Added Fragment scaling #296
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…d so might remove later. Updated SimTraceWorkload to properly handle creating checkpoints Fixed a bug with the updatedConsumers in the FlowDistributor Implemented a first version of scaling the runtime of fragments.
sacheendra
approved these changes
Jan 24, 2025
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Summary
Added runtime scaling of task fragments.
Before, if a tasks was getting less CPU than demanded, the task would not slow down.
In this update, a new method is added that can slow down a task if they get too little cpu.
How the runtime of a task is delayed is based on the selected ScalingPolicy.
Two Scaling policies are added in this update:
To make the scaling work with checkpointing, the snapshotting had to be updated slightly.
Instead of the making the snapshot always costing 100% of the CPU, it will now demand the same amount of CPU as the max demand in the task.
The Checkpointing tests are updated to reflect this change.
External Dependencies 🍀
N / A
Breaking API Changes⚠️
N / A
Simply specify none (N/A) if not applicable.