Re: Issue with index in OpenLDAP?

[Quanah Gibson-Mount <quanah@zimbra.com>]

Hi Mathieu,

It sounds like you didn't delete the cardnumber.bdb file before reindexing? 
That is what I'd have done.

Also, you previously had some questions about OpenLDAP tuning.  You may 
wish to read over 
<http://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning>.  Some of the 
bits in there have Zimbra specific names, but they all apply directly to 
OpenLDAP and BDB in general.

--Quanah

--On Wednesday, January 04, 2012 2:46 PM +0100 "External Mathieu DEDECKER 
(CAMPUS)" <external.z02mdebe@oxylane.com> wrote:

> I will read the man page in order to have more informations about the
> command.
>
> I tried to reindex all the index of the database with the slapindex
> command, but I allways the same behaviour:
>
> Request1: cardnumber=2098001010034Â (less than 1sec)
> Request2: cardnumber=2090389917486Â (nearly 20 sec).
>
> Other .bdb files size have been updated, but my "cardnumber.bdb" has
> still the same size.
>
> Regards,
>
> Mathieu
>
>
> 2012/1/4 Quanah Gibson-Mount <quanah@zimbra.com>
>
> Hi Mathieu,
>
> If you read the slapindex man page, it is possibly to just recreate a
> specific index file (for situations like this), rather than generating
> all of them.
>
> --Quanah
>
>
> --On Wednesday, January 04, 2012 10:39 AM +0100 "External Mathieu
> DEDECKER (CAMPUS)" <external.z02mdebe@oxylane.com> wrote:
>
>
>
> Hello Quanah,
>
> First I would like to thank you for your answer.
>
> Indeed, I also think that the "cardnumber" index is somehow corrupted.
> His size is to small in comparison to other indexes
>
> We suppressed all existing index and Used slapindex to re-create them all.
>
> It's undergoing.
>
> I will keep you informed about the solution.
>
> Best Regards,
>
> Mathieu
>
>
> 2012/1/3 Quanah Gibson-Mount <quanah@zimbra.com>
>
>
>
>
>
> --On Friday, December 23, 2011 11:27 AM +0100 "External Mathieu DEDECKER
> (CAMPUS)" <external.z02mdebe@oxylane.com> wrote:
>
>
> Hi @All,
>
> We meet a performance problem with our OpenLDAP.
>
> We think that we face a problem with the index of the database, and we
> think that the problem can be resolve by tunning the config (but not
> sure).
>
> We would like to be sure that our configuration is correct, in order to
> confirm if we are on a wrong track or not.
>
> [Description]
>
> We have an attribute (cardNumber) which is indexed.
>
> When we request the indexed attribute (cardNumber) with an LDAP Client
> (Ldapbrowser), we have either fast or very long response time.
>
> For the long response time, the CPU of the server hits 100%.
>
> For example:
>
> Request1: cardnumber=2098001010034Â (less than 1sec)
> Request2: cardnumber=2090389917486Â (nearly 20 sec).
>
> By checking the hit ratio of the attribute, we can see that cache is
> correctly used (97%).
>
>
> It sounds like you added an index to cardnumber after there was already
> data for cardnumber in your database, and didn't run slapindex for that
> attribute. ÂAlternatively, your cardnumber.bdb file is corrupted.
>
> --Quanah
>
>
> --
>
> Quanah Gibson-Mount
> Sr. Member of Technical Staff
> Zimbra, Inc
> A Division of VMware, Inc.
> --------------------
> Zimbra :: Âthe leader in open source messaging and collaboration
>
>
>
>
>
>
>
>
>
> --
>
> Quanah Gibson-Mount
> Sr. Member of Technical Staff
> Zimbra, Inc
> A Division of VMware, Inc.
> --------------------
> Zimbra :: Âthe leader in open source messaging and collaboration



--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
--------------------
Zimbra ::  the leader in open source messaging and collaboration