OpenLDAP MDB vs HDB performance
|This article applies to the following ZCS versions.|
Zimbra OpenLDAP Server
Performance differences between the mdb and hdb backends for OpenLDAP
Using real-world client data, I've compiled some brief performance differences between using the mdb and hdb backends to OpenLDAP with Zimbra. This particular client has 25,208 entries in their LDAP database. I dumped their accesslog and converted it to LDIF to give me a full weeks worth of real change data, and then ran that back against the database. This results in approximately 28,000 modifications performed against the DB.