From: Colin Stagner <ask+git@howdoi•land>
To: git@vger•kernel.org, Christian Heusel <christian@heusel•eu>,
george@mail•dietrich.pub
Cc: Colin Stagner <ask+git@howdoi•land>,
Christian Hesse <list@eworm•de>,
Phillip Wood <phillip.wood@dunelm•org.uk>,
Junio C Hamano <gitster@pobox•com>
Subject: [PATCH 0/3] contrib/subtree: reduce recursion during split
Date: Sun, 15 Feb 2026 14:17:42 -0600 [thread overview]
Message-ID: <20260215201748.889866-1-ask+git@howdoi.land> (raw)
* cs/subtree-split-recursion: when processing large history
graphs on Debian or Ubuntu, "git subtree" can die with a
"recursion depth reached" error. Reduce recursion.
On Debian's POSIX sh, shell recursion is artificially limited
to 1000 calls. You can check if your sh has limited recursion
with:
#!/bin/sh
recurse() {
r=$(( r + 1 ))
test "$r" -le 1000 || { echo OK; exit; }
recurse
} && r=0 && recurse
Depending on the history graph, subtree split can recurse deeply
enough to encounter this limit. Rewrite the rejoin-deepening
algorithm to reduce recursive calls.
Colin Stagner (3):
contrib/subtree: reduce function side-effects
contrib/subtree: functionalize split traversal
contrib/subtree: reduce recursion during split
contrib/subtree/git-subtree.sh | 95 +++++++++++++++++++++++++++++++---
1 file changed, 88 insertions(+), 7 deletions(-)
base-commit: 852829b3dd2fe4e7c7fc4d8badde644cf1b66c74
--
2.43.0
next reply other threads:[~2026-02-15 20:18 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-15 20:17 Colin Stagner [this message]
2026-02-15 20:17 ` [PATCH 1/3] contrib/subtree: reduce function side-effects Colin Stagner
2026-02-15 20:17 ` [PATCH 2/3] contrib/subtree: functionalize split traversal Colin Stagner
2026-02-15 20:17 ` [PATCH 3/3] contrib/subtree: reduce recursion during split Colin Stagner
2026-03-05 23:55 ` [PATCH v2 0/3] " Colin Stagner
2026-03-05 23:55 ` [PATCH v2 1/3] contrib/subtree: reduce function side-effects Colin Stagner
2026-03-05 23:55 ` [PATCH v2 2/3] contrib/subtree: functionalize split traversal Colin Stagner
2026-03-05 23:55 ` [PATCH v2 3/3] contrib/subtree: reduce recursion during split Colin Stagner
2026-03-13 22:51 ` [PATCH v2 0/3] " Junio C Hamano
2026-03-13 23:06 ` Junio C Hamano
2026-04-15 17:58 ` Junio C Hamano
2026-04-15 21:39 ` Ben Knoble
2026-04-16 13:25 ` Ian Jackson
2026-04-16 19:34 ` Junio C Hamano
2026-04-17 4:50 ` Colin Stagner
2026-04-19 19:55 ` Ian Jackson
2026-04-20 1:09 ` Ben Knoble
2026-04-20 1:50 ` Junio C Hamano
2026-04-20 9:57 ` Ian Jackson
2026-04-21 5:07 ` Colin Stagner
2026-04-22 9:43 ` Johannes Schindelin
2026-04-22 17:12 ` git-subtree rewrite Ian Jackson
2026-06-01 22:13 ` [PATCH v2 0/3] contrib/subtree: reduce recursion during split Junio C Hamano
2026-06-02 9:06 ` Ian Jackson
2026-06-03 1:37 ` Colin Stagner
2026-06-03 9:12 ` Ian Jackson
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