Benchmarking and systems performance - hosted by Elisabeth Stahl

Elisabeth Stahl

Blog Authors:  ELISABETH STAHL   is Chief Technical Strategist and Executive IT Specialist, IBM Systems and Technology Group, and has been working in systems performance for over 25 years.

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Seems more like IBM is living in the twilight zone! <div>&nbsp;</div> Why is it that IBM continues to talk about performance/core with Power6 servers-Is IBM falling behind in the multi-core race...?<div>&nbsp;</div> While Intel, AMD, and Sun ship 4, 6 and 8-core per CPU systems, IBM continues to ship antiquated dual-core CPUs. Same dual core architecture since 2001 with Power4. Now thats what I call living in the twilight zone!<div>&nbsp;</div> And why mislead customers with comparing per core performance on SAP which has no per core licensing? Why not talk performance per GHz for that matter? Kind of like comparing race cars by performance/cylinder? HUH?<div>&nbsp;</div> With Sun's M9000 highest end SPARC64VII server achieving over 10% more SAP benchmark users (running on Oracle not DB2 by the way) than IBM's Power 595 and achieving over 2x more benchmark users per GHZ, is IBM feeling core deprived? A bit stretched in the dead end GHZ race?<div>&nbsp;</div> Sun's multi-core architecture is really starting to shine as witnessed by the recent Sun T5440 SAP world record, where a 4 x CPU UltraSPARC T2Plus @ 1.4Ghz T5440 server (7,520 SAP benchmark Users)almost beats the performance of a MUCH MORE expensive 8 x CPU Power 570 @ 4.7GHz (8,000 SAP benchmark Users). Thats half the CPUs and a fraction of the GHZ!<div>&nbsp;</div> Time to re-evaluate your GHZ strategy...

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Phil - Thanks for your comments. I love The Twilight Zone too ! Remember the really scary one with the talking doll . . . Anyway, even talking about overall performance here, the IBM result was 43% better than the Sun result. If you want to talk cores, licensing costs are indeed important for many types of software and certainly need to be considered. And if you want to talk GHz, compare your race car to a jet plane. It depends on where you need to go. Oh, remember that great Twilight Zone on the plane . . . Anyway, as we know, in the end it's important to look at the whole picture to decide what is best for your performance.

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