In order to exercise apps and system resources that use multiple CPU's, and in order to run several multiple CPU VM's on one host, it is useful to cap the % (1-100) of cpu time a virtual CPU can use.
config.vm.cpu.execution_cap = 100 # default
config.vm.cpu.execution_cap = 1 # only use 1% of host CPU time.
In order to exercise apps and system resources that use multiple CPU's, and in order to run several multiple CPU VM's on one host, it is useful to cap the % (1-100) of cpu time a virtual CPU can use.