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Date: Thu, 18 Apr 2013 10:13:10 -0700 From: quanah@zimbra.com To: ctcard@hotmail.com; openldap-technical@openldap.org Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 4:57 PM +0000 Chris Card ctcard@hotmail.com wrote:
I'm using openldap 2.4.35.
olcDbMaxSize: 429496729600 and that's the size of the file on the disk too:
-rw------- 1 ldap ldap 429496729600 Apr 18 16:52 data.mdb -rw------- 1 ldap ldap 8192 Apr 18 17:52 lock.mdb
What's the *actual* size of the mdb db? Remember it is a sparse file.
https://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning_8.0#Notes_on_MDB
I routinely test with DBs in the range of 3 million to 6 million entries, and it is always substantially faster than bdb/hdb.
du -c -h data.mdb returns 16G
Chris