Performance
These statements and parameters can affect the performance of IBM Tivoli Workload Scheduler for z/OS.
| Statement | Keywords | Description |
|---|---|---|
| AUDIT | Specifies how much audit information is produced | |
| ALERTS | LATEOPER | Use only when deadlines are accurate |
| AUTHDEF | SUBRESOURCES | Specifies subresources that you want to check |
| EWTROPTS | STEPEVENTS | Specifies when IBM Tivoli Workload Scheduler for z/OS creates events for ending job-steps |
| PRINTEVENTS | Specifies if IBM Tivoli Workload Scheduler for z/OS creates events for print tasks (type 4) | |
| HOLDJOB | Specifies if IBM Tivoli Workload Scheduler for z/OS holds and releases jobs on the JES queue | |
| EWWAIT | Specifies the time between reads of a submit/release data set | |
| JTOPTS | BACKUP | Specifies if a CP backup is performed automatically and how many records are written to the JT log between backups |
| EVELIM | Specifies how often statistics messages related to the STATMSG keyword are issued | |
| MAXJSFILE | Specifies if a JS backup is performed automatically and how large the JCL repository file grows before IBM Tivoli Workload Scheduler for z/OS performs a backup | |
| QUEUELEN | Specifies the number of operations IBM Tivoli Workload Scheduler for z/OS starts when the workstation analyzer subtask gets the CP lock | |
| STATIM | Specifies when statistics messages are issued | |
| STATMSG | Determines if IBM Tivoli Workload Scheduler for z/OS issues performance statistics for the current plan, event manager, general service, and WSA task | |
| TRACK | Determines which jobs IBM Tivoli Workload Scheduler for z/OS tracks | |
| OPCOPTS | RCLEANUP | Specifies if the restart and cleanup function is active. Performance is affected when the user chooses to archive the user sysouts for the majority of the operations. |
| VARSUB | Determines which jobs are scanned for JCL variables and directives | |
| TOPOLOGY | LOGLINES | Specifies the maximum number of lines that the Job Log Retriever returns for a single Job Log. |
The amount of data written to the job-tracking log affects how often IBM Tivoli Workload Scheduler for z/OS performs a current plan backup. Keep this in mind when specifying a value for the BACKUP keyword of JTOPTS.