[Libguestfs] [PATCH v2v] v2v: Set the number of vCPUs to same as host number of pCPUs.
So it didn't make any noticable difference in my test. I wonder if
the test guest I'm using (Fedora 32 using dracut) doesn't use parallel
compression?
However I don't think it can cause a problem and it seems obvious that
it could benefit some cases.
Rich.