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System News > Volume 122 > Issue 2 > Sun Servers >

April 7, 2008
Article #19581
Volume 122, Issue 2
Servers
 

Look Twice, Maybe Three Times, at IBM's Claims for its z10 Mainframe
Sun Blogger Jeff Savit Thinks Some 'Benchmarketing" Might Be Going On

There's a good more than meets the eye in the claims IBM is making for its new z10 mainframe, for which Big Blue claims a 30 to 1 ability to consolidate software licenses, among other things. Sun blogger Jeff Savit asserts further that this claim is based on 760 X2100 cores to 26 z10. The 760 to 26 is based on 3845 RPEs at 10 percent = 384.5 RPEs, which is approximately equivalent to the number of z10 RPEs at 90 percent when you use 20 RPEs equal to 1 MIP where MIPS are based on the LSPR curve for the z10. Got that? Well, read on, in the Sun blog, which points out that these measures were not taken under load, the only true measure of system performance. [...read more...]

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