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2.2.15 MASSIVE performance problems with proxycache enabled
Hi,
with the help of this list I configured a LDAP Proxy Server with overlay
proxycache. My aim is to speed up Netscape/Outlook Address Book access.
First I was really impressed about the increasing performance...
But I found that if you query the LDAP-Server with just a few parallel
queries slapd is only updating his cache and doesn't answer any further
questions.
How to reproduce...
Just open Netscape Addressbook and enter a single character in the
search field. Normally you get back around 100 entries.
The next time you enter the same letter, say 'a', you can see how fast
the answer is available. Now try the same with 'b', 'c' and so on. Very
soon you will see that slapd gives you no answer anymore. If you are
patient enough you will see that slapd comes back after 5-10 minutes or
so...
slapd -d256
[snip]
ENTRY ADDED/MERGED, CACHED ENTRIES=0
ENTRY ADDED/MERGED, CACHED ENTRIES=0
ENTRY ADDED/MERGED, CACHED ENTRIES=0
ENTRY ADDED/MERGED, CACHED ENTRIES=0
ENTRY ADDED/MERGED, CACHED ENTRIES=0
ENTRY ADDED/MERGED, CACHED ENTRIES=0
[snip]
Here ist the slapd.conf
allow bind_v2
database ldap
lastmod off
suffix "c=de"
uri "ldap://x3se.presse-data.de:389/";
rootdn "cn=root,c=de"
overlay proxycache
proxyCache bdb 1000000 2 1000 100
# netscape 7.1
proxyAttrset 0 modifytimestamp xmozillausehtmlmail description notes
custom4 cus
tom3 custom2 custom1 birthyear homeurl workurl nscpaimscreenname
countryname com
pany o departmentnumber department orgunit ou title countryname zip
postalcode r
egion st locality l streetaddress postofficebox carphone cellphone
mobile pagerp
hone pager facsimiletelephonenumber fax homephone telephonenumber
xmozillasecond
email mail xmozillanickname displayname commonname cn surname sn givenname
proxytemplate (|(mail=)(cn=)(givenName=)(sn=)) 0 3600
# outlook 2000 SP3 und oe 6
proxyAttrset 1 display-name cn commonName mail otherMailbox givenName sn
surname
st c co organizationName o ou organizationalUnitName URL homePhone
facsimileTel
ephoneNumber otherFacsimileTelephoneNumber OfficeFax mobile otherPager
OfficePag
er pager info title telephoneNumber l homePostalAddress postalAddress
streetAddr
ess street department comment postalCode physicalDeliveryOfficeName
initials con
ferenceInformation userCertificate;binary userSMIMECertificate;binary
labeledURI
Manager Reports IPPhone
proxytemplate (|(mail=)(|(cn=)(|(sn=)(givenName=)))) 1 3600
cachesize 500
checkpoint 64 5
directory /opt/pdldap/openldap/var/openldap-data
index objectClass eq
index cn,sn,givenName,mail pres,eq,sub
pidfile /opt/pdldap/openldap/var/run/slapd.pid
argsfile /opt/pdldap/openldap/var/run/slapd.args
What's wrong?
BTW If you diable all the proxycache stuff the Proxy Server works
perfectly...
Best regards
Andre