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CPU and memory are large factors in Access Path builds, not just I/O.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Steinmetz, Paul
Sent: Monday, September 15, 2014 1:32 PM
To: 'Midrange Systems Technical Discussion'
Subject: Performance of large LF access path builds - SSD vs 10K spinny

We did a 3rd party software upgrade this weekend, which included some large
LF access path builds.
The time on our production LPAR with SSD was the same as the time on R&D
LPAR with 10k spinny.
P7 740 E6C CPU, memory, DASD controller, 5913, resources comparably the
same.

From other benchmark jobs, I expected a 4x increase with the SSD drives
compared to the 10k spinny.
This did not occur, times were the same.

Any thoughts from the group?

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx<mailto:psteinmetz@xxxxxxxxxx>
http://www.pencor.com/

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