[CalendarServer-dev] [CalendarServer] #260: OpenLDAP directory service

CalendarServer trac at macosforge.org
Wed Oct 14 10:08:34 PDT 2009

#260: OpenLDAP directory service
 Reporter:  jusiskin@…                 |       Owner:  sagen@…           
     Type:  Feature                    |      Status:  new               
 Priority:  2: Expected                |   Milestone:  CalendarServer-2.x
Component:  Calendar Server            |    Severity:  Other             
 Keywords:                             |  

Comment(by rahul@…):

 I would like to know whether anyone is using this patch in a production
 environment. I am using this patch with calendarserver in a company with
 about 250 users simultaneously connected with Lightning. The error log
 shows that authentication has failed for about 4-5 users and it keeps on
 retrying continuously. The calendar server process initially starts
 normally but suddenly its cpu usage goes to above 90%.

 The server is a Intel Core 2 1.86 Ghz CPU with more than 3 GB RAM.

 I am trying to figure out the possible reason for the high CPU usage.

 1. The server configuration is not sufficient for 250 simultaneous users.
 2. The ldap patch is coded in a way which is leading to the high CPU
 3. The repeated authentication attempts is leading to the high CPU usage.

 Any help in this regard would be highly appreciated.

Ticket URL: <http://trac.calendarserver.org/ticket/260#comment:34>
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