Full_Name: Pavlos Parissis Version: 2.4.11 OS: Linux 2.6 RH AE 4.6 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (77.250.22.95)

Hi,

During performance testing with SLAMD we noticed the dncache exceeds the limit. As a result the system starts to swap a lot and the responses of slapd are very slow.

Here are the facts:

slapd.conf monitoring on tool-threads 4 cachesize 450000 dncachesize 450000 idlcachesize 450000 cachefree 90000

# ldapsearch -x -D "cn=xxxx" -w xx -b 'cn=database 2,cn=databases,cn=monitor' -s sub '(objectclass=*)' '*' '+' | grep -i Cache

olmBDBEntryCache: 398306 olmBDBDNCache: 482001 <<========== olmBDBIDLCache: 449999

# slapd -V @(#) $OpenLDAP: slapd 2.4.11 (Sep 11 2008 10:58:58) $ root@node3:/usr/src/redhat/BUILD/openldap-2.4.11/servers/slapd

#db_stat -V Berkeley DB 4.6.21: (September 27, 2007)

# uname -r 2.6.9-67.ELsmp

# cat /etc/redhat-release Red Hat Enterprise Linux AS release 4 (Nahant Update 6)

Cheers, Pavlos