| 1 | #!/bin/sh |
| 2 | |
| 3 | test_description='performance of fetches from bitmapped packs' |
| 4 | . ./perf-lib.sh |
| 5 | |
| 6 | test_fetch_bitmaps () { |
| 7 | test_expect_success 'setup test directory' ' |
| 8 | rm -fr * .git |
| 9 | ' |
| 10 | |
| 11 | test_perf_default_repo |
| 12 | |
| 13 | test_expect_success 'create bitmapped server repo' ' |
| 14 | git config pack.writebitmaps true && |
| 15 | git config pack.writeBitmapLookupTable '"$1"' && |
| 16 | git repack -ad |
| 17 | ' |
| 18 | |
| 19 | # simulate a fetch from a repository that last fetched N days ago, for |
| 20 | # various values of N. We do so by following the first-parent chain, |
| 21 | # and assume the first entry in the chain that is N days older than the current |
| 22 | # HEAD is where the HEAD would have been then. |
| 23 | for days in 1 2 4 8 16 32 64 128; do |
| 24 | title=$(printf '%10s' "($days days)") |
| 25 | test_expect_success "setup revs from $days days ago" ' |
| 26 | now=$(git log -1 --format=%ct HEAD) && |
| 27 | then=$(($now - ($days * 86400))) && |
| 28 | tip=$(git rev-list -1 --first-parent --until=$then HEAD) && |
| 29 | { |
| 30 | echo HEAD && |
| 31 | echo ^$tip |
| 32 | } >revs |
| 33 | ' |
| 34 | |
| 35 | test_perf "server $title (lookup=$1)" ' |
| 36 | git pack-objects --stdout --revs \ |
| 37 | --thin --delta-base-offset \ |
| 38 | <revs >tmp.pack |
| 39 | ' |
| 40 | |
| 41 | test_size "size $title" ' |
| 42 | test_file_size tmp.pack |
| 43 | ' |
| 44 | |
| 45 | test_perf "client $title (lookup=$1)" ' |
| 46 | git index-pack --stdin --fix-thin <tmp.pack |
| 47 | ' |
| 48 | done |
| 49 | } |
| 50 | |
| 51 | test_fetch_bitmaps true |
| 52 | test_fetch_bitmaps false |
| 53 | |
| 54 | test_done |