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Re: scaling openldap for performance

--On Friday, June 04, 2004 5:40 AM -0700 Trevor Warren <trevorwarren@yahoo.com> wrote:

Hey there Fellas,

  Having tread through the archives for a long time i
have concluded with some load/performance tests.

 Openldap scales *wonderfully* with respect to read
performance. Towards testing the same for write
performance i performed the following:

With Zero think time we hit openldap with 20
simultaenous users. The db has 1million records.  5
mins thro the test i have a seg fault. I try
restarting the same but the server refuses to re-read
the db unless i re-create the same. Find this very
strange. Can i avoid this In-consistency????

Me brought this DB size to 100 Addressbook records
and pounded the server with 20users and Zero think
time. Still server crashes.

Brought the users to 10 users and 100 records.
Bombarding the server with Zero think time. It now
survives and pulls through the test.

 HW Arch is : HP BLade20p, 2 CPU, 1GB RAM, RHEL AS2.1,
RAID 0+1 on a SAN.

 Am quite confused to be true.  Logging is disabled
cause we found its over head is simply too much and
hinders response times.

 Lemme know of any runtime/compile time options
towards boosting performance please. Thanks in

What version of OpenLDAP are you using?
What database backend are you using?
What version of the database backend are you using? Does it have all applicable patches?
Is your database backend configured via its configuration mechanisms?


Quanah Gibson-Mount
Principal Software Developer
ITSS/Shared Services
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html