fast-export and fast-import can easily handle the simple rewrite that
was being done by filter-branch, and should be faster on systems with a
slow fork. Measuring the overall time taken for all of t3427 (not just
the difference between filter-branch and fast-export/fast-import) shows
a speedup of about 5% on Linux and 11% on Mac.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
This patch is meant to be added onto the end of js/rebase-r-strategy; an
earlier version of this patch conflicted js/rebase-r-strategy so now I'm
basing on top of that series. The speedup is also less impressive now
that there is only one filter-branch invocation being replaced instead of
a handful. Still a nice speedup, though.
t/t3427-rebase-subtree.sh | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/t/t3427-rebase-subtree.sh b/t/t3427-rebase-subtree.sh
index 39e348de16..bec48e6a1f 100755
--- a/t/t3427-rebase-subtree.sh
+++ b/t/t3427-rebase-subtree.sh
@@ -59,7 +59,10 @@ test_expect_success 'setup' '
test_commit files_subtree/master5 &&
git checkout -b to-rebase &&
- git filter-branch --prune-empty -f --subdirectory-filter files_subtree &&
+ git fast-export --no-data HEAD -- files_subtree/ |
+ sed -e "s%\([0-9a-f]\{40\} \)files_subtree/%\1%" |
+ git fast-import --force --quiet &&
+ git reset --hard &&
git commit -m "Empty commit" --allow-empty
'
--
2.22.0.19.ga495766805
