t/perf/p5310-pack-bitmaps.sh

   1 #!/bin/sh
   2
   3 test_description='Tests pack performance using bitmaps'
   4 . ./perf-lib.sh
   5
   6 test_perf_large_repo
   7
   8 # note that we do everything through config,
   9 # since we want to be able to compare bitmap-aware
  10 # git versus non-bitmap git
  11 #
  12 # We intentionally use the deprecated pack.writebitmaps
  13 # config so that we can test against older versions of git.
  14 test_expect_success 'setup bitmap config' '
  15         git config pack.writebitmaps true
  16 '
  17
  18 # we need to create the tag up front such that it is covered by the repack and
  19 # thus by generated bitmaps.
  20 test_expect_success 'create tags' '
  21         git tag --message="tag pointing to HEAD" perf-tag HEAD
  22 '
  23
  24 test_perf 'repack to disk' '
  25         git repack -ad
  26 '
  27
  28 test_perf 'simulated clone' '
  29         git pack-objects --stdout --all </dev/null >/dev/null
  30 '
  31
  32 test_perf 'simulated fetch' '
  33         have=$(git rev-list HEAD~100 -1) &&
  34         {
  35                 echo HEAD &&
  36                 echo ^$have
  37         } | git pack-objects --revs --stdout >/dev/null
  38 '
  39
  40 test_perf 'pack to file (bitmap)' '
  41         git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
  42 '
  43
  44 test_perf 'rev-list (commits)' '
  45         git rev-list --all --use-bitmap-index >/dev/null
  46 '
  47
  48 test_perf 'rev-list (objects)' '
  49         git rev-list --all --use-bitmap-index --objects >/dev/null
  50 '
  51
  52 test_perf 'rev-list with tag negated via --not --all (objects)' '
  53         git rev-list perf-tag --not --all --use-bitmap-index --objects >/dev/null
  54 '
  55
  56 test_perf 'rev-list with negative tag (objects)' '
  57         git rev-list HEAD --not perf-tag --use-bitmap-index --objects >/dev/null
  58 '
  59
  60 test_perf 'rev-list count with blob:none' '
  61         git rev-list --use-bitmap-index --count --objects --all \
  62                 --filter=blob:none >/dev/null
  63 '
  64
  65 test_perf 'rev-list count with blob:limit=1k' '
  66         git rev-list --use-bitmap-index --count --objects --all \
  67                 --filter=blob:limit=1k >/dev/null
  68 '
  69
  70 test_perf 'rev-list count with tree:0' '
  71         git rev-list --use-bitmap-index --count --objects --all \
  72                 --filter=tree:0 >/dev/null
  73 '
  74
  75 test_perf 'simulated partial clone' '
  76         git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
  77 '
  78
  79 test_expect_success 'create partial bitmap state' '
  80         # pick a commit to represent the repo tip in the past
  81         cutoff=$(git rev-list HEAD~100 -1) &&
  82         orig_tip=$(git rev-parse HEAD) &&
  83
  84         # now kill off all of the refs and pretend we had
  85         # just the one tip
  86         rm -rf .git/logs .git/refs/* .git/packed-refs &&
  87         git update-ref HEAD $cutoff &&
  88
  89         # and then repack, which will leave us with a nice
  90         # big bitmap pack of the "old" history, and all of
  91         # the new history will be loose, as if it had been pushed
  92         # up incrementally and exploded via unpack-objects
  93         git repack -Ad &&
  94
  95         # and now restore our original tip, as if the pushes
  96         # had happened
  97         git update-ref HEAD $orig_tip
  98 '
  99
 100 test_perf 'clone (partial bitmap)' '
 101         git pack-objects --stdout --all </dev/null >/dev/null
 102 '
 103
 104 test_perf 'pack to file (partial bitmap)' '
 105         git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
 106 '
 107
 108 test_perf 'rev-list with tree filter (partial bitmap)' '
 109         git rev-list --use-bitmap-index --count --objects --all \
 110                 --filter=tree:0 >/dev/null
 111 '
 112
 113 test_done