From: Felipe Contreras <felipe.contreras@gmail.com>
To: Junio C Hamano <gitster@pobox.com>, Taylor Blau <me@ttaylorr.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
Derrick Stolee <derrickstolee@github.com>
Subject: Re: [PATCH 3/3] pack-bitmap.c: use commit boundary during bitmap traversal
Date: Tue, 02 May 2023 15:31:31 -0600 [thread overview]
Message-ID: <64518133eea7_200ae2948a@chronos.notmuch> (raw)
In-Reply-To: <xmqqh6t3ztee.fsf@gitster.g>
Junio C Hamano wrote:
> Taylor Blau <me@ttaylorr.com> writes:
> > Relaxing the bitmap traversal to allow it to produce over-counted
> > results gives us the opportunity to make some significant improvements.
> > Instead of the above, the new algorithm only has to walk from the
> > *boundary* down to the nearest bitmap, instead of from each of the
> > UNINTERESTING tips.
>
> Is it only me, or are all readers equally confused by the use of
> the term "boundary" that hasn't been given any definition?
>
> > And is more-or-less equivalent to using the *old* algorithm with this
> > invocation:
> >
> > $ git rev-list --objects --boundary $WANTS --not $HAVES |
>
> It is especially confusing because the "--boundary" (at least as I
> originally had invented it), i.e. a commit that is smudged with
> UNINTERESTING bit, whose parent we did not bother to dig further to
> paint with the same UNINTERESTING bit, is not something we start our
> computation with; it is something we learn _after_ completing the
> history traversing. So I am utterly confused X-<.
I don't know if it's the case, but in my mind all the `--not $HAVES` are
boundaries. Some of these might be overshadowed by another boundary higher up
in the topology and thus not shown, so in a sense are "uninteresting
boundaries".
Perhaps because you invented `--boundary` you think a "boundary" is only an
interesting boundary which must be computed, and all the other are not true
boundaries.
Cheers.
--
Felipe Contreras
next prev parent reply other threads:[~2023-05-02 21:31 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-25 0:00 [PATCH 0/3] pack-bitmap: boundary-based bitmap traversal Taylor Blau
2023-04-25 0:00 ` [PATCH 1/3] revision: support tracking uninteresting commits Taylor Blau
2023-04-25 18:15 ` Derrick Stolee
2023-05-03 21:48 ` Taylor Blau
2023-05-04 13:46 ` Derrick Stolee
2023-05-03 22:08 ` Taylor Blau
2023-05-04 13:59 ` Derrick Stolee
2023-05-05 17:30 ` Taylor Blau
2023-04-25 18:22 ` Junio C Hamano
2023-04-25 18:48 ` Taylor Blau
2023-04-25 0:00 ` [PATCH 2/3] pack-bitmap.c: extract `fill_in_bitmap()` Taylor Blau
2023-04-25 18:32 ` Junio C Hamano
2023-04-25 18:51 ` [PATCH 2/3] pack-bitmap.c: extract `fill_in_bitmap()`t Taylor Blau
2023-04-25 0:00 ` [PATCH 3/3] pack-bitmap.c: use commit boundary during bitmap traversal Taylor Blau
2023-04-25 18:52 ` Junio C Hamano
2023-05-02 21:31 ` Felipe Contreras [this message]
2023-05-03 21:42 ` Taylor Blau
2023-05-03 21:58 ` Junio C Hamano
2023-04-25 18:53 ` Derrick Stolee
2023-04-25 18:02 ` [PATCH 0/3] pack-bitmap: boundary-based " Junio C Hamano
2023-04-25 18:30 ` Derrick Stolee
2023-04-25 18:57 ` Taylor Blau
2023-04-25 19:52 ` Derrick Stolee
2023-05-03 21:43 ` Taylor Blau
2023-04-25 18:06 ` Derrick Stolee
2023-04-25 19:01 ` Taylor Blau
2023-04-25 20:27 ` Derrick Stolee
2023-05-01 22:08 ` Junio C Hamano
2023-05-02 23:52 ` Taylor Blau
2023-05-05 17:27 ` [PATCH v2 0/2] " Taylor Blau
2023-05-05 17:27 ` [PATCH v2 1/2] pack-bitmap.c: extract `fill_in_bitmap()` Taylor Blau
2023-05-05 17:27 ` [PATCH v2 2/2] pack-bitmap.c: use commit boundary during bitmap traversal Taylor Blau
2023-05-05 18:13 ` Derrick Stolee
2023-05-05 18:43 ` Taylor Blau
2023-05-05 17:33 ` [PATCH v2 0/2] pack-bitmap: boundary-based " Junio C Hamano
2023-05-05 17:59 ` Derrick Stolee
2023-05-05 18:46 ` [PATCH v2 0/2] pack-bitmap: boundary-based bitmap traversalt Taylor Blau
2023-05-05 20:45 ` Derrick Stolee
2023-05-08 17:38 ` [PATCH v3 0/3] pack-bitmap: boundary-based bitmap traversal Taylor Blau
2023-05-08 17:38 ` [PATCH v3 1/3] object: add object_array initializer helper function Taylor Blau
2023-05-08 17:38 ` [PATCH v3 2/3] pack-bitmap.c: extract `fill_in_bitmap()` Taylor Blau
2023-05-08 17:38 ` [PATCH v3 3/3] pack-bitmap.c: use commit boundary during bitmap traversal Taylor Blau
2023-05-08 20:53 ` Derrick Stolee
2023-05-08 22:12 ` Taylor Blau
2023-05-10 22:55 ` [PATCH v3 0/3] pack-bitmap: boundary-based " Junio C Hamano
2023-05-10 23:10 ` Taylor Blau
2023-05-11 15:23 ` Derrick Stolee
2023-06-08 16:25 ` [PATCH v4 " Taylor Blau
2023-06-08 16:25 ` [PATCH v4 1/3] object: add object_array initializer helper function Taylor Blau
2023-06-08 16:25 ` [PATCH v4 2/3] pack-bitmap.c: extract `fill_in_bitmap()` Taylor Blau
2023-06-08 16:25 ` [PATCH v4 3/3] pack-bitmap.c: use commit boundary during bitmap traversal Taylor Blau
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