Enabe Memory Oversubscription

[mr-karan]

Memory oversubscription is enabled to allow each runner to use additional memory as needed, as per the guide on Memory Oversubscription. This configuration is optimal for certain services which experience random bursts of workloads. Without memory oversubscription, the idle memory of the host would be underutilized as it would be hard-limited across services.

• Add variable: memory_oversubscribe: true/false (default: false for backward compat)
• Spawn the services and wait for the cluster to be joined
• Enable it