[Date Prev][Date Next]
[Chronological]
[Thread]
[Top]
Re: dynlist performance
Am Wed, 27 Nov 2013 10:46:40 +0100
schrieb "POISSON FrÃdÃric" <frederic.poisson@admin.gmessaging.net>:
> Hello,
>
> I'm testing the dynlist overlay on OpenLDAP 2.4.38 because i have a
> static group of around 10K uniqueMember. I want to have now a
> equivalent group with dynlist.
>
> I have configured my overlay dynlist like this :
> dn: olcOverlay={2}dynlist,olcDatabase={1}bdb,cn=config
> objectClass: olcOverlayConfig
> objectClass: olcDynamicList
> olcOverlay: {2}dynlist
> olcDlAttrSet: {0}groupOfURLs memberURL uniqueMember
>
> And my group is quite like OpenLDAP example in documentation :
>
> dn: cn=GeneralisationDyn,ou=Groups,dc=example,dc=com
> objectClass: top
> objectClass: groupOfURLs
> cn: GeneralisationDyn
> memberURL:
> ldap:///ou=People,dc=example,dc=com??one?(objectClass=person)
> uniqueMember: uid=user1,ou=People,dc=example,dc=com uniqueMember:
> uid=user2,ou=People,dc=example,dc=com [...]
>
> My backend is Berkeley DB and i have tune it in order to have quite
> fast responses on searches, and locally on my server (virtualized
> with a single proc), it take that time to return the entries found by
> memberURL :
>
> real 0m0.272s
> user 0m0.040s
> sys 0m0.023s
>
> If i run an ldapsearch to see all uniqueMember of my dynamic group it
> take around 8 to 10 seconds to have the output !
>
> Why a so big difference of response time in a search of entries and a
> search of uniqueMember inside a dynamic group ? Is there some tuning
> for dynlist plugin ?
>
> Notice also that when i search uniqueMember inside my static group
> with quite same number of uniqueMember) i have less than 0.1 seconds
> of real time.
You didn't mention the search string and filter, but here my results of
5,000 entries
time ldapsearch -Y DIGEST-MD5 -U replicator -wxxxx -l0 -z0 -H
ldap://localhost -b cn=dynamicGroup,o=avci,c=de -s base "*"
[5000 lines]
# search result
search: 3
result: 0 Success
# numResponses: 2
# numEntries: 1
real 0m0.606s
user 0m0.014s
sys 0m0.027s
-Dieter
--
Dieter KlÃnter | Systemberatung
http://dkluenter.de
GPG Key ID:DA147B05
53Â37'09,95"N
10Â08'02,42"E