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From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Cc: Miklos Vajna <vmiklos@collabora.com>
Subject: Performance regression in `git log --follow`
Date: Tue, 13 Oct 2026 15:55:01 +0200	[thread overview]
Message-ID: <as44NVKZA9C9S5ae@pks.im> (raw)

Hi,

a user on IRC reported a performance regression in linux.git:

    $ git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
    $ git -C linux log --stat --follow -- include/linux/rsc_table.h

I was able to reproduce the performance regression: while this command
takes roughly 33 seconds with Git 2.55, it takes almost 8 minutes with
Git 2.56.

I've bisected the regression to 304812ed33 (log: improve --follow
following renames for non-linear history, 2026-06-22). I don't have time
right now to debug any further, so I decided to just forward the report
to the mailing list. I've also Cc'd the original author of the above
commit.

Thanks!

Patrick

             reply	other threads:[~2026-10-13 13:55 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-13 13:55 Patrick Steinhardt [this message]
2026-10-13 21:24 ` Performance regression in `git log --follow` SZEDER Gábor

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