http://www.ibm.com/support/docview.wss?uid=isg1OA26789

OA26789: PROCESSOR NOT UNPARKED WHEN PARTITION RUNNING 100% EVEN THOUGH THERE 
IS AVAILABLE CAPACITY ON THE CEC

We have been running the APAR fix since the beginning of March and just this 
morning promoted it to the rest of our LPARs on a larger z10. You can review 
the documentation in the APAR now that it is closed using the link above.

The original HiperDispatch implementation had no consideration for MVS Busy at 
all.  The revised processing which considers both MVS Busy and CEC Utilization 
suits us better allowing us to better utilize available CEC capacity.

I continue to see HiperDispatch as a "very good thing" that has definitely 
provided relief on N-WAY overhead while moving us back to letting z/OS and the 
hardware manage itself.  Kudo's to the wizards in Poughkeepsie.

Now if only all the systems management and reporting tools would catch up:-(   
That is still a bit of a patchwork with support here (RMF data portal) but not 
there (RMF III 3270 and some OEMs).   # of processors on-line is now useless if 
not displayed in with counts of high/med/low processors when running with 
HiperDispatch. 

This is an update to the HiperDispatch segment in Bit Bucket x'25' from SHARE 
in Austin.

http://ew.share.org/client_files/callpapers/attach/SHARE_in_Austin/S2817SK213820.pdf
 

http://ew.share.org/proceedingmod/abstract.cfm?abstract_id=18797&conference_id=20
  

        Best Regards, 

                Sam Knutson, GEICO 
                System z Performance and Availability Management 
                mailto:[email protected] 
                (office)  301.986.3574 

"Think big, act bold, start simple, grow fast..." 


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