Blackberry ENTERPRISE SERVER FOR IBM LOTUS DOMINO - IMPACT OF SUPPORTING HTML AND RICH-CONTENT EMAIL MESSAGES - TECHNICAL NOTE Руководство - Страница 3

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BlackBerry Enterprise Server for IBM Lotus Domino
Technical Note: Impact of Supporting HTML and Rich-content Email Messages
% Processor Time
Virtual bytes (MB)
Results of IBM Lotus Notes Rich Text load tests
Item
Message rate
(messages/min)
% Processor Time
Virtual bytes (MB)
When MIME/HTML email messages were sent and received, the BlackBerry Enterprise Server
increased its use of virtual memory by 164 MB, and it used 92% more CPU resources.
When IBM Lotus Notes Rich Text email messages were sent and received, the BlackBerry Enterprise
Server increased its use of virtual memory by 54 MB, and it used 7% more CPU resources.
Conclusions
Monitor the virtual memory that the BlackBerry Enterprise Server uses. Use the Windows
Performance Monitor or other tools to view the counter <server>\Process(NBES)\Virtual Bytes. If your
organization's environment uses a 32-bit operating system, and the virtual memory use of the NBES
process of the BlackBerry Enterprise Server approaches the 2 GB limit, you should take measures to
reduce the use of this resource.
You can manage the use of virtual memory in your organization's environment by upgrading the
operating system that the BlackBerry Enterprise Server runs on to a 64-bit operating system. The
BlackBerry Enterprise Server can use up to 4 GB of virtual memory address space instead of the 2
GB that a 32-bit operating system provides. IBM Lotus Domino Version 7.0.2 and later support 64-bit
operating systems.
You can reduce the amount of virtual memory that the BlackBerry Enterprise Server uses by
upgrading the IBM Lotus Domino server that the BlackBerry Enterprise Server runs on to version
8.0.1 or later. IBM supports the use of a mixed-mode environment with IBM Lotus Domino version 8
servers and IBM Lotus Domino version 7 servers running in the same environment.
If the BlackBerry Enterprise Server uses an unacceptable amount of CPU resources and virtual
memory, you can use the BlackBerry Manager to turn off support for inline images in MIME/HTML
email messages and IBM Lotus Notes Rich Text email messages to reduce the amount of resource
consumption. If the BlackBerry Enterprise Server continues to use an unacceptable amount of
resources, you can use the BlackBerry Manager to turn off support for MIME/HTML and IBM Lotus
Notes Rich Text email messages. If you turn off support for this feature, BlackBerry Enterprise Server
version 4.1 SP6 uses a similar amount of CPU resources and virtual memory as BlackBerry
Enterprise Server version 4.1 SP5.
While you evaluate the use of virtual memory in your organization's environment, note that antivirus
software and nightly state database maintenance activities, while underway, can contribute to higher
virtual memory usage. For more information about memory usage in an IBM Lotus Domino
environment, visit
www.ibm.com/support
Last saved: 17/07/2008
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