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commit: run git gc --auto just before the post-commit hook

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Change the behavior of git-commit back to what it was back in
d4bb43ee27 ("Invoke "git gc --auto" from commit, merge, am and
rebase.", 2007-09-05) when it was git-commit.sh.

Shortly afterwards in f5bbc3225c ("Port git commit to C.", 2007-11-08)
when it was ported to C, the "git gc --auto" invocation went away.

Since that unintended regression, git gc --auto only ran for git-am,
git-merge, git-fetch, and git-receive-pack.  It was possible to
write a script that would "git commit" a lot of data locally, and gc
would never run.

One such repository that was locally committing generated zone file
changes had grown to a size of ~60GB before a daily cronjob was added
to "git gc", bringing it down to less than 1GB. This will make such
cases work without intervention.

I think fixing such pathological cases where the repository will grow
forever is a worthwhile trade-off for spending a couple of
milliseconds calling "git gc --auto" (in the common cases where it
doesn't do anything).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2018-02-28 23:04:25 +00:00 committed by Junio C Hamano
parent 38e79b1fda
commit 095c741edd
1 changed files with 2 additions and 0 deletions
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2
builtin/commit.c
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@ -1615,6 +1615,7 @@ int run_commit_hook(int editor_is_used, const char *index_file, const char *name
int cmd_commit(int argc, const char **argv, const char *prefix)
{
const char *argv_gc_auto[] = {"gc", "--auto", NULL};
static struct wt_status s;
static struct option builtin_commit_options[] = {
OPT__QUIET(&quiet, N_("suppress summary after successful commit")),
@ -1835,6 +1836,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
"not exceeded, and then \"git reset HEAD\" to recover."));
rerere(0);
run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
run_commit_hook(use_editor, get_index_file(), "post-commit", NULL);
if (amend && !no_post_rewrite) {
struct notes_rewrite_cfg *cfg;