Re: serious concurrecy problem openldap on redhat AS

[Howard Chu <hyc@symas.com>]

Maxi lubian wrote:

> Hello!
>
> We are experience serious problems with our OpenLDAP on our
> Linux Redhat AS EE 3.0.
> We run an openldap v 2.0.27 on a dual machine with 2.5 GB memory.
How surprising.

> We have 80.000 entries in a ldbm backend database and cant make
> search and modify cuncurrently. This causes serious problems when large
> reads are made that take aprox 4-5 min. During those reads we cant 
> make any
> writes and the client that tries to do so hangs until the read is 
> finished.

This is a known characteristic of back-ldbm. Since your OpenLDAP release 
is about 2 years old and two generations out of date, you probably 
should upgrade to a modern release (2.2.17) and use back-bdb or back-hdb 
instead.

--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
 Symas: Premier OpenSource Development and Support