags and kernel panics
Best Answer
Same problem here. The problem is caused by a third-party widget that uses the internet. For me, dropbox was the problem. If dropbox is updating my files, systemuiserver keeps using a high amount of CPU .. the only solution is to force quit it (using terminal or activity monitor) or disabling the third-party widget.