[Date Prev][Date Next] [Chronological] [Thread] [Top]

Re: (ITS#3851) Berkeley DB Scalability Patch



Hi Jong,

I took a look at the other effects this patch has, i.e., what happens when 
you put OpenLDAP in a mixed RW situation with a version of BDB compiled 
with your patches in place.  The results are devastating.

Without the patch, using a 29% Write, 71% Read scenario:

630.304 operations/second
182.671 modifies/second
447.632 searches/second


With the patch, using a 29% Write, 71% Read scenario:

53.707 operations/second
15.554 modifies/second
38.153 searches/second


As you can see, the performance is more than 10 times worse with the patch 
in place than without it.

This was using the OpenLDAP 2.3.4 release on a 2 CPU SunFire v210 with 2 GB 
of RAM, running Solaris 8.

--Quanah

--
Quanah Gibson-Mount
Product Engineer
Symas Corporation
Packaged, certified, and supported LDAP solutions powered by OpenLDAP:
<http://www.symas.com>