Re: FW: I/O Optimization

2013-06-11 Thread Elardus Engelbrecht
Barry Merrill wrote:

NOT PARTICULARLY EFFICIENT, but met the requirments.

Of course. It is also not efficient when you need to recover lost SMF data. One 
broken record or block and the rest of the dataset are lost. [1] 

Groete / Greetings
Elardus Engelbrecht

[1] - I believe there is a program somewhere on the CBTTAPE which you can use 
to repair broken VBS datasets.

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Re: FW: I/O Optimization

2013-06-11 Thread Barry Merrill
Actually, while IBM's IFASMFDP would fail with ABEND 002 on a broken VBS 
segment or block, 
even the first public version of SAS, in October, 1972, when it was still 
distributed in 
source code from the Department of Statistics at North Carolina State 
University, could 
read and recover SMF VBS files with broken segments, thanks to the brilliant 
implementation
by Tony Barr.

Barry

-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Elardus Engelbrecht
Sent: Tuesday, June 11, 2013 5:07 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: FW: I/O Optimization

Barry Merrill wrote:

NOT PARTICULARLY EFFICIENT, but met the requirments.

Of course. It is also not efficient when you need to recover lost SMF data. One 
broken record or block and the rest of the dataset are lost. [1] 

Groete / Greetings
Elardus Engelbrecht

[1] - I believe there is a program somewhere on the CBTTAPE which you can use 
to repair broken VBS datasets.

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Re: FW: I/O Optimization

2013-06-11 Thread Barry Merrill
With your persistence in demanding that your interpretation is the ONLY correct 
grammar, would not An historic have been a better suggestion?

And I disagree, since the THE was qualified by for SMF in OS/360 and not a 
reference to the earlier and different use in FORTRAN.

I actually accomplish sharing information in my posts.

Yours seem to exist only to inflate your ego.

Barry

-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of John Gilmore
Sent: Tuesday, June 11, 2013 7:31 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: FW: I/O Optimization

Barry Merrill wrote:

begin extract
The historic use of VBS was precisely for SMF in OS/360, when the NUC was 86K 
and SMF want to write 32K logical records.
/end extract

This is accurate enough if 'The' is replaced by 'a'; but VBS has a very much 
longer history beginning with unformatted FORTRAN II tape I/O on the IBM 704.

For its history in an IBM System/360 environment see

http://www.idinews.com/history/greenWords.html

John Gilmore, Ashland, MA 01721 - USA

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Re: FW: I/O Optimization

2013-06-11 Thread R.S.

W dniu 2013-06-11 19:20, John Eells pisze:

R.S. wrote:
snip

BTW2: It's really strange why IFASMFDP have no option like SPANINC. Is
it candidate for z/OS version 3.x in 2024?


As Yogi Berra is rumored to have said (there are any number of 
attributed variations), Prediction is hard.  Especially about the 
future.


But in my view, the chances that we will enhance IFASMFDP in this way 
are slim.  We have been focusing instead on enhancing the functions 
related to writing SMF data to log streams.


It wasn't prediction, it was sarcazm. I have no doubt IBM will do 
anything convenient in z/OS realm :-(

Caution: convenient does not belong to RAS.

--
Radoslaw Skorupka
Lodz, Poland






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