That’s sounding more likely to be the network between the clusters/DCs than your ovirt setup. Ovirt clusters are just logical groupings, they don’t manage any networking directly themselves.
Some questions to ask: - Does the inter cluster link have a lower than 9000 mtu? - What’s the latency between your clusters? - What’s the bandwidth between them (ie, are you tunneling over the internet or do you have 200G of private fiber between them)? - does the carrier between clusters have a lower MTU? -Darrell > On Mar 15, 2024, at 7:48 AM, John Mortensen <[email protected]> wrote: > > Hi Jorge, > We're using the VirtIO driver, the MTU is 9000 and the physical NICs are 25G. > The ports are grouped in bonds. ( 2 x 25G interfaces in a bond ) > After additional tests we have seen the following: > * between vm's on same host - speed is as expected > * between vm's on different hosts in same cluster - speed is as expected > * between vm's on different hosts and in different cluster - speed is much > lower than expected. > I was curious why the speed drops when we go across clusters, and was > wondering if there are some limitations cluster wide or some tuning cluster > wide that could be tweaked. > /John > > /John > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > 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/[email protected]/message/XNNYC7MXPDPD5I3I5VFVUZSUYP5YRSYU/ _______________________________________________ Users mailing list -- [email protected] To unsubscribe send an email to [email protected] 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/[email protected]/message/MVLY6MR52ZNFHTCIQBD722YGC2MISHLT/
