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UID:pretalx-kvm-forum-2024-ZSYR9Z@pretalx.com
DTSTART;TZID=CET:20240922T144500
DTEND;TZID=CET:20240922T151500
DESCRIPTION:Current QEMU live migration device state transfer is done via t
 he (single) main migration channel.\n\nSuch way of transferring device sta
 te migration data reduces performance and severally impacts the migration 
 downtime for VMs having large device state that needs to be transferred du
 ring the switchover phase.\n\nSome examples of devices that have such larg
 e switchover phase device state are some types of VFIO SmartNICs and GPUs.
 \n\nThis talk describes the efforts to parallelize the transfer and loadin
 g of device state for these VFIO devices by utilizing QEMU existing suppor
 t for having multiple migration connections - that is\, by utilizing multi
 fd channels for their transfer\, together with other parallelization impro
 vements.
DTSTAMP:20260305T211340Z
LOCATION:Hall A+B
SUMMARY:QEMU live migration device state transfer parallelization via multi
 fd channels - Maciej S. Szmigiero
URL:https://pretalx.com/kvm-forum-2024/talk/ZSYR9Z/
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