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Wednesday, July 12 • 11:35 - 11:55
Intel New QoS (RDT) Features Introduction - Yi Sun, Intel

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Accompanying with Cloud Services extension, more and more applications/VMs work on a single platform concurrently. This causes serious contention to shared resources (e.g. LLC, L2 Cache, Memory Bandwidth). Because of that, Intel introduces QoS (named as RDT, Resource Director Technology, now) features to monitor and control the usage of these shared resources. So far, Intel has enabled CMT/MBM for monitoring and L3 CAT/CDP for controlling on Xen. Based on successful applications of these features and new requirements from industry, Intel introduces new shared resource controlling features (e.g. L2 CAT and MBA) in its latest chips to provide ways to configure and control the usage of cache and memory bandwidth. To make more users get these features and enjoy the performance improvement, Intel is trying to push these features into Xen. The original codes of QoS only focus on implementing L3 CAT and CDP so that the extendability is not good. To make codes be more flexible, we refactor the codes to generate an extendable infrastructure so that it would be easy to add a new feature. This presentation will introduce above things in details to make the audience be clear about what QoS features are, how we design and implement them on Xen and the benefits users can get.


Yi Sun

Software Engineer, Intel
Yi joined Intel in 2013. He worked on developing mobile storage drivers (emmc/sd/sdio drivers), Security domain to lead critical bug fix and new features development on Android. In June 2016, he transferred internally to join VMM Enabling team to develop features (New Instruction... Read More →

Wednesday July 12, 2017 11:35 - 11:55
Grand Ballroom

Attendees (4)