Managing CPU Cycles in a Zone¶
CPU usage in a zone is primarily managed through three different properties.
- CPU cap: The maximum number of CPU cycles that are allocated to a zone. Zones can never consume more CPU cycles than what is allocated to the cap.
- CPU shares: The minimum number of CPU cycles available to a zone at any given time. SmartOS uses the Fair Share Scheduler (FSS) to distribute CPU shares among zones.
CPU baseline: A soft limit on the number of CPU cycles a hosted application can consume. If an application experiences heavy throughput, it can use CPU bursting to temporarily consume CPU cycles that exceed the allocated baseline limit, providing a temporary performance boost.
- CPU Bursting