(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('test_description', {[SQ <LIT_CHARS "Tests pack performance using bitmaps">]})])
  (Com {[LIT_CHARS .]} {[LIT_CHARS ./perf-lib.sh]})
  (Com {[LIT_CHARS test_perf_large_repo]})
  (Com {[LIT_CHARS test_expect_success]} {[SQ <LIT_CHARS "setup bitmap config">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit config pack.writebitmaps true &&\n"> <LIT_CHARS "\tgit config pack.writebitmaphashcache true\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "repack to disk">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit repack -ad\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "simulated clone">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit pack-objects --stdout --all </dev/null >/dev/null\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "simulated fetch">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\thave=$(git rev-list HEAD~100 -1) &&\n"> <LIT_CHARS "\t{\n"> <LIT_CHARS "\t\techo HEAD &&\n"> <LIT_CHARS "\t\techo ^$have\n"> <LIT_CHARS "\t} | git pack-objects --revs --stdout >/dev/null\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "pack to file">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit pack-objects --all pack1 </dev/null >/dev/null\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "pack to file (bitmap)">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null\n">]})
  (Com {[LIT_CHARS test_expect_success]} {[SQ <LIT_CHARS "create partial bitmap state">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\t# pick a commit to represent the repo tip in the past\n"> <LIT_CHARS "\tcutoff=$(git rev-list HEAD~100 -1) &&\n"> <LIT_CHARS "\torig_tip=$(git rev-parse HEAD) &&\n"> <LIT_CHARS "\n"> <LIT_CHARS "\t# now kill off all of the refs and pretend we had\n"> <LIT_CHARS "\t# just the one tip\n"> <LIT_CHARS "\trm -rf .git/logs .git/refs/* .git/packed-refs &&\n"> <LIT_CHARS "\tgit update-ref HEAD $cutoff &&\n"> <LIT_CHARS "\n"> <LIT_CHARS "\t# and then repack, which will leave us with a nice\n"> <LIT_CHARS "\t# big bitmap pack of the \"old\" history, and all of\n"> <LIT_CHARS "\t# the new history will be loose, as if it had been pushed\n"> <LIT_CHARS "\t# up incrementally and exploded via unpack-objects\n"> <LIT_CHARS "\tgit repack -Ad &&\n"> <LIT_CHARS "\n"> <LIT_CHARS "\t# and now restore our original tip, as if the pushes\n"> <LIT_CHARS "\t# had happened\n"> <LIT_CHARS "\tgit update-ref HEAD $orig_tip\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "clone (partial bitmap)">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit pack-objects --stdout --all </dev/null >/dev/null\n">]})
  (Com {[LIT_CHARS test_perf]} {[SQ <LIT_CHARS "pack to file (partial bitmap)">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tgit pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null\n">]})
  (Com {[LIT_CHARS test_done]})
)