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From: Taylor Blau <me@ttaylorr.com>
To: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
Cc: Git <git@vger.kernel.org>,
	Kaartic Sivaraam <kaartic.sivaraam@gmail.com>,
	Derrick Stolee <derrickstolee@github.com>
Subject: Re: [PATCH 2/6] pack-bitmap: prepare to read lookup table extension
Date: Wed, 22 Jun 2022 17:34:31 -0400	[thread overview]
Message-ID: <YrOK5wf/tvGSFbSH@nand.local> (raw)
In-Reply-To: <20220622171814.46313-1-chakrabortyabhradeep79@gmail.com>

On Wed, Jun 22, 2022 at 10:48:14PM +0530, Abhradeep Chakraborty wrote:
> > Ahhh. Thanks for refreshing my memory. I wonder if you think there is a
> > convenient way to work some of this into a short comment to help other
> > readers in the future, too.
>
> Actually, Derrick has suggested to go with iterative approach[1] instead of
> Recursive approach. What's your view on it?

I don't have a strong feeling about it. In practice, we seem to top out
at ~500 bitmaps or so for large-ish repositories, so I would be
surprised to see this result in stack exhaustion even in the worst case
(every bitmap xor'd with the previous one, forming a long chain).

But it doesn't hurt to be defensive, so I think it's worth it as long as
you don't find the implementation too complex.

> [1] https://lore.kernel.org/git/92dc6860-ff35-0989-5114-fe1e220ca10c@github.com/

Thanks,
Taylor

  reply	other threads:[~2022-06-22 21:34 UTC|newest]

