(ITS#5417) ldap memory utilization extremely high

[james@broadsoft.com]

Full_Name: J B
Version: openldap-2.3.27
OS: FreeBSD 4.7-RELEASE-p28
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (67.88.7.2)


The ldap process periodically shows high CPU utilization. It will gradually
climb from an extremely low number to up to 95%, then gradually return to an
extremely low number again.

The server is running ldap to authenticate for a Plone/zope for which the user
needs to log in.

In this instance the process is extremely low. However at times it can reach
85%. During these times, the login process can take up to 30 seconds. It seems
when the utilization is low, the login process is only 1 second.

  PID USERNAME      PRI NICE  SIZE    RES STATE  C   TIME   WCPU    CPU COMMAND
34154 zope2           2   0  1173M  1165M poll   1  21.2H 14.06% 14.06% python2
  370 ldap            2   0   149M 12564K poll   0 469.1H  2.34%  2.34% slapd

another top output shows that slpad actually reached 0%

 PID USERNAME      PRI NICE  SIZE    RES STATE  C   TIME   WCPU    CPU COMMAND
62976 root           28   0  2068K  1064K CPU1   1   0:01 16.10%  3.56% top4
  370 ldap            2   0   149M 12564K poll   0 469.1H  0.00%  0.00% slapd