Barbara,
not to escape your question about CFSIZER, but if you are migrating
from one CF to the other, meaning there will be a timeframe when both of
them are online, then moving the structures through rebuild (or better
REALLOCATE) will manage this for you.
During rebuild structures are allocated "by count" which means that the
CFLEVEL17 structure will be allocated large enough to contain the same
number of objects currently contained by the CLEVEL15 one.
Checking the actual CFLEVEL17 size and updating the CFRM policy
accordingly will complete the job.
Also, when moving to CFLEVEL17 don't forget that the size of the CF
Control Code itself increases significantly. From some 100 MB to some
500 MB if I remember correctly. The CFCC LPAR memory definition should
be updated to accomodate this.
Hope this helps,
mario
On 05-Jul-11 11:21 AM, Barbara Nitz wrote:
We're in the process of installing a z196 which will come with cflevel17.
We're currently running CFLEVEL15, and I have heard several horror stories
about problems with structure sizes on CFLEVEL17.
So I went to the CFsizer to get the latest and greatest in sizes. Or so I
thought.
The sizes given to me are all SMALLER than what we have currently defined
(signalling structures and ISGLOCK).
RRS, where we had failures last times because the structures were too small,
consistently gives me
ERROR MESSAGE: MQCLNT RECEIVERESPONSE: AN MQ EXCEPTION OCCURED EXECUTING
CFSIZERRCVQUEUE.GET( MQMSG, DEFAULTGMO) COM.IBM.MQ.MQEXCEPTION: MQJE001:
COMPLETION CODE '2', REASON '2033'.MQJE001: COMPLETION CODE '2', REASON '2033'.
Very informative. (The MQGET reason code means 'Message not available'.)
The health checker structure size comes back from a CFLEVEL13 CF ?!?
System automation isn't even available in the CFsizer. Neither is Websphere
for the WAS error log.
In essence, I cannot rely on what the sizer tells me. What are the
experiences of others who migrated from CFLEVEL15 to CFLEVEL17? Were the
structures getting bigger? Is the sizer giving out values for RRS structures
to anyone or is everybody receiving the above error? Is anyone able to get
HC sizes for CFLEVEL17?
I did notice that one of the error messages gets me a different web page on
the left (where I choose structures). My (saved) link is
http://www-947.ibm.com/systems/support/z/cfsizer/.
Regards, Barbara
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