On Sat, 7 Jan 2017 23:19:13 +0200, Binyamin Dissen
wrote:
>On Sat, 7 Jan 2017 16:57:05 + "Blaicher, Christopher Y."
> wrote:
>
>:>Generally speaking, a page sized request will return a zeroed page, but
>there is no guarantee for that
>From the Assembler Services Reference manual:
Note:
1.When you obtain storage, the system clears the requested storage to zeros if
you obtain either:
8192 bytes or more from a pageable, private storage subpool.
4096 bytes or more from a pageable, private storage subpool, with
BNDRY=PAGE
I don't know when it wouldn't. I personally wrote the code to zero out a
page on its first reference after GETMAIN back in the '70s. But as has
been discussed here, if it is part of a page that is FREEMAINed and then
the same address is returned by a subsequent GETMAIN, data may likely be
On Sat, 7 Jan 2017 16:57:05 + "Blaicher, Christopher Y."
wrote:
:>Generally speaking, a page sized request will return a zeroed page, but there
is no guarantee for that unless you specify that on the GETMAIN.
What is the case where it would not return a zeroed
The content of the getmained area is much depend on language command and
options (COBOL initialize foe example).
ITschak
נשלח מה-iPad שלי
ב-7 בינו׳ 2017, בשעה 21:57, Clark Morris כתב/ה:
> [Default] On 7 Jan 2017 08:56:33 -0800, in bit.listserv.ibm-main
>
[Default] On 7 Jan 2017 08:56:33 -0800, in bit.listserv.ibm-main
cblaic...@syncsort.com (Blaicher, Christopher Y.) wrote:
>Your example of 4K is important because it is a page in size. A page can only
>have one key and can only have one sub-pool associated with it at a time.
>
>Common memory
Your example of 4K is important because it is a page in size. A page can only
have one key and can only have one sub-pool associated with it at a time.
Common memory excepted, once the page is freed, it can be re-assigned into any
key or sub-pool. Common memory has a whole different set of
On 01/07/2017 09:07 AM, esst...@juno.com wrote:
> .
> I recently read a share presentation on system integrity by Karl Schmitz.
> Being a CICS Sysprog I dont get much opportunity to do some of the topics
> Karl discussed.
> .
> .
> I do have a question or should I say clarification about STORAGE.
Paul
Getmain (in private area as you described) in not a real memory frame
(which is the term for real memory 4k). It get the key based on the subpool
you specify in the macro. So, in short, it is only visible through your
asid page tables.
Once your asid ends, so does the page tables. This is why
.
I recently read a share presentation on system integrity by Karl Schmitz.
Being a CICS Sysprog I dont get much opportunity to do some of the topics Karl
discussed.
.
.
I do have a question or should I say clarification about STORAGE.
I also looked at the z/OS Authorized Assembler Services
Steve Horein wrote:
>Something like this?
>http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/f1a1b3b0/2.5.9
Good link, but that is for z/OS v1.13.
>I imagine the same (or similar) topic is documented for z/OS Comm Server 2.x,
>...
Try this for z/OS v2.1, first URL is for UNIX
Something like this?
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/f1a1b3b0/2.5.9
I imagine the same (or similar) topic is documented for z/OS Comm Server
2.x, but I tend to avoid KnowledgeCenter searches in favor of *useful*
search interfaces.
On Fri, Jan 6, 2017 at 12:16 PM, Phil
blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } Anyone has a Multiprise and is planning to sell it?I need one to
backup parts.
Thank youDan
Sent from Yahoo Mail for iPhone
Saw this in the LinkedIn "Performance & Optimization News..." group:
http://linkd.in/2i03y7v - "Spark Analytics on the Mainframe
Interesting article by Stephen D. Bartlett at the Clipper Group about
running Spark on the mainframe: IBM z Systems Get a Big Charge Out of Spark
Analytics."
Roger Lowe
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