Advanced Scheduling Techniques › Running Requests With Specific Resource Limits (SIO) › Example

Example

You have written a new program, REPORTER. You need to test the program and attend a meeting at 3:30 p.m. You can run the program while you are at your meeting and prevent the new program from going into an infinite loop while you are gone by limiting the amount of CPU time the request can use. The MONITOR user exit will detect excessive CPU time usage. Enter the following command:

vmsched schedule progtest reporter (at 15:30:00 cpu 60

This command specifies a threshold of 60 CPU seconds (virtual and overhead) your request can use.

You can also set the following thresholds for your request:

• sio number sets the threshold for the number of disk and tape I/Os your request can perform; if this threshold is exceeded, CA VM:Schedule calls the MONITOR user exit
• uio number sets the threshold for the number of unit record (reader, printer, punch) I/Os your request can perform; if this threshold is exceeded, CA VM:Schedule calls the MONITOR user exit