If you runing FreeBSD on VirtualBox, your laptop may experience overheat. Some laptop, such as HP product, provide advance BIOS seting that allow virtualization feature. You need to enable that feature to minimize CPU heat.
Heere I show you another method to minimize CPU heat by set up kernel guest speed, FreeBSD in my case.bott
Log in as root, then type:
ee /etc/rc.conf
Restart your guest OS.
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| CPU performance before setting |
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| CPU performance after setting |
You may also activate additional feature for VirtualBox:
# cd /usr/ports/emulators/virtualbox-ose-additions && make install clean
then add lines to /etc/rc.conf:
vboxguest_enable="YES"
vboxservice_enable="YES"
Restart your guest OS.