Re: Job numbers in threads

Hi, Simon:

For those who are new to the platform, or who come from "way back" when it was called AS/400, it might help to explain it this way:

At the MI SLIC (kernel) level, there are MI objects called a PROCESS and and a TASK. The OS/400 or i5/OS (or "i") operating system creates each "job" based on an MI process, and originally, on the System/38 CPF and early AS/400, each process had only one MI task associated with it (e.g. only one "thread" in more modern parlance.) As of V4R4, or thereabouts, IBM introduced what they call "kernel threads" and allow for the possibility that each MI process can consist of one or more MI tasks, the so-called "initial thread", and any additional threads started by a multi-threaded application. Each MI task requires (or occupies) an activity level, while it is active, within the subsystem where the job (process) is running.

HTH,

Mark S. Waterbury

> On 5/10/2010 10:00 PM, Simon Coulter wrote:

On 11/05/2010, at 10:57 AM, DrFranken wrote:

You do need to allow for activity levels for the threads however. For
example we have one job that runs all in it's own subsystem and is the
only job in the memory pool. The job runs well over 400 threads so
there
must be a high enough activity level for that subsystem to allow
many of
the threads to run at once. In our case well over 100. Before threads
an activity level of 1 would have been good for that memory pool.
View
the number of threads for jobs in WRKACTJOB and press F11 until the
thread count is displayed.

Isn't that an implication of "thread" being short for multiple thread
of execution therefore to have multiple threads active at one time
would require an available activity level? Seems obvious to me but
perhaps worth pointing out for batch jobs.

Regards,
Simon Coulter.
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