Author: Mark Young
Date: 14:06:06 07/10/98
Go up one level in this thread
On July 10, 1998 at 05:46:37, Kim Hvarre wrote: >On July 10, 1998 at 00:35:52, Robert Hyatt wrote: > >snipsnip > >>Somehow our benchmarks are different. First, I don't see how the Xeon is better >>at context-switching than a normal PII.. that is independent of cache >>completely. however, I have benched my P6/200 vs PII/300's and get 1.41 every >>time I try, using crafty. The first benchmark data I got on a Xeon (source I >>can't reveal) was exactly 2.25X faster than what I am getting on my P6/200. >>This makes sense as crafty has no MMX code whatsoever, so that both processors >>are using the same core technology and relative cache speeds. But note that I >>am a real 32-bit application here with no known-to-be-bad stuff tucked away to >>hurt performance. >> >>For comparison, the AMD K6 seems a perfect match for the P6/200 when the clocks >>are matched... But the Xeon is clocked faster.. > >Qouting from Ed's benchmarkpage: > >Pentium PRO 200 1:02 7:38 1:57 0:19 4:56 0:26 >Cyrix 200 1:22 10:12 2:20 0:17 3:45 0:22 >AMD K6 200 0:47 5:50 1:30 0:15 3:45 0:20 > I would not trust the times given on Ed's web page. I have access to many of the machines on Eds web page. I have benched many of them with rebel and some don't even come close to what Ed has posted on his site. This makes me think some have posted exaggerated times or did not run the test right. If you take this into account and just look at what chip is better at running rebel it is pretty much correct. But don't expect to get some of the times he has posted if you buy that computer with that chip in it. >one must (?) conclude, that the Rebelcode has "known-to-be-bad stuffed tucked >away" or? >As You know these figures are average from several users. Perhaps the diff. >comes from the L1 cache - I don't remember where PP differ from K6 in that >respect. > >kim
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