Subject: port-i386/34464: The slapd daemon ( openldap ) is frozen during an important update of data with an MP kernel
To: None <email@example.com, firstname.lastname@example.org,>
From: None <email@example.com>
Date: 09/04/2006 11:25:00
>Synopsis: The slapd daemon ( openldap ) is frozen during an important update of data with an MP kernel
>Arrival-Date: Mon Sep 04 11:25:00 +0000 2006
>Originator: Cedric DEVILLERS
>Release: NetBSD 3.0
University Paris VII
NetBSD 3.0 NetBSD 3.0 (GENERIC.MPACPI) #0: Mon Dec 19 01:23:45 UTC 2005 firstname.lastname@example.org:/home/builds/ab/netbsd-3-0-RELEASE/i386/200512182024Z-obj/home/builds/ab/netbsd-3-0-RELEASE/src/sys/arch/i386/compile/GENERIC.MPACPI i386
On a system with NetBSD 3.0 MP, the openldap daemon use 99% of CPU, and remains in this state, during an important update of the data. This problem seems related to MP kernel, because with a SP kernel, this problem does not appear.
Computer : Dell PowerEdge 1850 mono processor ( MP kernel because hyperthreading )
NetBSD 3.0 MPACPI
packages : db-4.4.20
The openldap use the bdb backend.
Updating a lot of data in the ldap and the process uses CPU more and more and does not do anything any more.
Use a SP kernel but it's not acceptable.