--On Tuesday, October 03, 2017 11:03 AM -0700 rammohan ganapavarapu < rammohanganap(a)gmail.com&gt; wrote: > Quanah, > > > Quick question regarding "maxsize" in mdb, slapd-mdb man page says we > have to preallocate the db size based on future growth of your data, that > means will it create a data.mdb of maxsize? what i read from docs is, mdb > loads whole database into memory, is it right? if my db size is grater > then my RAM how does mdb handles? do we have any configuration options to > set RAM allocation for mdb as i may have other applications sharing the > same RAM? > It uses RAM in accordance to the size of the database, not the maxsize. Generally, you set the maxsize value to something really large and forget about it. I would note you already have a fairly large database. However, MDB should use significantly *less* RAM than your old back-hdb database overall, because your old back-hdb DB had to use multiple caches in RAM as a part of the slapd process (cachesize, idlcachesize, dncachesize) in addition to the BDB cache (set_cachesize in DB_CONFIG). --Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>