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From: Jonathan Nieder <jrnieder@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Ævar Arnfjörð Bjarmason <avarab@gmail.com>,
	Clemens Buchacher <drizzd@aon.at>,
	git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 0/4] Speed up git tag --contains
Date: Wed, 6 Jul 2011 01:56:23 -0500
Message-ID: <20110706065623.GB14164@elie> (raw)
In-Reply-To: <20110706064012.GA927@sigill.intra.peff.net>

Jeff King wrote:

> The problem is that existing objects don't have this generation number.
> It's easy to calculate, though, and we could in theory use a notes-cache
> to store it externally. Obviously the complexity and performance aren't
> going to be as good as if it were just in the commit object, but we're
> sadly 6 years too late to make that decision.

I am still digesting the rest of what you wrote, but wouldn't this be
easy to do today?  One could just use a notes-cache while prototyping
and if it seems to work well, introduce new loose and packed object
formats that include a field for the cached generation number.

  parent reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-11 19:04 Ævar Arnfjörð Bjarmason
2011-06-11 19:04 ` [PATCH 1/4] tag: speed up --contains calculation Ævar Arnfjörð Bjarmason
2011-06-11 19:04 ` [PATCH 2/4] limit "contains" traversals based on commit timestamp Ævar Arnfjörð Bjarmason
2011-06-11 19:04 ` [PATCH 3/4] default core.clockskew variable to one day Ævar Arnfjörð Bjarmason
2011-06-11 19:04 ` [PATCH 4/4] Why is "git tag --contains" so slow? Ævar Arnfjörð Bjarmason
2011-07-06  6:40 ` [PATCH 0/4] Speed up git tag --contains Jeff King
2011-07-06  6:54   ` Jeff King
2011-07-06 19:06     ` Clemens Buchacher
2011-07-06  6:56   ` Jonathan Nieder [this message]
2011-07-06  7:03     ` Jeff King
2011-07-06 14:26       ` generation numbers (was: [PATCH 0/4] Speed up git tag --contains) Jakub Narebski
2011-07-06 15:01         ` Ted Ts'o
2011-07-06 18:12           ` Jeff King
2011-07-06 18:46             ` Jakub Narebski
2011-07-07 18:59               ` Jeff King
2011-07-07 19:34                 ` generation numbers Junio C Hamano
2011-07-07 20:31                   ` Jakub Narebski
2011-07-07 20:52                     ` A Large Angry SCM
2011-07-08  0:29                       ` Junio C Hamano
2011-07-08 22:57                   ` Jeff King
2011-07-06 23:22             ` Junio C Hamano
2011-07-07 19:08               ` Jeff King
2011-07-07 20:10                 ` Jakub Narebski
2018-01-12 18:56   ` [PATCH 0/4] Speed up git tag --contains csilvers
2018-03-03  5:15     ` Jeff King
2018-03-08 23:05       ` csilvers
2018-03-12 13:45       ` Derrick Stolee
2018-03-12 23:59         ` Jeff King

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