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From Stas Bekman <>
Subject Re: a new utility: failure tests sequence finder
Date Fri, 07 Dec 2001 17:02:30 GMT
Currently I use a random size windowing algorithm to try to reduce the 
number of tests that cause the problem to a minimum, but I realize that 
it may not work in some cases since it's random. I need your help with 
coming up with a few algorithms to apply to the long sequence of tests 
to effectively and fast reduce it to a minimum.

After the first run, it's possible that the sequence will include 500 
tests. Currently I the algorithm that picks a slice from this sequence 
using random edges. From preliminary testing in some cases it reduces 
500 tests to 2 in just a few runs, but in some cases it just cannot 
reduce at all. It's random after all.

I was thinking to try first something like binary search, but chances 
that it'll work are not big since it's possible that there are two tests 
causing to the failure of the third and they can be located in different 
halves of the sequence. I guess I should try it anyway.

I was think about the password cracker that applies a set of different 
algoritms for each path, and I was thinking to take the same route, to 
improve the efficiency of this utility (after all tests are running very 
slow). But I'm not sure which other algorithms I could try.

So if you have any insights please let me know. Thanks a lot!

Stas Bekman             JAm_pH      --   Just Another mod_perl Hacker      mod_perl Guide

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