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Dawn May

Dawn May




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

January 11, 2011

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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?

Dawn:
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.

Dawn

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