XADM: Slow Intra-Site Replication on Multi-Processor Server

ID: Q235392

The information in this article applies to:

Microsoft Exchange Server, version 5.5

SYMPTOMS

In a multi-server site, intra-site replication may be slow on a multi-processor server. This may occur when a multi-processor server needs to replicate many changes out to other servers in the site, for example, after many mailboxes have been modified or added. A multi-processor server may be slower compared to a single-processor server performing the same task. Replication between different sites is not affected.

The behavior described can be observed when you monitor the following counter in the Windows NT Server Performance Monitor:

Object: MSExchangeDS
Counter: Objects Replicated Out/sec

The value of this counter may be higher on a single-processor server compared to a multi-processor server. At the same time, the processor time used by the Microsoft Exchange Server directory service is high.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: Information Store

File name	Version
Gapi32.dll	5.5.2600.0
Mdbmsg.dll	5.5.2600.0
Netif.dll	5.5.2600.0
Store.exe	5.5.2600.0

Component: Directory

File name	Version
Dsamain.exe	5.5.2630.0

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

Additional query words:

Keywords : exc55 EXC55SP3Fix
Version : winnt:5.5
Platform : winnt
Issue type : kbbug