Just as rev-list recently learned to combine filters and bitmaps, let's
do the same for pack-objects. The infrastructure is all there; we just
need to pass along our filter options, and the pack-bitmap code will
decide to use bitmaps or not.
This unsurprisingly makes things faster for partial clones of large
repositories (here we're cloning linux.git):
Test HEAD^ HEAD
------------------------------------------------------------------------------
5310.11: simulated partial clone 38.94(37.28+5.87) 11.06(11.27+4.07) -71.6%
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
builtin/pack-objects.c | 3 +--
t/perf/p5310-pack-bitmaps.sh | 4 ++++
t/t5310-pack-bitmaps.sh | 14 ++++++++++++++
3 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 2bb81c2133..6bc9bc1ce2 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -3040,7 +3040,7 @@ static int pack_options_allow_reuse(void)
static int get_object_list_from_bitmap(struct rev_info *revs)
{
- if (!(bitmap_git = prepare_bitmap_walk(revs, NULL)))
+ if (!(bitmap_git = prepare_bitmap_walk(revs, &filter_options)))
return -1;
if (pack_options_allow_reuse() &&
@@ -3419,7 +3419,6 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
if (filter_options.choice) {
if (!pack_to_stdout)
die(_("cannot use --filter without --stdout"));
- use_bitmap_index = 0;
}
/*
diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh
index 8b43a545c1..7743f4f4c9 100755
--- a/t/perf/p5310-pack-bitmaps.sh
+++ b/t/perf/p5310-pack-bitmaps.sh
@@ -57,6 +57,10 @@ test_perf 'rev-list count with blob:limit=1k' '
--filter=blob:limit=1k >/dev/null
'
+test_perf 'simulated partial clone' '
+ git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
+'
+
test_expect_success 'create partial bitmap state' '
# pick a commit to represent the repo tip in the past
cutoff=$(git rev-list HEAD~100 -1) &&
diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh
index 2c64d0c441..8318781d2b 100755
--- a/t/t5310-pack-bitmaps.sh
+++ b/t/t5310-pack-bitmaps.sh
@@ -107,6 +107,20 @@ test_expect_success 'clone from bitmapped repository' '
test_cmp expect actual
'
+test_expect_success 'partial clone from bitmapped repository' '
+ test_config uploadpack.allowfilter true &&
+ git clone --no-local --bare --filter=blob:none . partial-clone.git &&
+ (
+ cd partial-clone.git &&
+ pack=$(echo objects/pack/*.pack) &&
+ git verify-pack -v "$pack" >have &&
+ awk "/blob/ { print \$1 }" <have >blobs &&
+ # we expect this single blob because of the direct ref
+ git rev-parse refs/tags/tagged-blob >expect &&
+ test_cmp expect blobs
+ )
+'
+
test_expect_success 'setup further non-bitmapped commits' '
test_commit_bulk --id=further 10
'
--
2.25.0.796.gcc29325708
