Ricky Zhou (ricky@fedoraproject.org) said:
Of course, this does not say 'how many computers out there have package X'. Maybe it fails and one needs to download a package twice and so on. But I think this would be a first great approximation.
I don't think yum requests packages specifically from mirrormanager. It gets a mirror URL from mirrormanager, then downloads everything else directly from the mirror that it gets back.
Ricky's analysis is correct. Mirrormanager logs only tell us what version/arch someone is looking for, not what packages.
Bill