Author: vasanthz
Posted: Sat Oct 15, 2016 2:39 am (GMT 5.5)
My two cents..
DB2 controls what and how much of that work runs on zIIP and we have no control over it. However there are ways to make sure the eligible work actually runs on zIIP.
IEAOPTXX member option ZIIPAWMT - This parameter is somewhat like that amount of time the work will wait for zIIP. If zIIP is very busy processing other work and is not available for the specified amount of time, then the zIIP eligible work will run in General Processor.
(provided IIPHONORPRIORITY=YES)
zIIP eligible work running on General processor is generally a thing best monitored and made to run on zIIP, without affecting response times/performance.
There is also a field in DB2 SMF records which says the amount of zIIP eligible work that ran on GP. Based on the amount of zIIP eligible work that ran on GP, ZIIPAWMT can be tuned or additional zIIP engines can be added to make the work run on zIIP.
_________________
Give a man a fish and you feed him for a day. Give a man POISONED fish and you feed him for a lifetime.! [o_o]
(â¯Â°â¡Â°ï¼â¯ï¸µ â»ââ»
Posted: Sat Oct 15, 2016 2:39 am (GMT 5.5)
| Quote: |
| Are there any pointers how we can move DB2 utilities to run on zIIP engine? |
My two cents..
DB2 controls what and how much of that work runs on zIIP and we have no control over it. However there are ways to make sure the eligible work actually runs on zIIP.
IEAOPTXX member option ZIIPAWMT - This parameter is somewhat like that amount of time the work will wait for zIIP. If zIIP is very busy processing other work and is not available for the specified amount of time, then the zIIP eligible work will run in General Processor.
(provided IIPHONORPRIORITY=YES)
zIIP eligible work running on General processor is generally a thing best monitored and made to run on zIIP, without affecting response times/performance.
There is also a field in DB2 SMF records which says the amount of zIIP eligible work that ran on GP. Based on the amount of zIIP eligible work that ran on GP, ZIIPAWMT can be tuned or additional zIIP engines can be added to make the work run on zIIP.
_________________
Give a man a fish and you feed him for a day. Give a man POISONED fish and you feed him for a lifetime.! [o_o]
(â¯Â°â¡Â°ï¼â¯ï¸µ â»ââ»