Thread overview: 162+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-20 12:33 [PATCH 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty via GitGitGadget
2022-06-20 12:33 ` [PATCH 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-06-20 16:56   ` Derrick Stolee
2022-06-20 17:09     ` Taylor Blau
2022-06-21  8:31       ` Abhradeep Chakraborty
2022-06-22 16:26         ` Taylor Blau
2022-06-21  8:23     ` Abhradeep Chakraborty
2022-06-20 17:21   ` Taylor Blau
2022-06-21  9:22     ` Abhradeep Chakraborty
2022-06-22 16:29       ` Taylor Blau
2022-06-22 16:45         ` Abhradeep Chakraborty
2022-06-20 20:21   ` Derrick Stolee
2022-06-21 10:08     ` Abhradeep Chakraborty
2022-06-22 16:30       ` Taylor Blau
2022-06-20 12:33 ` [PATCH 2/6] pack-bitmap: prepare to read " Abhradeep Chakraborty via GitGitGadget
2022-06-20 20:49   ` Derrick Stolee
2022-06-21 10:28     ` Abhradeep Chakraborty
2022-06-20 22:06   ` Taylor Blau
2022-06-21 11:52     ` Abhradeep Chakraborty
2022-06-22 16:49       ` Taylor Blau
2022-06-22 17:18         ` Abhradeep Chakraborty
2022-06-22 21:34           ` Taylor Blau [this message]
2022-06-20 12:33 ` [PATCH 3/6] pack-bitmap-write.c: write " Abhradeep Chakraborty via GitGitGadget
2022-06-20 22:16   ` Taylor Blau
2022-06-21 12:50     ` Abhradeep Chakraborty
2022-06-22 16:51       ` Taylor Blau
2022-06-20 12:33 ` [PATCH 4/6] builtin/pack-objects.c: learn pack.writeBitmapLookupTable Taylor Blau via GitGitGadget
2022-06-20 22:18   ` Taylor Blau
2022-06-20 12:33 ` [PATCH 5/6] bitmap-commit-table: add tests for the bitmap lookup table Abhradeep Chakraborty via GitGitGadget
2022-06-22 16:54   ` Taylor Blau
2022-06-20 12:33 ` [PATCH 6/6] bitmap-lookup-table: add performance tests Abhradeep Chakraborty via GitGitGadget
2022-06-22 17:14   ` Taylor Blau
2022-06-26 13:10 ` [PATCH v2 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty via GitGitGadget
2022-06-26 13:10   ` [PATCH v2 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-06-27 14:18     ` Derrick Stolee
2022-06-27 15:48       ` Taylor Blau
2022-06-27 16:51       ` Abhradeep Chakraborty
2022-06-26 13:10   ` [PATCH v2 2/6] pack-bitmap-write.c: write " Abhradeep Chakraborty via GitGitGadget
2022-06-27 14:35     ` Derrick Stolee
2022-06-27 16:12       ` Taylor Blau
2022-06-27 17:10       ` Abhradeep Chakraborty
2022-06-27 16:05     ` Taylor Blau
2022-06-27 18:29       ` Abhradeep Chakraborty
2022-06-26 13:10   ` [PATCH v2 3/6] pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests Abhradeep Chakraborty via GitGitGadget
2022-06-27 14:43     ` Derrick Stolee
2022-06-27 17:42       ` Abhradeep Chakraborty
2022-06-27 17:49         ` Taylor Blau
2022-06-27 17:47     ` Taylor Blau
2022-06-27 18:39       ` Abhradeep Chakraborty
2022-06-29 20:11         ` Taylor Blau
2022-06-26 13:10   ` [PATCH v2 4/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-06-27 15:12     ` Derrick Stolee
2022-06-27 18:06       ` [PATCH v2 4/6] pack-bitmap: prepare to read lookup table Abhradeep Chakraborty
2022-06-27 18:32         ` Derrick Stolee
2022-06-27 21:49       ` [PATCH v2 4/6] pack-bitmap: prepare to read lookup table extension Taylor Blau
2022-06-28  8:59         ` [PATCH v2 4/6] pack-bitmap: prepare to read lookup table Abhradeep Chakraborty
2022-06-29 20:22           ` Taylor Blau
2022-06-30  6:58             ` [PATCH v2 4/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty
2022-06-27 21:38     ` Taylor Blau
2022-06-28 19:25       ` Abhradeep Chakraborty
2022-06-29 20:37         ` Taylor Blau
2022-06-29 20:41           ` Taylor Blau
2022-06-30  8:35           ` Abhradeep Chakraborty
2022-06-26 13:10   ` [PATCH v2 5/6] bitmap-lookup-table: add performance tests for lookup table Abhradeep Chakraborty via GitGitGadget
2022-06-27 21:53     ` Taylor Blau
2022-06-28  7:58       ` Abhradeep Chakraborty
2022-06-29 20:40         ` Taylor Blau
2022-06-26 13:10   ` [PATCH v2 6/6] p5310-pack-bitmaps.sh: enable pack.writeReverseIndex for testing Abhradeep Chakraborty via GitGitGadget
2022-06-27 21:50     ` Taylor Blau
2022-06-28  8:01       ` Abhradeep Chakraborty
2022-07-04  8:46   ` [PATCH v3 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty via GitGitGadget
2022-07-04  8:46     ` [PATCH v3 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-08 16:38       ` Philip Oakley
2022-07-09  7:53         ` Abhradeep Chakraborty
2022-07-10 15:01           ` Philip Oakley
2022-07-14 23:15             ` Taylor Blau
2022-07-15 10:36               ` Philip Oakley
2022-07-15 18:48             ` Abhradeep Chakraborty
2022-07-04  8:46     ` [PATCH v3 2/6] pack-bitmap-write.c: write " Abhradeep Chakraborty via GitGitGadget
2022-07-14 23:26       ` Taylor Blau
2022-07-15  2:22       ` Taylor Blau
2022-07-15 15:58         ` Abhradeep Chakraborty
2022-07-15 22:15           ` Taylor Blau
2022-07-16 11:50             ` Abhradeep Chakraborty
2022-07-26  0:34               ` Taylor Blau
2022-07-18  8:59       ` Martin Ågren
2022-07-04  8:46     ` [PATCH v3 3/6] pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests Abhradeep Chakraborty via GitGitGadget
2022-07-04  8:46     ` [PATCH v3 4/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-15  2:46       ` Taylor Blau
