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I am running a Ubuntu VirtualBox-VM on my Windows 10 host machine.

After the VM is running for some time (not at the beginning), the process taskhostw.exe uses much of the CPU. I normaly use ssh to connect to the VM, but using a GUI is also possible. I am using a shared folder.

When I shutdown the VM, taskhostw.exe goes back to normal. I was using Process Explorer to investigate the problem, it only showed stuff related to Microsoft or my Antivirus Solution.

Any help is appreciated.

EDIT: The process command is taskhostw.exe Time

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  • Make sure your guest is not using more than one half of your CPUs or Memory
    – anon
    Commented Jun 28, 2023 at 23:37
  • @John Please explain why this could help when the process taking too much CPU is part of the host system.
    – Twistios_Player
    Commented Jun 29, 2023 at 0:23
  • I use Virtual Machines a lot. I keep guests to 1 CPU and 3 to 4 GB of memory. Guests never drag down my host even if the guest is struggling
    – anon
    Commented Jun 29, 2023 at 0:57
  • Use Process Monitor (learn.microsoft.com/en-us/sysinternals/downloads/procmon) to see which kind of activity take place.
    – fpiette
    Commented Jun 29, 2023 at 6:11
  • In Process Monitor, the process with the pid which has the high CPU usage does not generate any output. There is another one running which does create output.
    – Twistios_Player
    Commented Jun 29, 2023 at 17:02

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