Author: Matt Taylor
Date: 21:51:46 03/07/03
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On March 05, 2003 at 15:28:26, Vincent Diepeveen wrote: >On March 05, 2003 at 13:30:05, Anthony Cozzie wrote: > >the basic problem of SMT/HT is that the P4 is not the ideal cpu to use SMT/HT. >the k7 is a much better cpu for SMT/HT usage. therefore the speed wins for >SMT/HT are not so convincing. And why is that? Because the K7 is efficient? Somehow I thought the only reason the P4 gained much was because it was inefficient... Also, seems like the K7 has a faster bus at present, which is the other place where HT is useful. >Another problem of SMT/HT in general is that the OSes fire threads and processes >at a speed which is just having a too big latency. For vaste majority of >databases it is not true to say that SMT/HT helps there, because the weakest >chain there is the speed/latency of the harddisks, not the IPC of a processor. I don't know many high-end databases that run off of hard disks, do you? -Matt
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