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Subject: Re: Virtual Memory

Author: Robert Hyatt

Date: 06:51:11 01/19/00

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On January 18, 2000 at 23:53:45, Dann Corbit wrote:

>On January 18, 2000 at 23:36:20, Tom Kerrigan wrote:
>
>>On January 18, 2000 at 23:17:01, Dann Corbit wrote:
>>
>>>Conversely, we might allocate a *single* hash entry.  Either method ought to
>>>dumb the program down just a touch.
>>>;-)
>>
>>Having a single hash entry will not make the program much worse.
>I am surprised to hear that.  I have seen curves drawn which show a massive rise
>in ELO for the first few megabytes, which then tapers off to what appears to be
>a logarithmic increase.
>
>And if a program assumes a hash table will be helpful, and always does a lookup,
>but never finds an answer, I would think that it would be slowed down quite a
>bit (wild guess: maybe 2x).
>
>>Storing your hash table on a hard disk will.


This came up on usenet news about 2 years ago.  I ran a huge test and posted
the results.  Which were basically that a tiny hash table hurts some, a big
one helps some.  The speed difference was about 2x from tiny to huge.  That
is significant, but only 50-70 rating points...  max...



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