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Number of vhost threads is defined by boot-time CPUs #2815

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c3d opened this issue Oct 8, 2021 · 1 comment
Open

Number of vhost threads is defined by boot-time CPUs #2815

c3d opened this issue Oct 8, 2021 · 1 comment
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area/networking Networking bug Incorrect behaviour
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c3d commented Oct 8, 2021

The number of vhost threads is defined by the number of CPUs given to qemu at boot time.

This can limit networking performance. A workaround is to change default_vcpus using an annotation, but it would be nice to have a better mechanism to get a larger number of threads for network-intensive workloads.
@c3d c3d added bug Incorrect behaviour needs-review Needs to be assessed by the team. area/networking Networking labels Oct 8, 2021
@ariel-adam ariel-adam removed the needs-review Needs to be assessed by the team. label Nov 16, 2021
@c3d c3d changed the title Number fo vhost threads is defined by boot-time CPUs Number of vhost threads is defined by boot-time CPUs Nov 16, 2021
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c3d commented Nov 16, 2021

Probably made easier thanks to following Hurray: kubernetes/kubernetes#104886

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