Hi John, Your question is interesting. Are you handing the physical card to the VM (passthrough) or using the VirtIO driver? How is the MTU configuration of your interfaces on the host?
BR. Em ter., 12 de mar. de 2024 às 11:32, John Mortensen <j...@b4restore.com> escreveu: > Hi, > We are experiencing some network limitations on our virtual machines, we > have done some initial testing to pinpoint the exact issue. > Hardware: > 2 x 25G NICs per physical machine > 2 x 100G interlinks between datacenters > > iPerf test between two VMs in same host on same cluster and same > datacenter reveals ~20GB/s (what is more or less expected) > iPerf test between two VMs in differet host on same cluster and same > datacenter reveals ~20GB/s (what is more or less expected) > iPerf test between two VMs in differet host on different cluster and > different datacenter reveals ~10GB/s (what is half or less than expected) > > There are no firewalls or other identified blockeing equipment between the > datacenters. > > The only difference, as I see it, are traffic going across the 100G > interlinks. > Are there anything that needs to be tuned / setup in the NICs either on > the VM or the host to be able to get higher speed between the datacenters? > > /John > _______________________________________________ > Users mailing list -- users@ovirt.org > To unsubscribe send an email to users-le...@ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/HAJBDJVKH3KCTGGCVXWOW2CZS3EW6DAF/ > -- Att, Jorge Visentini +55 55 98432-9868
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