Author: John Scalo
Date: 16:44:06 06/01/98
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On June 01, 1998 at 05:38:31, Moritz Berger wrote: >The fact that Hiarcs/Mac uses only 256 KB hash tables makes it hard to >predict the memory performance (one weak spot of all Power Macs compared >with the latest 100 Mhz 440BX Intel systems) for other programs that use >hundreds of megabytes for hash tables at these machine speeds. > What is the Power Mac weak spot exactly? 83MHz vs 100MHz system bus? And why did Hiarcs/Mac restrict the hash to 256k? It's a trivial thing to do in a Mac program to detect the amount of memory allocated to the program and then divvy it up as needed. IE, make the default "preferred size" of the program = X which corresponds to 256k hash. If the user changes the parition to Y, then increase the hash by Y - X. -j
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