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Friday, October 30 • 15:00 - 15:30
QEMU Snaphosts Are So Slow. Really? - Denis Lunev, Virtuozzo

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QEMU snapshots made via savevm interface are at the moment synchronous and slow. This happens not only due to not optimal code but also due to a gap between migration and block layer concepts. This presentation tries to cover this gap and provides some approaches to faster make snapshot and revert to snapshot operations. The talk will cover optimizations to the currently available synchronous SaveVM interface and will also cover asynchronous operations, including asynchronous revert to snapshot, which would require developing a memory page index for migration stream.

Speakers
DL

Denis Lunev

Team Lead, Virtuozzo
Denis Lunev is working in Virtuozzo around 20 years dealing with various aspects of virtualization, both in virtual machines and container worlds. Right now is working QEMU optimizations.



Friday October 30, 2020 15:00 - 15:30 GMT
KVM Theater
  KVM Track 2
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