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« Detach Spooled Files From a Job | Main | Multi-Threaded Interactive Jobs? »

January 11, 2011


After reading this I thought it would be nice to have a beginners tutorial of how WRKACTJOB compares to Windows Task Manager. In reality they don't compare very well because WRKACTJOB has MANY more capabilities and statistics, and that is EXACTLY what I think could draw people to the platform.

Obviously many existing IBM i people might night find it enlightening, but they could use it as a reference point when "selling" the virtues of IBM i to either new staff or justifying keeping the IBM i vs. switching to Windows.

Interesting article, as always!

Compressing the job tables is the job tables version of what in a file system context would be defragmentation. IBM provides a way to defrag the file system while it is online (STRDSKRGZ); should there not be a way to defrag the job tables while there are online, in the background and with minimal performance impact on work performed by the system?

This job structure article jogged my memory regarding a recent situation which I witnessed with a Series i customer. They have multi-threaded INTERACTIVE jobs running on their system. Can you sometime explain the concept of multi-threaded interactive jobs. I know and understand multi-threaded batch jobs but know nothing about multi-threaded interactive jobs. How are they created? What purpose do they serve? From a performance standpoint, does QPFRADJ adjust activity levels for multi-threads of interactive jobs?

Any additional info would be helpful. Thanks!

Aaron - good suggestion.

Kurt - there has been discussion about being able to compress the job tables while the system is active, but it's not something that we have chosen to invest in; we've always had other changes that we deemed were more important.

Harry - I'll address your comment in a future blog article.


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