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  1. Virtualization Strategy
  2. VIRTSTRAT-550

CXL memory tiering support

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    • VIRTSTRAT-548Improved usability for and advanced VM workload density

      Feature Overview

      CXL memory is a mechanism to add memory capacity to hosts and use it as general purpose or specialized memory, effectively expanding it's RAM capacity.
      Usually CXL memory is slower than DRAM.

      Goals

      Allow CXL memory to be configured from openshift in order to allow VMs to benefit from it,

      • Who benefits from this feature, and how? Customers. CXl memory for cost effective memory expansion of nodes with high core count.
      • What is the difference between today’s current state and a world with this feature? Today CXL memory is not supported in RHEL and no ihgh level configuration is available via OCP.

      Requirements

      Requirement Notes isMvp?
       RHEL enablement to support CXL memory    Yes
       (Likely) memtierd for optimal use of CXL memory    Possibly
       Operator to allow CXL to be managed from OpenShift    Yes
       Monitoring & Alerting    Yes
           

      (Optional) Use Cases

      How will the user interact with this feature? 
      Which users will use this and when will they use it?

      • 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

      Provide any additional context is needed to frame the feature.  Initial completion during Refinement status.

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      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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              rhn-support-mtessun Martin Tessun
              fdeutsch@redhat.com Fabian Deutsch
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                Created:
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