On 5/12/2016 10:17 AM, Mark Zelden wrote:
On Thu, 12 May 2016 07:30:03 -0400, Richards, Robert B.
<robert.richa...@opm.gov> wrote:
I do have a follow-up question.... Is anyone aware of a downside to over
specifying reserved CPs?
LCCA/PCCA storage. But the default CBLOC has been VIRTUAL31 since z/OS 1.12.
Even
if you are still overriding it to below the line it shouldn't be a problem
unless you are reserving
a large number (FSVO large) and have 24-bit issues already in your common / pvt
storage.
Not true. LCCA/PCCA storage is only allocated for a CP when a CP is
logically online.
The maximum number of CPs is dependent on the value of CVTMAXMP that is
set when z/OS IPL's. This value effects the size of many other control
blocks, including, but not limited to, the LCCAVT and the PCCAVT. Which
is why CVTMAXMP can not be increased dynamically. While over specifying
reserved CPs does have an impact on storage usage, it is a *minor*
impact until the CPs are actually brought online to z/OS. So don't
worry about over specifying the value.
Greg
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