t/perf/lib-bitmap.sh

   1 # Helper functions for testing bitmap performance; see p5310.
   2
   3 test_full_bitmap () {
   4         test_perf 'simulated clone' '
   5                 git pack-objects --stdout --all </dev/null >/dev/null
   6         '
   7
   8         test_perf 'simulated fetch' '
   9                 have=$(git rev-list HEAD~100 -1) &&
  10                 {
  11                         echo HEAD &&
  12                         echo ^$have
  13                 } | git pack-objects --revs --stdout >/dev/null
  14         '
  15
  16         test_perf 'pack to file (bitmap)' '
  17                 git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
  18         '
  19
  20         test_perf 'rev-list (commits)' '
  21                 git rev-list --all --use-bitmap-index >/dev/null
  22         '
  23
  24         test_perf 'rev-list (objects)' '
  25                 git rev-list --all --use-bitmap-index --objects >/dev/null
  26         '
  27
  28         test_perf 'rev-list with tag negated via --not --all (objects)' '
  29                 git rev-list perf-tag --not --all --use-bitmap-index --objects >/dev/null
  30         '
  31
  32         test_perf 'rev-list with negative tag (objects)' '
  33                 git rev-list HEAD --not perf-tag --use-bitmap-index --objects >/dev/null
  34         '
  35
  36         test_perf 'rev-list count with blob:none' '
  37                 git rev-list --use-bitmap-index --count --objects --all \
  38                         --filter=blob:none >/dev/null
  39         '
  40
  41         test_perf 'rev-list count with blob:limit=1k' '
  42                 git rev-list --use-bitmap-index --count --objects --all \
  43                         --filter=blob:limit=1k >/dev/null
  44         '
  45
  46         test_perf 'rev-list count with tree:0' '
  47                 git rev-list --use-bitmap-index --count --objects --all \
  48                         --filter=tree:0 >/dev/null
  49         '
  50
  51         test_perf 'simulated partial clone' '
  52                 git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
  53         '
  54 }
  55
  56 test_partial_bitmap () {
  57         test_perf 'clone (partial bitmap)' '
  58                 git pack-objects --stdout --all </dev/null >/dev/null
  59         '
  60
  61         test_perf 'pack to file (partial bitmap)' '
  62                 git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
  63         '
  64
  65         test_perf 'rev-list with tree filter (partial bitmap)' '
  66                 git rev-list --use-bitmap-index --count --objects --all \
  67                         --filter=tree:0 >/dev/null
  68         '
  69 }
  70
  71 test_pack_bitmap () {
  72         test_perf "repack to disk" '
  73                 git repack -ad
  74         '
  75
  76         test_full_bitmap
  77
  78         test_expect_success "create partial bitmap state" '
  79                 # pick a commit to represent the repo tip in the past
  80                 cutoff=$(git rev-list HEAD~100 -1) &&
  81                 orig_tip=$(git rev-parse HEAD) &&
  82
  83                 # now kill off all of the refs and pretend we had
  84                 # just the one tip
  85                 rm -rf .git/logs .git/refs/* .git/packed-refs &&
  86                 git update-ref HEAD $cutoff &&
  87
  88                 # and then repack, which will leave us with a nice
  89                 # big bitmap pack of the "old" history, and all of
  90                 # the new history will be loose, as if it had been pushed
  91                 # up incrementally and exploded via unpack-objects
  92                 git repack -Ad &&
  93
  94                 # and now restore our original tip, as if the pushes
  95                 # had happened
  96                 git update-ref HEAD $orig_tip
  97         '
  98
  99         test_partial_bitmap
 100 }