gtpa3m14 | Application Requester User's Guide |
The communications line throughput needs to be monitored. As a rule of thumb, LU 6.2 running on an SNA CTC link can probably handle the throughput requirements of the TPFAR connected to DB2, but application profiles vary widely. The number of the CTC read buffers defined in keypoint 2 through the use of the SNAKEY macro is one place to check on TPF if the amount of data returned on queries is large. Increasing the number of read buffers may cause better throughput if the bottleneck is on the return side of the CTC link from VTAM. A performance study of each application or group of applications should be done to determine the impact to system resources. You have to consider both sides of the interface. For ALS connections, you can increase the number of read buffers by using the MAXBFRU parameter on the SNAKEY macro.
For detailed information about the SNAKEY considerations, see TPF ACF/SNA Network Generation.