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| author |  Ben Peart <benpeart@microsoft.com> | 2017-10-18 10:27:25 -0400 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2017-11-08 10:39:41 +0900 |
| commit | 00ec50e56d136de41f43c33f39cdbee83f3e4458 (patch) | |
| tree | 31f42fd87d978a2d4d3515d7bfa916e4427eb8c7 /builtin | |
| parent | Git 2.14.3 (diff) | |
| download | tgif-00ec50e56d136de41f43c33f39cdbee83f3e4458.tar.xz | |
read_index_from(): speed index loading by skipping verification of the entry order
There is code in post_read_index_from() to catch out of order
entries when reading an index file. This order verification is ~13%
of the cost of every call to read_index_from().
Update check_ce_order() so that it skips this verification unless
the "verify_ce_order" global variable is set.
Teach fsck to force this verification.
The effect can be seen using t/perf/p0002-read-cache.sh:
Test HEAD HEAD~1
--------------------------------------------------------------------------------------
0002.1: read_cache/discard_cache 1000 times 0.41(0.04+0.04) 0.50(0.00+0.10) +22.0%
Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin')
| -rw-r--r-- | builtin/fsck.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/builtin/fsck.c b/builtin/fsck.c index d18244ab54..81cc5ad78d 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -763,6 +763,7 @@ int cmd_fsck(int argc, const char **argv, const char *prefix) if (keep_cache_objects) { verify_index_checksum = 1; + verify_ce_order = 1; read_cache(); for (i = 0; i < active_nr; i++) { unsigned int mode; |