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Re: [PATCH v3 0/3] automatically skip away from broken commits

From
HAH. Peter Anvin <hpa@zytor.com>
Date
Jun 11, 2009, 05:05 UTC
Message-ID
<4A309083.9090907@zytor.com>
In-Reply-To
<4A308B5D.2010704@zytor.com>
H. Peter Anvin wrote:
Show 5 quoted lines
> 
> After playing around with Wolfram Alpha for way too long, it seems that
> a suitable bias function would be to take the fourth root of the PRNG
> value, i.e. raise it to the power 0.25.
>

Urk, I managed to get myself completely confused -- I did the series approximation on the wrong side of inverting the function. The correct power is actually 1.5 (over the range 0 to 1), a value > 1 is necessary to bias the PRNG toward the beginning (x = 0) of the list.

	-hpa
-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.
Previous: H. Peter AnvinNext: Christian Couder
Message 30 of 37 in “automatically skip away from broken commits”
  1. 0/3 automatically skip away from broken commitsChristian Couder, Jun 6, 2009
  2. 1/3 bisect: add parameters to "filter_skipped"Christian Couder, Jun 6, 2009
  3. 2/3 bisect: when skipping, choose a commit away from a skipped commitChristian Couder, Jun 6, 2009
  4. 3/3 t6030: test skipping away from an already skipped commitChristian Couder, Jun 6, 2009
  5. Junio C HamanoJun 6, 2009
  6. Christian CouderJun 7, 2009
  7. H. Peter AnvinJun 8, 2009
  8. Junio C HamanoJun 8, 2009
  9. H. Peter AnvinJun 8, 2009
  10. Junio C HamanoJun 8, 2009
  11. H. Peter AnvinJun 8, 2009
  12. Christian CouderJun 9, 2009
  13. Jakub NarebskiJun 9, 2009
  14. H. Peter AnvinJun 9, 2009
  15. Jakub NarebskiJun 9, 2009
  16. H. Peter AnvinJun 9, 2009
  17. Christian CouderJun 9, 2009
  18. H. Peter AnvinJun 9, 2009
  19. Junio C HamanoJun 9, 2009
  20. H. Peter AnvinJun 9, 2009
  21. Christian CouderJun 9, 2009
  22. H. Peter AnvinJun 9, 2009
  23. Christian CouderJun 10, 2009
  24. Junio C HamanoJun 9, 2009
  25. Christian CouderJun 10, 2009
  26. Junio C HamanoJun 10, 2009
  27. H. Peter AnvinJun 10, 2009
  28. Christian CouderJun 11, 2009
  29. H. Peter AnvinJun 11, 2009
  30. H. Peter AnvinJun 11, 2009
  31. Christian CouderJun 12, 2009
  32. H. Peter AnvinJun 13, 2009
  33. Jakub NarebskiJun 13, 2009
  34. H. Peter AnvinJun 13, 2009
  35. Christian CouderJun 15, 2009
  36. H. Peter AnvinJun 15, 2009
  37. Christian CouderJun 13, 2009

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