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Subject: RE: [ActiveDir] Slow LDAP responses
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Posts:497

12/01/2005 10:23 AM  
How odd, that jumped offlist and then back onlist...


-----Original Message-----
From: ActiveDir-owner@xxxxxxxxxxxxxxxxxx
[mailto:ActiveDir-owner@xxxxxxxxxxxxxxxxxx] On Behalf Of Whaley, Greg
Sent: Wednesday, November 30, 2005 9:45 AM
To: ActiveDir@xxxxxxxxxxxxxxxxxx
Subject: FW: [ActiveDir] Slow LDAP responses

Thanks Joe. In further research I have found when LDAP response is slow that
LSASS.exe is taking up most of the process. I have also seen in other post
that there may be a beta patch from MS for lsass.exe high utilization. So
know I am waiting for MS to get back to me.
Greg Whaley
Consulting LAN Engineer
St. John Health
586-753-1594

-----Original Message-----
From: joe [mailto:listmail@xxxxxxxxxxx]
Sent: Tuesday, November 29, 2005 7:43 PM
To: Whaley, Greg
Subject: RE: [ActiveDir] Slow LDAP responses

ADFIND will take any standard LDAP query and execute it, you generally just
specify the base (-b) and a filter (-f) and add -selapsed to get the timing
values. So for instance, you could do

Adfind -b dc=domain,dc=com -f ou=* -dn -selapsed

To get a list of all DNs of Ous in domain.com

joe

-----Original Message-----
From: Whaley, Greg [mailto:Greg.Whaley@xxxxxxxxxx]
Sent: Wednesday, November 23, 2005 8:56 AM
To: joe
Subject: RE: [ActiveDir] Slow LDAP responses

Joe,

I do not really understand the command syntax any way you can give me an
example?

Greg Whaley
Consulting LAN Engineer
St. John Health
586-753-1594

-----Original Message-----
From: joe [mailto:listmail@xxxxxxxxxxx]
Sent: Friday, November 04, 2005 4:30 PM
To: ActiveDir@xxxxxxxxxxxxxxxxxx
Subject: RE: [ActiveDir] Slow LDAP responses

How do you know the responses are slow? What aspect is slow? Is it the name
resolution, the bind, the query itself, what?

Usually the first thing I would do in something like this is look at the
-selapsed output of adfind which breaks up timing by various things done in
the query

Elapsed Times:
LDAP_OPEN 0.016
ROOT_DSE 0
LDAP_OPEN_2 0
PARTIAL_SCHEMA 0.407
LDAP_UNBIND_2 0
LDAP_SEARCH_INIT 0
LDAP_GET_PAGES 0.062
LDAP_UNBIND 0

That can help narrow it down. If the open is really slow then I get out a
network sniff and start watching the name res process, etc and usually find
the problem there.

joe

-----Original Message-----
From: ActiveDir-owner@xxxxxxxxxxxxxxxxxx
[mailto:ActiveDir-owner@xxxxxxxxxxxxxxxxxx] On Behalf Of Whaley, Greg
Sent: Friday, November 04, 2005 2:24 PM
To: ActiveDir@xxxxxxxxxxxxxxxxxx
Subject: RE: [ActiveDir] Slow LDAP responses

I am seeing issues with slow LDAP response on a specific Windows 2000 domain
Controller. I have looked in the logs and the only thing I can see is that
is causeing an issue is in the application log. Here is the event ID 1000:

Windows cannot query for the list of Group Policy objects . A message that
describes the reason for this was previously logged by this policy engine.

I then go down to the error that was previously logged and see this. Event
ID 1000

Windows cannot establish a connection to **Domain**.COM with (0).

Anyone have any clues on what might be going on?

This error started after the DC was rebooted because of issues with slow
LDAP response.

Greg Whaley
Consulting LAN Engineer


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