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RE: How to improve performance with MDB backend?



--On Thursday, April 18, 2013 2:27 PM +0000 Chris Card <ctcard@hotmail.com> wrote:

I am also interested in this thread. I've been doing some comparison
tests between MDB and BDB using openldap 2.4.35, and find that the BDB
backend is consistently much faster for writes. For example, modifying
10000 DNs and changing one attribute using ldapmodify takes about 80
seconds with an MDB backend and about 18 seconds with a BDB backend. Is
there any chance that MDB write performance will catch-up (or even
overtake) BDB write performance?

Did you make the changes to the DB flags for MDB that I noted the other day? For me, MDB writes are a minimum of 65 times faster than writes with BDB/HDB, even when BDB/HDB use an SHM key.

--Quanah


--

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