Hello,
We're trying to figure out how to improve the storage performance on
Windows VM's running on KVM hosts with Ceph RBD storage. We get good
performance with Linux VM's but Windows is pretty sluggish. We've found
so far that Choosing "OS Type: Windows PV" makes the storage a bit
faster, but it's still much slower than on Linux. This is all with the
virtio guest-tool drivers for Windows installed. Are there any changes
that can be made? We considered doing this with an ISCSI gateway instead
of RBD but from my understanding Cloudstack doesn't support that with KVM.
The hypervisors run CentOS 7 which uses libvirt 4.5.0. We're wondering
if running a more up-to-date version of libvirt could help. Are there
any repositories with those packages?
Thank you,
Peter Klein
