CPU at 100%

Discussions related to using VirtualBox on Windows hosts.
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Hershey
Posts: 2
Joined: 15. Sep 2019, 01:32

CPU at 100%

Post by Hershey »

My VB Guest CPU hovers around 100% most of the time. The host stays around 20-30%.
Host is a Dell Precision Workstation with a Xeon E5 processor with 8 logical cores.
With the guest shut down I was able to change the number of processors. I chose 4. We'll see what happens.
Host CPU -  Device Manager, Task Manager, Resource Monitor.JPG
Host CPU - Device Manager, Task Manager, Resource Monitor.JPG (92.88 KiB) Viewed 577 times
Guest CPU - Device Manager, Task Manager, Resource Monitor.JPG
Guest CPU - Device Manager, Task Manager, Resource Monitor.JPG (117.68 KiB) Viewed 577 times
Hershey
Posts: 2
Joined: 15. Sep 2019, 01:32

Re: CPU at 100%

Post by Hershey »

Excellent result. The CPU is now hovering around 20-30%
socratis
Site Moderator
Posts: 27329
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: CPU at 100%

Post by socratis »

Typically we need a ZIPPED "VBox.log" to make an assessment about the available cores on you host. You can search for it yourself if you open the log and search for "Physical cores". Then you need to remember that simple rule:
  • Total CPUs for your guests + 1 Host CPU cores.
  • Total RAM+vRAM+overhead for your guests Host available RAM + some.
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
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