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From: Jonathan Nieder <jrnieder@gmail.com>
To: "SZEDER Gábor" <szeder.dev@gmail.com>
Cc: Mike Hommey <mh@glandium.org>, git@vger.kernel.org
Subject: Re: Revision walking, commit dates, slop
Date: Mon, 20 May 2019 19:00:09 -0700	[thread overview]
Message-ID: <20190521020009.GC32230@google.com> (raw)
In-Reply-To: <20190518015005.GA951@szeder.dev>

SZEDER Gábor wrote:
> On Sat, May 18, 2019 at 09:54:12AM +0900, Mike Hommey wrote:

>> There are established corner cases, where in a repo where commit dates
>> are not monotonically increasing,
[...]
> All the above is without commit-graph, I presume?  If so, then you
> should give it a try, as it might bring immediate help in your
> pathological repo.  With 5k commit in the same second (enforced via
> 'export GIT_COMMITTER_DATE=$(date); for i in {1..5000} ...') I get:

Just to emphasize this point: one field in the commit-graph file is a
generation number (or more generally, a "reachability index" in the
standard jargon).  The reason I'm excited about having this field is
that it will allow us to stop playing games with slop.

So please join forces with Stolee and help us get to that future
sooner. :)

Thanks,
Jonathan

      parent reply	other threads:[~2019-05-21  2:00 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-18  0:54 Revision walking, commit dates, slop Mike Hommey
2019-05-18  1:50 ` SZEDER Gábor
2019-05-18  3:58   ` Mike Hommey
2019-05-18  4:17     ` Mike Hommey
2019-05-18 12:01       ` SZEDER Gábor
2019-05-19 22:28         ` Jakub Narebski
2019-05-20  1:33       ` Derrick Stolee
2019-05-20 11:02         ` Jakub Narebski
2019-05-20 11:20           ` Derrick Stolee
2019-05-20 13:42             ` Jakub Narebski
2019-05-20 23:27               ` Jakub Narebski
2019-05-21  1:20                 ` Derrick Stolee
2019-05-22 18:29                   ` Jakub Narebski
2019-05-22 19:06                     ` Derrick Stolee
2019-05-23 21:04                       ` Jakub Narebski
2019-06-25  7:51               ` Jakub Narebski
2019-06-25 10:54                 ` Derrick Stolee
2019-09-18  8:43                   ` [RFC/PATCH] commit-graph: generation v5 (backward compatible date ceiling) Jakub Narebski
2019-09-18 12:26                     ` Derrick Stolee
2019-05-21 13:14         ` [PATCH] revision: use generation for A..B --topo-order queries Derrick Stolee
2019-05-21 13:59           ` [PATCH 2/2] revision: keep topo-walk free of unintersting commits Derrick Stolee
2019-05-22  2:19             ` Mike Hommey
2019-05-21  2:00   ` Jonathan Nieder [this message]

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