Author: Ricardo Gibert
Date: 19:50:34 11/15/01
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On November 15, 2001 at 07:24:34, Gian-Carlo Pascutto wrote: >On November 14, 2001 at 12:33:09, Ricardo Gibert wrote: > >>How many of the test positions were endings? > >Should be about 20-30% > >>What were the sizes of the 32-bit key hash tables and 64-bit key hash tables? > >Both three seperate tables of 1 000 000 entries each. > >>How large are your hash entries? > >16 or 20 bytes If understand you correctly, you used the same number of entries for both, but this discounts one of the advantages of using 32 bits. To make the test fair, you should have them use the same amount of memory. Something like 1,000,000 entries for 32 bit and 800,000 entries for 64 bit. In that case, the higher probability of a collision for the 32 bit table will be ameliorated somewhat by being to fit more entries in the same amount of space. > >>32-bit hash keys have 2 advantages instead of just 1. It is quicker *and* it >>allows for a significantly larger hash table. > >Very true. > >>It would also be helpful to list the NPS of each. > >Don't have those, as they're pretty meaningless anyway. Better to look >at the 'Time' result. > >-- >GCP
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