The Miget Fair Scheduler keeps your applications responsive by allocating CPU based on real-time demand instead of static quotas. This is a key innovation that enables running multiple applications on a single cloud resource at a fixed price.

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How It Works

The Fair Scheduler provides dynamic and fair CPU allocation between multiple applications running on the same shared cloud resource. Its main goals are:
  • Maximum Resource Utilization - When one application is inactive, another can use the unused CPU cycles, increasing overall efficiency
  • Starvation Prevention - No application will be completely deprived of CPU access, even under heavy load from others, ensuring basic responsiveness
  • Predictable Performance - Maintaining stability and performance for all applications despite competition for limited resources

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Example: 0.5 CPU Plan

Consider a namespace with a 0.5 CPU plan running two applications. Both apps have access to the full 0.5 CPU - here’s how the scheduler handles different scenarios:
ScenarioApp AApp BResult
Only App A needs CPUDemands 0.5IdleApp A gets full 0.5 CPU
Only App B needs CPUIdleDemands 0.5App B gets full 0.5 CPU
Both need CPUDemands 0.5Demands 0.5Each gets 0.25 CPU (fair split)
Burst scenarioUsing 0.5Suddenly needs burstApp B gets 0.5 temporarily, then scheduler lowers both to 0.25
The key insight: applications can burst to use the full CPU allocation when others don’t need it, but when demand exceeds supply, the scheduler fairly distributes resources.