Feature Overview

With VIRTSTRAT-65 descheduler can balance VMs according to the CPU utilization.
This feature is a follow up and will extend the work to also balance according to memory utilization.

Goals
Provide high-level goal statement, providing user context and expected user outcome(s) for this Initiative

• Who benefits from this feature, and how? Infrastructure admin, by having similar memory utilizatio on all nodes, providing a better resource utilization and room for workload spikes
• What is the difference between today’s current state and a world with this feature? Today, memory utilization is not taken into account during rebalancing.

Requirements

(Optional) Use Cases

How will the user interact with this feature? Ideally, rebalacing according to memory utilizatoin is enabled out of the box.

Which users will use this and when will they use it? Probably all users who want to maximize infrastrutre utilization.

• Include use case diagrams, main success scenarios, alternative flow scenarios.  Initial completion during Refinement status.

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Questions to answer...

Out of Scope

1. High-level list of items that are out of scope.  Initial completion during Refinement status.

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Background, and strategic fit

While CPU balancing was first, we also need memory balancing in order to also improve our workload density story.
For increasing workload density, we need to make sure that we maximize memory utiization on all nodes of the cluster, in order to avoid that a single node is getting under pressure.

Assumptions

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Customer Considerations

• Provide any additional customer-specific considerations that must be made when designing and delivering the Feature.  Initial completion during Refinement status.

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Documentation Considerations

Provide information that needs to be considered and planned so that documentation will meet customer needs.  If the feature extends existing functionality, provide a link to its current documentation. Initial completion during Refinement status.

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User Experience Considerations

Provide information that needs to be considered and planned so that the user experience will meet customer needs. These could include impacts to the UI or other areas of the user experience, as well as user research needs. Please add the 'UXD' component to this JIRA if there are User Experience considerations. Initial completion during Refinement status.
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