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 test_perf 'repack to disk' '
  19         git repack -ad
  20 '
  21
  22 test_perf 'simulated clone' '
  23         git pack-objects --stdout --all </dev/null >/dev/null
  24 '
  25
  26 test_perf 'simulated fetch' '
  27         have=$(git rev-list HEAD~100 -1) &&
  28         {
  29                 echo HEAD &&
  30                 echo ^$have
  31         } | git pack-objects --revs --stdout >/dev/null
  32 '
  33
  34 test_perf 'pack to file (bitmap)' '
  35         git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
  36 '
  37
  38 test_perf 'rev-list (commits)' '
  39         git rev-list --all --use-bitmap-index >/dev/null
  40 '
  41
  42 test_perf 'rev-list (objects)' '
  43         git rev-list --all --use-bitmap-index --objects >/dev/null
  44 '
  45
  46 test_perf 'rev-list count with blob:none' '
  47         git rev-list --use-bitmap-index --count --objects --all \
  48                 --filter=blob:none >/dev/null
  49 '
  50
  51 test_perf 'rev-list count with blob:limit=1k' '
  52         git rev-list --use-bitmap-index --count --objects --all \
  53                 --filter=blob:limit=1k >/dev/null
  54 '
  55
  56 test_perf 'simulated partial clone' '
  57         git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
  58 '
  59
  60 test_expect_success 'create partial bitmap state' '
  61         # pick a commit to represent the repo tip in the past
  62         cutoff=$(git rev-list HEAD~100 -1) &&
  63         orig_tip=$(git rev-parse HEAD) &&
  64
  65         # now kill off all of the refs and pretend we had
  66         # just the one tip
  67         rm -rf .git/logs .git/refs/* .git/packed-refs &&
  68         git update-ref HEAD $cutoff &&
  69
  70         # and then repack, which will leave us with a nice
  71         # big bitmap pack of the "old" history, and all of
  72         # the new history will be loose, as if it had been pushed
  73         # up incrementally and exploded via unpack-objects
  74         git repack -Ad &&
  75
  76         # and now restore our original tip, as if the pushes
  77         # had happened
  78         git update-ref HEAD $orig_tip
  79 '
  80
  81 test_perf 'clone (partial bitmap)' '
  82         git pack-objects --stdout --all </dev/null >/dev/null
  83 '
  84
  85 test_perf 'pack to file (partial bitmap)' '
  86         git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
  87 '
  88
  89 test_done