Excessive CPU time used
If your job executing a map or systems of maps seems to be using an excessive amount of CPU (Central Processing Unit) time, there are a number of items you can immediately examine and correct to improve and reduce the total CPU time.
The following table lists some recommended actions you can take to make better use of valuable central processing resources required for a particular map execution, along with the reference to additional documentation:
- Recommended Action
- Documentation Reference For Batch Execution Environment
- Calculate new WorkSpace PageSize size:count settings based upon your map(s) work.
- Execution Command Settings
- Examine the usage of the -WH (Work Files in Memory - Hiperspace) option.
- Execution Command Settings
- Proceed with any possible map tuning, if applicable.
- Map Performance Tuning Tips
- Reduce EXCP count. Reducing the EXCP count can lower CPU time spent managing I/O.
- Excessive EXCPS (I/Os)