What were you trying to do that didn't work?

CPU usage for the LDAP server went wild under normal operations.
The usage stayed high for hours until the IDL scan limit was decreased to a few thousands.

What is the impact of this issue to you?

The impact was pretty significant since the whole IdM cluster was not responding to client queries.
Many applications were stopped or were hitting timeouts, having a huge impact on end customers.

Please provide the package NVR for which the bug is seen:

cat etc/redhat-release
Red Hat Enterprise Linux release 8.10 (Ootpa)
grep 389-ds installed-rpms
389-ds-base-1.4.3.39-11.module+el8.10.0+22741+07f42c75.x86_64 Thu Feb 27 12:08:15 2025
389-ds-base-libs-1.4.3.39-11.module+el8.10.0+22741+07f42c75.x86_64 Thu Feb 27 12:08:14 2025

How reproducible is this bug?:

The issue was happening for several days at customer site.

Steps to reproduce

Issue happened at a customer site.

Expected results

Working IdM cluster.

Actual results

LDAP server was taking lots of CPU making the IdM server unresponsive.