PowerVM

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  • 1.  100Gb VIOS SEA Configuration

    Posted 30 days ago

    Hi, has any one configured SEA over 100G?  can some one share the bandwidth restriction when creating ans assigning veth to lpar?  



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    FAISAL SIDDIQUE
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  • 2.  RE: 100Gb VIOS SEA Configuration

    Posted 29 days ago

    Make sure you take a look at the new Virtual Ethernet Software Multi Queue capability. It's designed to allow the AIX virtual ethernet driver to scale better in terms of bandwidth and latency with evolved network physical adapters with a speed of 100G and 200G speed (for example).

    https://community.ibm.com/community/user/power/blogs/lokesh-kambadur/2024/12/19/virtual-ethernet-software-multi-queue



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    Chris Gibson
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    Original Message


  • 3.  RE: 100Gb VIOS SEA Configuration

    Posted 29 days ago

    Thank you chris.  But in my case, all the Lpars are Redhat Linux based.



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    FAISAL SIDDIQUE
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    Original Message


  • 4.  RE: 100Gb VIOS SEA Configuration

    Posted 28 days ago

    To add to Mr. Greene's post, I attach files providing current information on SR-IOV. 

    Uploading... Upload file


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    Satid S
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    Original Message


  • 5.  RE: 100Gb VIOS SEA Configuration

    Posted 29 days ago

    I would strongly recommend using SR-IOV instead of SEA.  I think all of the 100g adapters support SR-IOV.  Using SR-IOV will put the load of virtualization in the hypervisor and adapter.  You will need more memory assigned to the hypervisor, but that is offset by reduced requirements for buffers in vios. 

    If you need failover, use vNIC.



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    Vincent Greene
    IT Consultant
    Technology Expert labs
    IBM
    Vincent.Greene@ibm.com


    The postings on this site are my own and don't necessarily represent IBM's positions, strategies or opinions.
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    Original Message


  • 6.  RE: 100Gb VIOS SEA Configuration

    Posted 28 days ago

    I would also recommend SR-IOV, VNIC, or HNV when virtualizing 100G. All three of these technologies should scale to higher bandwidth and transaction performance than SEA, with reduced overhead. Since you mention you are using Linux, I would also recommend following the suggestions in the Linux on Power performance guide, for any of these technologies. Linux also has a similar virtual ethernet multi-queue technology as was mentioned for AIX, and the guide provides instructions how to enable it.

    https://community.ibm.com/community/user/power/viewdocument/power-linux-io-performance-tuning?CommunityKey=987be361-8459-42fa-86fa-4ffdd70a8583&tab=librarydocuments



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    Brian King
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    Original Message