I did a quick check with IBM and ran some jobs to compare, here is what we
used:
I found that for a SUN f6800 with 1.2 GHz processors and a Regatta with
about the same speed processors (1 GHz), for an Oracle workload, I could
run one IFL (one CPU) for every 4xCPU of the AIX or SUN. The memory is
also about half. Nothing else on the zLinux (i.e. no users just servicing
Oracle requests for other servers).
Regards,
[EMAIL PROTECTED]
NCCI
Boca Raton, Florida
561.893.2415
greetings / avec mes meilleures salutations / Cordialmente
mit freundlichen Grüßen / Med vänlig hälsning
"Kevin A. Schmidt
- at Potomac To:
[email protected]
Electric Power cc:
Company" Subject: How do you compare
workloads on the IFL's to other hardware platforms?
<[EMAIL PROTECTED]
com>
Sent by: Linux on
390 Port
<[EMAIL PROTECTED]
IST.EDU>
06/20/2005 05:36
PM
Please respond to
Linux on 390 Port
We are trying to make a case for running purchased solutions on zSeries
Linux. Our problem is that vendors will take the companies throughput
and processing information to tell us how much hardware is necessary for
their product, but cannot tell us how that would translate to IFL's.
Vendors are coming back with a SPEC Int Rate for their solution which can
easily be matched up at www.spec.org to determine the hardware solutions
from various vendors. But IBM does not provide SPEC Int Rates for the
IFL's. Their claim is that the SPEC Int rate is an unfair comparison
because of co-processing work for I/O, memory management, etc... IBM's
answer is to run the process on another hardware platform, capture the CPU
information at 15 minute intervals and they can run that through modeling
packages to see what it would take on the IFL. If the company has the
time to install it on another platform and run it, why would they then
want to move it?
Unfortunately this makes it difficult to calculate costs for zLinux
hardware. How is everyone else doing this?
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