(ITS#5078) slapd high cpu usage

[babu.suresh@pacificlife.com]

Full_Name: Babu
Version: 2.3
OS: RedHAT3
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (198.181.11.27)


Hello,


We are using openldap2.3, BDB 4.5.20 and Rehat3..seeing having high cpu usage of
the slapd process. 

Tried with bellow indexes, we can't use "cachesize" as we have nightly restart
of the process and cache go away (let me know there is way to save cache and it
will be available even after restart of slapd); also we have yearly onetime
users in our system.

Please let me know what are can be done to solve slapd high cpu utilization
problem.

====indexes in slapd.conf====
index   objectClass     eq
index uid pres, eq
=========

=========CPU usage with 3/4 users concurrent login========= 
321 processes: 319 sleeping, 2 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
total   28.0%    0.0%    7.8%   0.0%     0.0%    7.9%   56.0%
cpu00   47.6%    0.0%    8.9%   0.0%     0.3%    2.3%   40.6%
cpu01   32.8%    0.0%    7.7%   0.0%     0.0%    0.7%   58.6%
cpu02   19.4%    0.0%    8.1%   0.0%     0.0%   14.1%   58.2%
cpu03   12.1%    0.0%    6.5%   0.0%     0.0%   14.5%   66.7%
 

PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
30973 xxxxx 19   0  148M 148M  2224 R    15.4  3.1   4:44   0 slapd
30975 xxxxx   18   0  148M 148M  2224 S     9.5  3.1   3:51   3 slapd
32030 xxxxxx   19   0  148M 148M  2224 S     7.9  3.1   3:59   1 slapd