On 1/07/2013 2:38 PM, Wayne Bickerdike wrote:
David,
My bad, you must have a huge file here, reading 5000 at a time. Hmm, slow as...
No worries Wayne. You always were a tad trigger happy m8 ;) FWIW, we
have a shiny new z114 with 3 engines (1 zIIP). Storage
is a FICON attached IBM SAN. A more than capable hardware stack.
I wouldn't call 300 cylinders huge, but big enough to make a dent. I
profiled the REXX step and it's spending a huge % of time moving data
with MVCL instructions!
http://users.tpg.com.au/crayford/rexx-lua-c-io-benchmark.htm
As for the REXX compiler. If I was a customer paying for that I would
want my money back!
On Mon, Jul 1, 2013 at 2:51 PM, David Crayford <[email protected]> wrote:
On 1/07/2013 1:25 AM, Thomas Conley wrote:
On 6/30/2013 12:17 PM, Shmuel Metz , Seymour J. wrote:
In
<of28a24a26.61fdf4d9-on80257b99.0039d7d3-80257b99.003a9...@uk.ibm.com>,
on 06/29/2013
at 11:39 AM, Martin Packer <[email protected]> said:
In the Munich System z Technical University conference 2 weeks ago
Marna Walle mentioned that in z/OS 2.1 EXECIO is previewed to
perform I/O to VBS (as in "Spanned" :-) ) data sets.
Have they added the language enhancements in OOREXX, or at least those
in the ANSI standard?
Shmuel,
Unfortunately, any changes to the Rexx language standard that would also
require changes to the compiler preclude themselves. The compiler is in the
Dead Pool at IBM, functionally stabilized with no budget to enhance it.
I've tried and failed numerous times to get IBM to bring Rexx up to ANSI
standards. The enhancements you see to Rexx are all done through external
functions, like EXECIO. Those enhancements require no compiler updates, so
for now, that is all you will see as far as Rexx enhancements go.
Then the REXX compiler is more trouble than it's worth. I ran some simple
EXECIO read I/O benchmarks and compiled REXX was the slowest of the lot
http://users.tpg.com.au/crayford/rexx-lua-c-io-benchmark.htm.
Regards,
Tom Conley
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