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June 25 - 27 - Beijing, China
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Monday, June 25 • 16:40 - 17:20
Better Live Migration on KVM/QEMU - Guangrong Xiao, Tencent Cloud (slides attached)

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Live Migration plays a very important role in the cloud industry, e.g, it's a key component for high availability, load balance, etc. Currently Qemu/KVM gains some notable features to improve the performance of live migration, for example, it supports auto-converge, compress, xbzrle and post-copy, etc, however, in Tencent Cloud we met some challenges to enable them in our productions and realized that they do not work well as we expected in the real world.

In this presentation, we are going to present the issues & shortages we found on current KVM/QEMU, then show our solutions to resolve them which will include lockless multithread mode, better vCPU throttle algorithm, redesigning memory mode for compression and xbzrle and so on. Besides that, we will also share the new ideas we innovated to make live migration better.


Xiao Guangrong

Senior Software Engineer, Tencent Cloud
Xiao Guangrong is a Linux Kernel developer working on Ftrace, MM, Btrfs but his main interest is KVM. As a active contributor, he was invited to give some presentations at some conferences: Japan LinuxCon 2011, Japan LinuxCon 2012 China CLK 2012, KVM Forum 2016, 2017, 2018. He is... Read More →

Monday June 25, 2018 16:40 - 17:20 CST