Message Pool Block Size
Specifies the size of the pool to be pre-allocated by the server to store messages.
To lessen the overhead costs associated with malloc and free, the server pre-allocates pools of storage for messages. This parameter determines the behavior of these pools. Performance varies depending on operating system platform and usage patterns.
The size specified determines the approximate number of internal message structs that a block or pool can accommodate (not the number of bytes).
The Message Pool Block Size property instructs the server to allocate an expandable pool. Each time the server exhausts the pool, the server increases the pool by this size, as long as additional storage is available. The value may be in the range 32 to 65536.
When this parameter is not present, the default size is 128.