RE: How to improve performance with MDB backend?

[Quanah Gibson-Mount <quanah@zimbra.com>]

--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.

--Quanah



--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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