https://bugs.openldap.org/show_bug.cgi?id=9517
--- Comment #2 from Michael Ströder michael@stroeder.com --- (In reply to gilbert.kowarzyk from comment #1)
that is, the parallelism is not respected (it shows "p=1" instead of the expected "p=6".
Is your OpenLDAP installation using libsodium? AFAIK libsodium ignores parallelism > 1.