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From: Eric Wong <e@80x24.org>
To: Jeff King <peff@peff.net>
Cc: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>,
	git@vger.kernel.org, gitster@pobox.com, me@ttaylorr.com,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Derrick Stolee" <derrickstolee@github.com>,
	"Konstantin Ryabitsev" <konstantin@linuxfoundation.org>
Subject: Re: [PATCH v2] object-file: reprepare alternates when necessary
Date: Thu, 9 Mar 2023 09:06:08 +0000	[thread overview]
Message-ID: <20230309090608.M92573@dcvr> (raw)
In-Reply-To: <ZAmJtnLgwimRBGTb@coredump.intra.peff.net>

Jeff King <peff@peff.net> wrote:
> The only downside might be performance. For sane cases, I think scanning
> the new alternates is OK. I know Eric (cc'd) has some crazy
> 100k-alternate setup (from 407532f82d, etc), but I'd expect a reprepare
> there is already expensive (we already have to re-scan every one of
> those directories for packfiles, and throw out any loose object caches).

I'm not sure if that 100k alternate thing is happening, yet...
(initial specs called for ~30k, but I figured it might grow)

If it does, I'm thinking about enhancing --batch-command, to support
`add-alternate' to dynamically add alternates while running cat-file.

Right now, my biggest use case is only 250 alternates or so.

  reply	other threads:[~2023-03-09  9:07 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-06 20:59 [PATCH] object-file: reprepare alternates when necessary Derrick Stolee via GitGitGadget
2023-03-06 22:54 ` Junio C Hamano
2023-03-07  0:28   ` Taylor Blau
2023-03-07 14:52     ` Derrick Stolee
2023-03-07 17:16       ` Junio C Hamano
2023-03-08 15:55       ` Taylor Blau
2023-03-08 17:13         ` Derrick Stolee
2023-03-07 11:28 ` Ævar Arnfjörð Bjarmason
2023-03-07 17:29   ` Junio C Hamano
2023-03-07 18:18     ` Junio C Hamano
2023-03-08 13:29     ` Derrick Stolee
2023-03-08 18:47 ` [PATCH v2] " Derrick Stolee via GitGitGadget
2023-03-08 19:35   ` Junio C Hamano
2023-03-08 20:47     ` Taylor Blau
2023-03-09  7:24   ` Jeff King
2023-03-09  9:06     ` Eric Wong [this message]
2023-03-10 21:29   ` Jonathan Tan
2023-03-11  0:01     ` Junio C Hamano
2023-03-11  3:09       ` Jonathan Tan

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