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From: "H. Peter Anvin" <hpa@zytor.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Christian Couder <chriscool@tuxfamily.org>,
	git@vger.kernel.org, Sam Vilain <sam@vilain.net>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH v3 0/3] automatically skip away from broken commits
Date: Mon, 08 Jun 2009 14:10:18 -0700	[thread overview]
Message-ID: <4A2D7E3A.9060701@zytor.com> (raw)
In-Reply-To: <7vzlcixwue.fsf@alter.siamese.dyndns.org>

Junio C Hamano wrote:
> "H. Peter Anvin" <hpa@zytor.com> writes:
> 
>> The advantage of that -- and I have to admit I don't know if it will
>> ever matter in practice -- is that using an actual PRNG:
>>
>> a) is less likely to get into pathological capture behaviors.
>> b) doesn't make people think later that there is something magic to the
>>    arbitrary chosen numbers.
> 
> My gut feeling agrees with you that both are likely to be true; these are
> good points.
> 
> Christian, what do you think?

Note: I do believe we should keep the obvious optimization of "if there
are no skip points in the plausible range, use the best point."  We
don't want a 39% increase in bisect time when not using skip.

	-hpa

  reply	other threads:[~2009-06-08 21:10 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-06  4:41 [PATCH v3 0/3] automatically skip away from broken commits Christian Couder
2009-06-06  4:41 ` [PATCH v3 1/3] bisect: add parameters to "filter_skipped" Christian Couder
2009-06-06  4:41 ` [PATCH v3 2/3] bisect: when skipping, choose a commit away from a skipped commit Christian Couder
2009-06-06  4:41 ` [PATCH v3 3/3] t6030: test skipping away from an already " Christian Couder
2009-06-06 19:51 ` [PATCH v3 0/3] automatically skip away from broken commits Junio C Hamano
2009-06-07  7:32   ` Christian Couder
2009-06-08  6:06     ` H. Peter Anvin
2009-06-08  7:25       ` Junio C Hamano
2009-06-08 15:51         ` H. Peter Anvin
2009-06-08 21:02           ` Junio C Hamano
2009-06-08 21:10             ` H. Peter Anvin [this message]
2009-06-09  4:24             ` Christian Couder
2009-06-09 10:02               ` Jakub Narebski
2009-06-09 15:11                 ` H. Peter Anvin
2009-06-09 21:55                   ` Jakub Narebski
2009-06-09 22:54                     ` H. Peter Anvin
2009-06-09 12:26               ` Christian Couder
2009-06-09 15:25                 ` H. Peter Anvin
2009-06-09 18:35                   ` Junio C Hamano
2009-06-09 18:42                     ` H. Peter Anvin
2009-06-09 19:28                   ` Christian Couder
2009-06-09 19:32                     ` H. Peter Anvin
2009-06-10  8:14                       ` Christian Couder
2009-06-09 20:37                     ` Junio C Hamano
2009-06-10 19:37                       ` Christian Couder
2009-06-10 21:17                         ` Junio C Hamano
2009-06-10 22:43                           ` H. Peter Anvin
2009-06-11  4:02                           ` Christian Couder
2009-06-11  4:43                             ` H. Peter Anvin
2009-06-11  5:05                               ` H. Peter Anvin
2009-06-12 11:56                                 ` Christian Couder
2009-06-13 19:03                                   ` H. Peter Anvin
2009-06-13 19:35                                     ` Jakub Narebski
2009-06-13 19:57                                       ` H. Peter Anvin
2009-06-15  7:59                                     ` Christian Couder
2009-06-15 13:16                                       ` H. Peter Anvin
2009-06-13  7:50     ` Christian Couder

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