How do I make a virtual machine with non-standard speed of time (timescale)?

Solution 1:

Virtual-box support exists on a config level as explained on this official ticket:

Btw, this is

VBoxManage setextradata VM_NAME "VBoxInternal/TM/WarpDrivePercentage" 200

for double speed of the guest clock.

GUI support currently not planned.

It does not make the time device to go faster.

Tested and works only for some aspects of every program, "perhaps" since it does not make the time device to go faster, and programs use it for part of their time synchronizations.

In other VM utilities:

Also, the opener of the above ticket mentioned:

bochs and DOSbox can speed up or slow down VM by emulating CPU and/or timer slower or faster than normal.