[ovirt-users] ImageIO Performance

Hi All, We backup our VM's with a custom script based on the https://github.com/oVirt/python-ovirt-engine-sdk4/blob/main/examples/back... example. This works fine, but we start to see scaling issues. On VM's where there are a lot of dirty blocks, the transfer goes really slow (sometimes only 20MiB/sec). At the same time we see that ovirt-imageio process sometimes uses 100% CPU (its single threaded?). Is this known behavior? Are there ways to optimize imageio? Or any other ways to improve the download speed? Thanks Jean-Louis