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| author | Jeff Hostetler <jeffhost@microsoft.com> | 2017-04-14 20:32:21 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2017-04-15 07:58:36 (GMT) |
| commit | a33fc72fe911fdb8e284c94e08e8f1dafe4d3187 (patch) | |
| tree | cda596575083fbfb2ad1c30ad449926931abe669 /builtin | |
| parent | e1104a5ee539408b81566066aaa6963cb87d5cd6 (diff) | |
| download | git-a33fc72fe911fdb8e284c94e08e8f1dafe4d3187.zip git-a33fc72fe911fdb8e284c94e08e8f1dafe4d3187.tar.gz git-a33fc72fe911fdb8e284c94e08e8f1dafe4d3187.tar.bz2 | |
read-cache: force_verify_index_checksum
Teach git to skip verification of the SHA1-1 checksum at the end of
the index file in verify_hdr() which is called from read_index()
unless the "force_verify_index_checksum" global variable is set.
Teach fsck to force this verification.
The checksum verification is for detecting disk corruption, and for
small projects, the time it takes to compute SHA-1 is not that
significant, but for gigantic repositories this calculation adds
significant time to every command.
These effect can be seen using t/perf/p0002-read-cache.sh:
Test HEAD~1 HEAD
--------------------------------------------------------------------------------------
0002.1: read_cache/discard_cache 1000 times 0.66(0.44+0.20) 0.30(0.27+0.02) -54.5%
Signed-off-by: Jeff Hostetler <jeffhost@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 f76e416..b5e13a4 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -771,6 +771,7 @@ int cmd_fsck(int argc, const char **argv, const char *prefix) } if (keep_cache_objects) { + verify_index_checksum = 1; read_cache(); for (i = 0; i < active_nr; i++) { unsigned int mode; |