time sharing

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time sharing

the joint use of a COMPUTER facility by two or more users in return for a rental payment.
the joint use of a holiday home by several users, each of whom contributes a share of the capital cost of the property and upkeep expenses in return for the right to use the property for specified weeks each year.

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When a backup VM is not occupied by its dedicated service VM, it can be used by a failed service VM, which is called time sharing of backup VMs.

The time sharing of backup VMs can be achieved by starting a specific application on demand.

In this section, we first present our simple and effective heuristic time sharing policy.

If each backup VM is regarded as a bandit, the time sharing of backup VMs turns out to be a RMAB process.

With the known failure and restoration models of primary VMs, the objective of the heuristic time sharing policy is given by:

Before starting the heuristic time sharing policy, the state-transition matrices of the backup VMs and the initial belief state vector [OMEGA](1) are determined according to the failure and restoration models of the primary VMs.

For performance evaluation of the heuristic time sharing policy, we propose four metrics: backup assurance rate, idle time utilization of backup VMs, utilization of backup VMs and policy regret.

A heuristic time sharing policy for backup resources in cloud system

Photo: The $100 million experiment in resort time sharing was built to Wilson's own specifications, right down to the room design and that Florida essential--the swimming pool.