t/perf/p5326-multi-pack-bitmaps.sh

   1 #!/bin/sh
   2
   3 test_description='Tests performance using midx bitmaps'
   4 . ./perf-lib.sh
   5 . "${TEST_DIRECTORY}/perf/lib-bitmap.sh"
   6
   7 test_perf_large_repo
   8
   9 # we need to create the tag up front such that it is covered by the repack and
  10 # thus by generated bitmaps.
  11 test_expect_success 'create tags' '
  12         git tag --message="tag pointing to HEAD" perf-tag HEAD
  13 '
  14
  15 test_expect_success 'start with bitmapped pack' '
  16         git repack -adb
  17 '
  18
  19 test_perf 'setup multi-pack index' '
  20         git multi-pack-index write --bitmap
  21 '
  22
  23 test_expect_success 'drop pack bitmap' '
  24         rm -f .git/objects/pack/pack-*.bitmap
  25 '
  26
  27 test_full_bitmap
  28
  29 test_expect_success 'create partial bitmap state' '
  30         # pick a commit to represent the repo tip in the past
  31         cutoff=$(git rev-list HEAD~100 -1) &&
  32         orig_tip=$(git rev-parse HEAD) &&
  33
  34         # now pretend we have just one tip
  35         rm -rf .git/logs .git/refs/* .git/packed-refs &&
  36         git update-ref HEAD $cutoff &&
  37
  38         # and then repack, which will leave us with a nice
  39         # big bitmap pack of the "old" history, and all of
  40         # the new history will be loose, as if it had been pushed
  41         # up incrementally and exploded via unpack-objects
  42         git repack -Ad &&
  43         git multi-pack-index write --bitmap &&
  44
  45         # and now restore our original tip, as if the pushes
  46         # had happened
  47         git update-ref HEAD $orig_tip
  48 '
  49
  50 test_partial_bitmap
  51
  52 test_done