| 1 | #!/bin/sh |
| 2 | |
| 3 | test_description='tests pack performance with multi-pack reuse' |
| 4 | |
| 5 | . ./perf-lib.sh |
| 6 | . "${TEST_DIRECTORY}/perf/lib-pack.sh" |
| 7 | |
| 8 | packdir=.git/objects/pack |
| 9 | |
| 10 | test_perf_large_repo |
| 11 | |
| 12 | find_pack () { |
| 13 | for idx in $packdir/pack-*.idx |
| 14 | do |
| 15 | if git show-index <$idx | grep -q "$1" |
| 16 | then |
| 17 | basename $idx |
| 18 | fi || return 1 |
| 19 | done |
| 20 | } |
| 21 | |
| 22 | repack_into_n_chunks () { |
| 23 | git repack -adk && |
| 24 | |
| 25 | test "$1" -eq 1 && return || |
| 26 | |
| 27 | find $packdir -type f | sort >packs.before && |
| 28 | |
| 29 | # partition the repository into $1 chunks of consecutive commits, and |
| 30 | # then create $1 packs with the objects reachable from each chunk |
| 31 | # (excluding any objects reachable from the previous chunks) |
| 32 | sz="$(($(git rev-list --count --all) / $1))" |
| 33 | for rev in $(git rev-list --all | awk "NR % $sz == 0" | tac) |
| 34 | do |
| 35 | pack="$(echo "$rev" | git pack-objects --revs \ |
| 36 | --honor-pack-keep --delta-base-offset $packdir/pack)" && |
| 37 | touch $packdir/pack-$pack.keep || return 1 |
| 38 | done |
| 39 | |
| 40 | # grab any remaining objects not packed by the previous step(s) |
| 41 | git pack-objects --revs --all --honor-pack-keep --delta-base-offset \ |
| 42 | $packdir/pack && |
| 43 | |
| 44 | find $packdir -type f | sort >packs.after && |
| 45 | |
| 46 | # and install the whole thing |
| 47 | for f in $(comm -12 packs.before packs.after) |
| 48 | do |
| 49 | rm -f "$f" || return 1 |
| 50 | done |
| 51 | rm -fr $packdir/*.keep |
| 52 | } |
| 53 | |
| 54 | for nr_packs in 1 10 100 |
| 55 | do |
| 56 | test_expect_success "create $nr_packs-pack scenario" ' |
| 57 | repack_into_n_chunks $nr_packs |
| 58 | ' |
| 59 | |
| 60 | test_expect_success "setup bitmaps for $nr_packs-pack scenario" ' |
| 61 | find $packdir -type f -name "*.idx" | sed -e "s/.*\///" | |
| 62 | git multi-pack-index write --stdin-packs --bitmap \ |
| 63 | --preferred-pack="$(find_pack $(git rev-parse HEAD))" |
| 64 | ' |
| 65 | |
| 66 | for reuse in single multi |
| 67 | do |
| 68 | test_perf "clone for $nr_packs-pack scenario ($reuse-pack reuse)" " |
| 69 | git for-each-ref --format='%(objectname)' refs/heads refs/tags >in && |
| 70 | git -c pack.allowPackReuse=$reuse pack-objects \ |
| 71 | --revs --delta-base-offset --use-bitmap-index \ |
| 72 | --stdout <in >result |
| 73 | " |
| 74 | |
| 75 | test_size "clone size for $nr_packs-pack scenario ($reuse-pack reuse)" ' |
| 76 | test_file_size result |
| 77 | ' |
| 78 | done |
| 79 | done |
| 80 | |
| 81 | test_done |