2022-07-15 16:38         ` Abhradeep Chakraborty
2022-07-15 22:20           ` Taylor Blau
2022-07-18  9:06             ` Martin Ågren
2022-07-18 19:25               ` Abhradeep Chakraborty
2022-07-18 23:26                 ` Martin Ågren
2022-07-26  0:45               ` Taylor Blau
2022-07-04  8:46     ` [PATCH v3 5/6] bitmap-lookup-table: add performance tests for lookup table Abhradeep Chakraborty via GitGitGadget
2022-07-15  2:53       ` Taylor Blau
2022-07-15 18:23         ` Abhradeep Chakraborty
2022-07-04  8:46     ` [PATCH v3 6/6] p5310-pack-bitmaps.sh: remove pack.writeReverseIndex Abhradeep Chakraborty via GitGitGadget
2022-07-04 16:35     ` [PATCH v3 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty
2022-07-06 19:21     ` Junio C Hamano
2022-07-07  8:48       ` Abhradeep Chakraborty
2022-07-07 18:09         ` Kaartic Sivaraam
2022-07-07 18:42           ` Abhradeep Chakraborty
2022-07-20 14:05     ` [PATCH v4 " Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 2/6] pack-bitmap-write.c: write " Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 3/6] pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 4/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 5/6] p5310-pack-bitmaps.sh: enable `pack.writeReverseIndex` Abhradeep Chakraborty via GitGitGadget
2022-07-20 14:05       ` [PATCH v4 6/6] bitmap-lookup-table: add performance tests for lookup table Abhradeep Chakraborty via GitGitGadget
2022-07-20 18:38       ` [PATCH v5 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty via GitGitGadget
2022-07-20 18:38         ` [PATCH v5 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-20 18:38         ` [PATCH v5 2/6] pack-bitmap-write.c: write " Abhradeep Chakraborty via GitGitGadget
2022-07-26  0:52           ` Taylor Blau
2022-07-26 18:22             ` Abhradeep Chakraborty
2022-07-20 18:38         ` [PATCH v5 3/6] pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests Abhradeep Chakraborty via GitGitGadget
2022-07-28 19:22           ` Johannes Schindelin
2022-08-02 12:40             ` Abhradeep Chakraborty
2022-08-02 15:35               ` Johannes Schindelin
2022-08-02 17:44                 ` Abhradeep Chakraborty
2022-08-08 13:06                   ` Johannes Schindelin
2022-08-08 13:58                     ` Abhradeep Chakraborty
2022-08-09  9:03                       ` Johannes Schindelin
2022-08-09 12:03                         ` Abhradeep Chakraborty
2022-08-09 12:07                           ` Abhradeep Chakraborty
2022-08-10  9:09                           ` Johannes Schindelin
2022-08-10  9:20                             ` Johannes Schindelin
2022-08-10 10:04                               ` Abhradeep Chakraborty
2022-08-10 17:51                                 ` Derrick Stolee
2022-08-12 18:51                                   ` Abhradeep Chakraborty
2022-08-12 19:22                                     ` Derrick Stolee
2022-08-13 10:59                                       ` Abhradeep Chakraborty
2022-08-16 21:57                                         ` Taylor Blau
2022-08-17 10:02                                           ` Abhradeep Chakraborty
2022-08-17 20:38                                             ` Taylor Blau
2022-08-19 21:49                                               ` Taylor Blau
2022-08-13 11:05                               ` Abhradeep Chakraborty
2022-08-16 18:47                             ` Taylor Blau
2022-07-20 18:38         ` [PATCH v5 4/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-07-26  1:13           ` Taylor Blau
2022-07-26 18:56             ` Abhradeep Chakraborty
2022-07-26 19:36             ` Eric Sunshine
2022-07-20 18:38         ` [PATCH v5 5/6] p5310-pack-bitmaps.sh: enable `pack.writeReverseIndex` Abhradeep Chakraborty via GitGitGadget
2022-07-26  1:18           ` Taylor Blau
2022-07-26  7:15             ` Ævar Arnfjörð Bjarmason
2022-07-26 13:32               ` Derrick Stolee
2022-07-26 13:54                 ` Ævar Arnfjörð Bjarmason
2022-07-26 18:17                   ` Abhradeep Chakraborty
2022-07-20 18:38         ` [PATCH v5 6/6] bitmap-lookup-table: add performance tests for lookup table Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55         ` [PATCH v6 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 1/6] Documentation/technical: describe bitmap lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 2/6] bitmap: move `get commit positions` code to `bitmap_writer_finish` Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 3/6] pack-bitmap-write.c: write lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 4/6] pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 5/6] pack-bitmap: prepare to read lookup table extension Abhradeep Chakraborty via GitGitGadget
2022-08-14 16:55           ` [PATCH v6 6/6] bitmap-lookup-table: add performance tests for lookup table Abhradeep Chakraborty via GitGitGadget
2022-08-19 21:21           ` [PATCH v6 0/6] [GSoC] bitmap: integrate a lookup table extension to the bitmap format Junio C Hamano
2022-08-22 14:42             ` Johannes Schindelin
2022-08-22 14:48               ` Taylor Blau
2022-08-25 22:16           ` Taylor Blau
2022-08-26 16:02             ` Junio C Hamano

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