kernel_task & Windows_server fix.

[vbctv]

So I found that both my Mac mini & MacBook Air (One running Sierra & the other running High Sierra Beta) has high Ram usage with kernel_task & windows_server using the most Ram. So I contacted Apple Support and they told me to try and clean install, that it could be corrupted files or something wrong with files that could be causing that issue.
So did a Clean install and did not restore from Time Machine, instead did a manual transfer from Time Machine of my files I needed. The apps I just reinstalled.
Now on both machines kernel_task & Windows_server are nowhere to be found in the Activity Monitor and I noticed my machines are running a lot faster and the Ram usage is down on both.
As you can see in the picture, no kernel_task or Windows_server to be found.

 

[DeltaMac]

Make sure that you change the view setting in your Activity Monitor, so it displays "All Processes", and not just "My Processes.
Your screen shot shows Activity Monitor displaying only "My Processes"
"kernel_task" is not one of "My Processes", but will appear in "All processes" list.
Just so you know, kernel_task is that process that the system uses for many tasks. It will usually be in the top 3 or 4 of "All Processes", which is entirely normal.
The other process "WindowServer" is one that the finder might use heavily, depending on the layout on your screen (and the number of windows that you have on the screen at the moment), and can also be completely normal near the top of RAM usage.