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| author | Raghul Nanth A <nanth.raghul@gmail.com> | 2023-04-03 22:17:49 +0530 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2023-04-03 11:30:23 -0700 |
| commit | 748b8d669a0d7232c2174e02a20e32284ac05677 (patch) | |
| tree | 84eba57266640d7bf7a8274db7570586eb3f34cb /builtin/describe.c | |
| parent | 8d90352acc5c855620042fdcc6092f23a276af6d (diff) | |
| download | git-748b8d669a0d7232c2174e02a20e32284ac05677.tar.gz | |
describe: enable sparse index for describe
git describe compares the index with the working tree when (and only
when) it is run with the "--dirty" flag. This is done by the
run_diff_index() function. The function has been made aware of the
sparse-index in the series that led to 8d2c3732 (Merge branch
'ld/sparse-diff-blame', 2021-12-21). Hence we can just set the
requires-full-index to false for "describe".
Performance metrics
Test HEAD~1 HEAD
-------------------------------------------------------------------------------------------------
2000.2: git describe --dirty (full-v3) 0.08(0.09+0.01) 0.08(0.06+0.03) +0.0%
2000.3: git describe --dirty (full-v4) 0.09(0.07+0.03) 0.08(0.05+0.04) -11.1%
2000.4: git describe --dirty (sparse-v3) 0.88(0.82+0.06) 0.02(0.01+0.05) -97.7%
2000.5: git describe --dirty (sparse-v4) 0.68(0.60+0.08) 0.02(0.02+0.04) -97.1%
2000.6: echo >>new && git describe --dirty (full-v3) 0.08(0.04+0.05) 0.08(0.05+0.04) +0.0%
2000.7: echo >>new && git describe --dirty (full-v4) 0.08(0.07+0.03) 0.08(0.05+0.04) +0.0%
2000.8: echo >>new && git describe --dirty (sparse-v3) 0.75(0.69+0.07) 0.02(0.03+0.03) -97.3%
2000.9: echo >>new && git describe --dirty (sparse-v4) 0.81(0.73+0.09) 0.02(0.01+0.05) -97.5%
Signed-off-by: Raghul Nanth A <nanth.raghul@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/describe.c')
| -rw-r--r-- | builtin/describe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/describe.c b/builtin/describe.c index 5b5930f5c8..7ff9b5e4b2 100644 --- a/builtin/describe.c +++ b/builtin/describe.c @@ -654,6 +654,8 @@ int cmd_describe(int argc, const char **argv, const char *prefix) int fd, result; setup_work_tree(); + prepare_repo_settings(the_repository); + the_repository->settings.command_requires_full_index = 0; repo_read_index(the_repository); refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); |