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How i can increase performance of OpenLDAP server?
Hello,
# uname -a
SunOS 5.8 Generic_108528-07 sun4u sparc SUNW,Ultra-5_10
# psrinfo -v
Status of processor 0 as of: 07/27/01 13:22:46
Processor has been on-line since 07/20/01 12:04:28.
The sparcv9 processor operates at 360 MHz,
and has a sparcv9 floating point processor.
# top|grep Mem
Memory: 256M real, 114M free, 63M swap in use, 613M swap free
Installed software: OpenLDAP 2.0.11, nss_ldap, pam_ldap.
In base ~1000 records.
Sendmail, pop3, imapd server programm running (they get user info
login/password from ldap base)
# less slapd.conf
include /usr/local/etc/openldap/schema/core.schema
include /usr/local/etc/openldap/schema/cosine.schema
include /usr/local/etc/openldap/schema/nis.schema
pidfile /usr/local/var/slapd.pid
argsfile /usr/local/var/slapd.args
database ldbm
suffix "o=DOM, c=ORG"
rootdn "cn=Manager, o=DOM, c=ORG"
rootpw secret
directory /usr/local/var/openldap-ldbm
sizelimit 2
idletimeout 60
index default pres,eq
index objectClass,uid,userPassword,gidNumber,ou
index cn,sn pres,eq,sub
cachesize 1500
dbcachesize 1000000
dbnolocking
dbnosync
# pwd
/usr/local/var/openldap-ldbm
# ls -ls|sort -n
8 -rw------- 1 root 8192 Jul 25 19:38 nextid.dbb
25 -rw------- 1 root 24584 Jul 26 12:54 nextid.gdbm
45 -rw------- 1 root 45080 Jul 27 12:16 gidNumber.gdbm
45 -rw------- 1 root 45080 Jul 27 12:49 ou.gdbm
69 -rw------- 1 root 69656 Jul 27 12:13 objectClass.gdbm
112 -rw------- 1 root 106496 Jul 27 12:13 uid.gdbm
112 -rw------- 1 root 114968 Jul 27 12:15 userPassword.gdbm
264 -rw------- 1 root 272030 Jul 26 12:54 dn2id.gdbm
296 -rw------- 1 root 290816 Jul 25 19:38 dn2id.dbb
544 -rw------- 1 root 569354 Jul 27 12:27 cn.gdbm
568 -rw------- 1 root 565762 Jul 26 16:39 id2entry.gdbm
592 -rw------- 1 root 610314 Jul 27 12:27 sn.gdbm
608 -rw------- 1 root 614400 Jul 25 19:41 id2entry.dbb
# ls /var/mail|wc -l
973
# wc -l /etc/passwd
17 /etc/passwd
(971 files in /var/mail - mail boxes users from ldap base)
# date; time ls -ls /var/mail
Fri Jul 27 13:33:03 MSD 2001
...
...
real 1:22.6
user 1.3
sys 1.0
(number of conn: netstat -n|grep 389)
Fri Jul 27 13:33:08 MSD 2001
Number of conn : 10
load averages: 1.06, 2.15, 2.98 13:33:07
14871 root 8 43 0 10M 9888K run 23:27 19.47% slapd
Fri Jul 27 13:33:15 MSD 2001
Number of conn : 10
load averages: 1.25, 2.16, 2.98 13:33:14
14871 root 8 45 0 10M 9888K run 23:33 39.06% slapd
Fri Jul 27 13:33:23 MSD 2001
Number of conn : 10
load averages: 1.31, 2.15, 2.97 13:33:22
14871 root 8 43 0 10M 9888K run 23:40 54.61% slapd
Fri Jul 27 13:33:30 MSD 2001
Number of conn : 10
load averages: 1.42, 2.16, 2.96 13:33:29
14871 root 8 43 0 10M 9888K run 23:46 63.46% slapd
Fri Jul 27 13:33:37 MSD 2001
Number of conn : 10
load averages: 1.54, 2.16, 2.96 13:33:36
14871 root 8 44 0 10M 9888K run 23:52 69.64% slapd
Fri Jul 27 13:33:44 MSD 2001
Number of conn : 10
load averages: 1.59, 2.16, 2.95 13:33:43
14871 root 8 45 0 10M 9888K run 23:59 74.49% slapd
Fri Jul 27 13:33:51 MSD 2001
Number of conn : 9
load averages: 1.61, 2.15, 2.94 13:33:50
14871 root 8 42 0 10M 9888K run 24:05 77.31% slapd
Fri Jul 27 13:33:58 MSD 2001
Number of conn : 9
load averages: 1.67, 2.15, 2.94 13:33:57
14871 root 8 45 0 10M 9888K run 24:11 79.53% slapd
Fri Jul 27 13:34:06 MSD 2001
Number of conn : 9
load averages: 1.76, 2.16, 2.93 13:34:05
14871 root 8 43 0 10M 9888K run 24:17 80.90% slapd
Fri Jul 27 13:34:13 MSD 2001
Number of conn : 9
load averages: 1.83, 2.16, 2.93 13:34:12
14871 root 8 43 0 10M 9888K run 24:23 81.92% slapd
Fri Jul 27 13:34:20 MSD 2001
Number of conn : 9
load averages: 1.82, 2.15, 2.92 13:34:19
14871 root 8 43 0 10M 9888K run 24:30 83.42% slapd
Fri Jul 27 13:34:26 MSD 2001
Number of conn : 9
load averages: 1.82, 2.14, 2.91 13:34:26
14871 root 9 33 0 10M 9896K sleep 24:35 83.70% slapd
WOW! :-/
I think, that 84% CPU for `ls -ls` command is VERY much... :(
How can i:
1. Increase performance of ldap base?
(i read the http://www.openldap.org/faq/data/cache/190.html)
2. Decrease loading of CPU?
What hardware i need for serve ldap base with ~1000 records?
thank you,
--
Best regards from future,
HillDale.
Pavel mailto:mcfly@jet.msk.su