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Subject: Re: 64 bits

Author: Dann Corbit

Date: 23:02:58 06/20/02

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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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