This article contains information on how to change the number of scanning threads opened by Symantec Mail Security for Domino (SMSDOM).
The following information is also available information from SMSDOM's Implementation Guide.
Modifying the number of processing threads
Mail Security automatically configures the optimum number of processing threads. The minimum number of threads is two per processor.
The maximum number of threads is four per processor. The default configuration ensures the best performance for your Lotus Domino server.
You should not need to modify the number of processing threads.
Warning: If you are uncertain about how a change to the number of processing threads might affect your Domino server, maintain the default settings.
Modifying the number of processing threads could result in an adverse affect on server performance. Contact Technical Support for assistance.
To modify the number of processing threads
Example of threads configuration:
System with four Quad Core CPUs and maximum number of threads per processor should be configured - 4 threads per CPU. SMSDOM would use 128 threads in total and possibly more than 1.2 GB of RAM only to handle the 'idle' threads. This is calculated as follows:
4 x 4 physical CPUs x 4 cores in CPU >>> SAVMailThreads=64
4 x 4 physical CPUs x 4 cores in CPU >>> SAVWriteThreads=64
total number of threads = SAVMailThreads + SAVWriteThreads
If the CPU and Memory footprints of SMSDOM are impacting negatively the server's performance, the following options could be considered to resolve the situation: