Installation guide

DC 900-1325I 57
Chapter
4
SRA Design Tips and
Restrictions
This chapter describes some additional information that is useful to know when design-
ing and running your SRA. Also included are some system limitations to watch out for.
4.1 Managing RAM Memory
The Freeway server utilizes RAM memory in many ways during normal operation.
Buffer pools, queues, system logging, and RAM-disk partitions all make use of the avail-
able RAM memory. The default size of the RAM-disk partition is 128 Megabytes. For
more information on the RAM-disk partition configuration, refer to the Freeway User’s
Guide.
The following tips are designed to help prevent your SRA from using up the available
memory resources.
4.1.1 DLI Configuration
A common problem is for a client application to ignore data that is available for reading,
causing data to accumulate at the ICPs and server, exhausting buffer pools, and leading
to degraded performance or failure. A good design practice is to always maintain a
queue of reads at the DLI and to service the queue of completed reads.
In the SRA DLI configuration file, the MaxSess parameter defines the maximum num-
ber of sessions to support. The default is 128. Consider modifying this number to meet
your requirements, as it increases the amount of RAM required by DLI. Similarly, the
DLI trace buffer size parameter (
TraceSize) should be modified to meet your needs.