Performance-Related Information - Netscape DIRECTORY SERVER 6.01 - ADMINISTRATOR Administrator's Manual

The file lists the default object classes with the allowed attributes that must be
added to a user's entry in order for presence information to be available for that
user:
objectclass: nsAIMpresence
attributeTypes: nsAIMid syntax DirectoryString
attributeTypes: nsAIMStatusGraphic syntax Binary
NO-USER-MODIFICATION USAGE directoryOperation
attributeTypes: nsAIMStatusText syntax DirectoryString
NO-USER-MODIFICATION USAGE directoryOperation
objectclass: nsICQpresence
attributeTypes: nsICQid syntax DirectoryString
attributeTypes: nsICQStatusGraphic syntax Binary
NO-USER-MODIFICATION USAGE directoryOperation
attributeTypes: nsICQStatusText syntax DirectoryString
NO-USER-MODIFICATION USAGE directoryOperation
objectclass: nsYIMpresence
attributeTypes: nsYIMid syntax DirectoryString
attributeTypes: nsYIMStatusGraphic syntax Binary
NO-USER-MODIFICATION USAGE directoryOperation
attributeTypes: nsYIMStatusText syntax DirectoryString
NO-USER-MODIFICATION USAGE directoryOperation
You can create your own schema and modify the plug-in configuration parameters
accordingly.

Performance-Related Information

Note the following:
• The Presence plug-in provides the presence information through an HTTP
interface. That is, for every request for IM Status, the plug-in makes an HTTP
request to the IM server. Hence, enabling this feature for a large number of
users may degrade the performance of Directory Server when many
simultaneous requests are issued for the presence status of many users.
• Currently there's no caching support for this feature. Potentially, all the
threads in the Directory Server may be waiting for an HTTP response.
Additional requests, including requests that do not include presence
information, will not complete until one or more of the presence information
requests has completed. To avoid such a situation, you can set resource limits
based on as explained in the next section.
bindDN
Performance-Related Information
Chapter 18 Configuring IM Presence Information 483