Microsoft Knowledge Base Article
This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved.
Terms
of Use |
Trademarks
Article ID: 906045 - Last Review: February 28, 2007 - Revision: 1.4
CPU utilization increases on the Exchange server when you are running Antigen
Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986Â
(http://kbalertz.com/Feedback.aspx?kbNumber=256986/
)
Description of the Microsoft Windows registry
When you are running Antigen for Microsoft Exchange, you may notice that CPU utilization increases on the Microsoft Exchange server at certain times.
This behavior occurs if Antigen is scanning a message that has a large compressed file as an attachment. Depending on the version of Antigen that you are running, it may take Antigen two minutes to eleven minutes to scan a large compressed file.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
When you install Antigen, additional processes run on server. These processes use server resources. To eliminate bottlenecks, you can configure Antigen to thread up to ten scanning processes for each scan job.
To configure Antigen to thread multiple scanning processes for each scan job, follow these steps:
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE/Software/Sybarisoftware/AntigenforExchange
- Double-click the InternetProcessCount registry entry, and then type the thread count that you want to use in the Value box.
Note You can type a number between 1 any 10. However, we do not recommend that you use a thread count that is greater than 3. - Click OK.
- Restart the AntigenService service.
- Verify that the specified number of AntigenInternet.exe processes appear in Task Manager.
For more information about the multiple scanning processes feature, click the following article number to view the article in the Microsoft Knowledge Base:
906010Â
(http://kbalertz.com/Feedback.aspx?kbNumber=906010/
)
How to enable the multiple scanning processes feature in Antigen 7.5 and in Antigen 8.0
APPLIES TO
- Microsoft Antigen for Exchange
- Sybari Antigen 8.0 for Microsoft Exchange
- Sybari Antigen 7.5 for Microsoft Exchange
Community Feedback System
Very often, it takes hours to solve a problem. Very often, you've looked high
and low, and have tried a lot of solutions. When you finally found it, chances
are, it was because someone else helped you. Here's your chance to give back.
Use our community feedback tool to let others know what worked for you and what
didn't.
Please also understand that the community feedback system is not warranted to be
correct, it's simply a system that we've built to let people try and help each
other. If something in a feedback response doesn't make sense to you, or you're
not comfortable making changes that the feedback talks about (like registry
edits), please consult a professional.
Thank you for using kbAlertz.com Feedback System.
-- Scott Cate