Environment:
ESXi 6.5U1/U2
vCenter 6.7U1b
I have several ESXi clusters under the vCenter and the ESXi clusters are physically located around the world.I don't do vMotion all the time but it has been working pretty well especially in some of the clusters on 10Gb networks. I upgraded my vCenter from 6.5 to 6.7U1b recently but have not tried vMotion until today I need to upgrade the ESXi from 6.5 to 6.7. However I then realize vMotion performance is so horrible it's impractical. What used to take less than a minute over 10Gb to migrate only the computer state, not even the storage (backend datastore is shared NFS) and now takes an hour to migrate just one VM. Digging into logs did not find anything useful. Note since there has been no network changes, it does not make sense the common causes such as mismatched MTU, etc is the root cause (I checked them anyway and they are fine).
Are there other logs to check other than VM's vmware.log and host's vmkernel.log? Anyone has similar issue?
Thank you.