Chapter 2 Installing Cisco Unified MeetingPlace Web Conferencing Release 5.3
About the Cisco Unified MeetingPlace Web Conferencing Release 5.3 Installation
All new servers being deployed must be either Cisco MCS or, for MeetingPlace customers with a legacy system, Cisco
Cisco Unified MeetingPlace Web Conferencing comes with a distributable version of SQL Server called MSDE 2000. Although MSDE 2000 and SQL Server 2000 are based on the same technology, MSDE 2000 does not scale as well as SQL Server 2000. Because of this
The following sections provide information about how to anticipate and diagnose performance and scalability limitations related to MSDE:
•MSDE Database Size, page
•MSDE Database Scalability, page
MSDE Database Size
MSDE limits the database size to 2 GB. If either the MPWEB or the
•Set a more aggressive value for the Purge meetings held before (Days) parameter. For more information, see the “About the MeetingNotes Purge Parameter” section in Chapter 3 of the Configuration Guide for Cisco Unified MeetingPlace Web Conferencing Release 5.3.
•Upgrade to a full version of SQL Server with a per processor license, as this does not have a database size limitation.
MSDE Database Scalability
MSDE implements a concurrent workload throttle mechanism to limit scalability under heavy load. Currently, this mechanism activates when more than eight SQL queries execute concurrently. However, there is no direct mapping between the number of active
Rather, the exceeding of this limit depends on the following:
•Number of active users
•Features that are used at any given time and how these features interact with the database
•Current size of the database
•Power of the server (CPU, disks, and so on)
Although Microsoft does not give information about the specific algorithm that is used to implement this concurrent workload throttle mechanism, our tests show that the slowdown is based on the number of SQL queries that exceed the limit of eight queries. For example, if 10 concurrent queries execute, the slowdown is minimal. If 20 concurrent queries execute, the slowdown is more noticeable. If 40 or more concurrent queries execute, the slowdown can become so significant that users find Cisco
Unified MeetingPlace Web Conferencing as unresponsive or
Related Topics
•See the “How to Assess Performance Degradation Due to the Database Scalability Limitation of MSDE” section in the Configuration Guide for Cisco Unified MeetingPlace Web Conferencing Release 5.3.
Installation and Upgrade Guide for Cisco Unified MeetingPlace Web Conferencing Release 5.3
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