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Subject: Hashsizes for LGG 2.0

Author: Francis Monkman

Date: 14:39:12 05/12/99


I asked Michael Borgstaedt...

>  any reason for the numbers? [as in the file goliath.ini]
> ** HASHSIZE:
>    Best settings: 1, 2, 5, 7, 15, 28, 52, 105 MB
>    Example: 8-14 is better than 7, but 15 is MUCH better than 7

...and received the following info:

Yes, there are three hashtables. One (the most important of them) uses a
fixed size of about 0,5 / 1,5 / 4 / 6 / 12 / 25 / 46 / 99 MB. To reach one of
these values (the next higher value) is much better than only filling the gap
to the next higher value. E.g.: If you choose 24 MB for hashtables, the
important
hashtable gets only 12 MB. Both other tables then share the other 12 MB,
but normally need max. 5 MB. By choosing 28 MB, the important table gets
25 MB and this gives much more performance than the solution with 24 MB.

Hope this is of use.



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