On Fri, May 11, 2012 at 03:20:23PM -0600, Daniel Fussell wrote: > Does anyone have any experience with the new Opterons that can confirm > if they are DOA performance-wise? Or does recompiling with special gcc > flags to optimize the multiply ordering restore AMD's standing for > threaded server performance?
I have experience with the Intel Westmere Xeons and AMD Shanghai Opterons,
but not with Sandy Bridge and Bulldozer. With that said, I wouldn't
necessarily say that AMD is getting their butt handed to them on a silver
platter. From my experience AMD is very much in the game, performance-wise,
and this article from Phoronix confirms:
http://www.phoronix.com/scan.php?page=article&item=ubuntu_1204_virt&num=1
From the article:
Between Intel's Sandy Bridge and AMD's Bulldozer for KVM
virtualization, the relative performance was generally quite close
between these competing latest-generation architectures. If looking
at the harmonic mean of the over three dozen tests that were run, the
Intel Core i7 3960X was running at 93% the speed of bare metal with
KVM while the AMD FX-8150 came in at 90% the speed of the bare metal
Bulldozer. Alternatively, with the geometric mean of all the results,
the i7-3960X was at 85% the speed of bare metal while the AMD FX-8150
was at 88%. VirtualBox on the FX-8150 was at 85% while the
problematic VirtualBox-on-Sandy-E was at 59%. Xen on Sandy-E came in
at 94%.
They had issues with their ASUS motherboard, so AMD Xen benchmarks weren't
taken.
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