Terminal Server Tuning
The aXes Terminal Server is just a job like any other IBM i job therefore the normal rules of work management and performance tuning apply. However, because aXes Terminal Server is a transaction server there are some additional considerations.
Tuning Guidelines
An iterative process to tuning is required but the following table may be used as a guideline for tuning the aXes Terminal Server.
In this section “transaction” is used to mean the round-trip from a user pressing Enter in an application panel until the screen is available for use again.
|
Problem |
Possible Solutions |
|---|---|
| Users experience frequent ‘Application Busy’ messages |
Determine the average length, in seconds, of a transaction for your application and set the TSInactiveLimit= directive in the aXes-TS configuration file to that value plus a few seconds. If you change the TSInactiveLimit= directive then you must also set the –idle-timeout switch on the FastCGIServer directive in the configuration file for the associated application server to value slightly greater than TSInactiveLimit. For example, if it generally takes 2 minutes to process a transaction then you should set TSInactiveLimit=125 and –idle-timeout 140.
If you need to set the TSInactiveLimit= directive to a value in excess of 300 seconds then you should seriously consider changing the way your application works. Long running tasks (anything that takes more than 5 minutes to complete) are better handled as batch jobs and should be submitted to batch or sent to a data queue for asynchronous processing. |
| Response seems erratic when many users have active sessions | If the number of sessions exceeds 80 to 100 you may need to increase the number of threads in the Terminal Server job. Increase the RequestThreadCount= and ResponseThreadCount= directives by 1 for each group of 80 to 100 sessions. |