Author: Eugene Nalimov
Date: 09:46:02 06/21/02
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On June 21, 2002 at 02:02:58, Dann Corbit wrote: >On June 21, 2002 at 01:39:11, Eugene Nalimov wrote: >[snip] >>And each hash table probe (main memory access) costs several hundred CPU cycles >>on both 32-bit and 64-bit system. > >This is an interesting statement. What if the CPU has 4 megs of on-die cache >and the hash table is 2 megs? >Will it make a difference if the ram is 500 MHz DDR? Rambus? >Does the CPU always wait that long period? > >Been a long time since I delved into timings, though I do know a memory fetch >and a missed branch prediction are heavy blows.
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