t/perf/p0003-delta-base-cache.sh

   1 #!/bin/sh
   2
   3 test_description='Test operations that emphasize the delta base cache.
   4
   5 We look at both "log --raw", which should put only trees into the delta cache,
   6 and "log -Sfoo --raw", which should look at both trees and blobs.
   7
   8 Any effects will be emphasized if the test repository is fully packed (loose
   9 objects obviously do not use the delta base cache at all). It is also
  10 emphasized if the pack has long delta chains (e.g., as produced by "gc
  11 --aggressive"), though cache is still quite noticeable even with the default
  12 depth of 50.
  13
  14 The setting of core.deltaBaseCacheLimit in the source repository is also
  15 relevant (depending on the size of your test repo), so be sure it is consistent
  16 between runs.
  17 '
  18 . ./perf-lib.sh
  19
  20 test_perf_large_repo
  21
  22 # puts mostly trees into the delta base cache
  23 test_perf 'log --raw' '
  24         git log --raw >/dev/null
  25 '
  26
  27 test_perf 'log -S' '
  28         git log --raw -Sfoo >/dev/null
  29 '
  30
  31 test_done