Full_Name: Marcon Bruno Version: 2.4.36 OS: Ubuntu URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (185.23.92.11)

Hi. We have deployed OpenLDAP on our system, using the following architecture :

One primary master One failover master (mirror mode) 4 replicas

It works very well until the master LDAP receive two many writes /seconds. With 40 writes/seconds, the master LDAP work well about several minutes, then the memory process (slapd) started to increase very quickly, about 20Mo/s !

When all memory and swap is consumed, the OS kill Slapd.

Notes : - Even in disabling all overlays except syncprov, the problem persists - If disabling only syncprov, there is no more problem - If all slaves and mirror master are stopped, there is no more problem

This problem is very annoying. We are looking to a Microsoft solution, even if we have already deployed our solution but obviously, we would like to keep an OpenLDAP solution.

The problem is very easy to replay : one master and one slave are sufficient. Then run 9 windows with a script adding an entry and modifying an entry.