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> Date: Thu, 18 Apr 2013 10:41:40 -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 5:21 PM +0000 Chris Card <ctcard@hotmail.com> > wrote: > > >> 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 > > So drop your maxsize to 32GB from 400GB. Clearly you have no need to > exceed your total RAM. > I'll give that a try. I had perhaps been taking the advice given in the slapd-mdb man page too seriously: "Note: It is important to set this to as large a value as possible, (relative to anticipated growth of the actual data over time) since growing the size later may not be practical when the system is under heavy load." Chris |