Why are uploads from OpenStack glance into ceph noticeably slower than uploads with the rbd CLI client

Solution In Progress - Updated -

Issue

Why are uploads from OpenStack glance into ceph noticeably slower than uploads with the rbd CLI client? Uploads into Ceph via glance seem to be slower by an order of magnitude of about 3x to 4x compared to when one uses the rbd CLI command.

Environment

Red Hat Enterprise Linux OpenStack Platform 7.0
Red Hat OpenStack Platform 8.0
Red Hat OpenStack Platform 9.0
Red Hat Ceph Storage 1.3

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