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Automatic CPU and NUMA pinning

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Automatic CPU and NUMA pinning
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287
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CC Attribution 2.0 Belgium:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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In FOSDEM 2019 we presented the addition of high-performance virtual machines in oVirt. With this new VM type, parts of the VM configuration were changed to improve the performance of workloads it runs. In particular, it was useful for CPU-intensive workloads, such as SAP HANA. However, better performance came at the expense of usability. Users were still expected to set various things manually, like CPU and NUMA pinning and hugepages. In this talk, I will guide you through our journey of simplifying and automating the settings of high performance VMs in oVirt. We'll see the evolution of the changes, the challenges we faced, where we are today and what's more to come in oVirt 4.5.