8.10.3. tickpolicy

The tickpolicy attribute assigns the policy used to pass ticks on to the guest virtual machine. The following values are accepted:

Table 8.4. tickpolicy attribute values

delayContinue to deliver at normal rate (so ticks are delayed).
catchupDeliver at a higher rate to catch up.
mergeTicks merged into one single tick.
discardAll missed ticks are discarded.