Re: Issue with index in OpenLDAP?

[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.  Alternatively, your cardnumber.bdb file is corrupted.

--Quanah


--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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