A memory guarantee is a percentage of container’s RAM that said container is guaranteed to have.
Note
Important: The total memory guaranteed to all running virtual environments on the host must not exceed host’s physical RAM size. If starting a virtual environment with a memory guarantee would increase the total memory guarantee on the host beyond host’s physical RAM size, said virtual environment will not start. If setting a memory guarantee for a running virtual environment would increase the total memory guarantee on the host beyond host’s physical RAM size, said memory guarantee will not be set.
For containers, the memory guarantee value is set to 0% by default. To change the default value, use the prlctl set --memguarantee command. For example:
# prlctl set MyCT --memguarantee 80
To revert to the default setting, run
# prlctl set MyCT --memguarantee auto
