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From: Taylor Blau <me@ttaylorr.com>
To: Derrick Stolee <derrickstolee@github.com>
Cc: Taylor Blau <me@ttaylorr.com>,
	git@vger.kernel.org, gitster@pobox.com, peff@peff.net
Subject: Re: [PATCH v2 2/3] midx.c: use `pack-objects --stdin-packs` when repacking
Date: Fri, 23 Sep 2022 14:28:49 -0400	[thread overview]
Message-ID: <Yy364WAutGIdXCub@nand.local> (raw)
In-Reply-To: <5172dbb7-61d1-7249-f9bb-d760e6f4450a@github.com>

On Fri, Sep 23, 2022 at 02:23:30PM -0400, Derrick Stolee wrote:
> Do you know if there is any reason to do this explicitly? Does this
> change the set of objects in any way (perhaps by not including
> duplicates that are tracked in those other packs)?

Yes. The "^" lines become excluded packs from the perspective of the
follow-on reachability traversal to discover the namehashes. So as soon
as we hit an object contained in one of the packs marked as excluded,
we'll halt the traversal along that direction, since we know that we're
not going to pick up any objects in those packs.

So you could omit them, and you'd get the same resulting pack, but it
would take longer to generate since we wouldn't be stopping the
follow-on traversal as early as possible.

Thanks,
Taylor

  reply	other threads:[~2022-09-23 18:28 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <YyokIf%2FSd7SYztKQ@nand.local>
2022-09-20 20:40 ` [PATCH v2 0/3] midx: use `--stdin-packs` to implement `repack` Taylor Blau
2022-09-20 20:40   ` [PATCH v2 1/3] midx.c: compute pack_info array outside of fill_included_packs_batch() Taylor Blau
2022-09-20 20:40   ` [PATCH v2 2/3] midx.c: use `pack-objects --stdin-packs` when repacking Taylor Blau
2022-09-23 18:23     ` Derrick Stolee
2022-09-23 18:28       ` Taylor Blau [this message]
2022-09-23 19:05         ` Derrick Stolee
2022-09-20 20:40   ` [PATCH v2 3/3] midx.c: unify `include_pack` array into `pack_info` struct Taylor Blau
2022-09-20 21:54   ` [PATCH v2 0/3] midx: use `--stdin-packs` to implement `repack` Jeff King
2022-09-21 19:09   ` Junio C Hamano
2022-09-23 18:29     ` Taylor Blau

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