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Diffstat (limited to 'Documentation/technical/racy-git.txt')
| -rw-r--r-- | Documentation/technical/racy-git.txt | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/Documentation/technical/racy-git.txt b/Documentation/technical/racy-git.txt index 6bdf034b3a..53aa0c82c2 100644 --- a/Documentation/technical/racy-git.txt +++ b/Documentation/technical/racy-git.txt @@ -42,10 +42,12 @@ compared, but this is not enabled by default because this member is not stable on network filesystems. With `USE_NSEC` compile-time option, `st_mtim.tv_nsec` and `st_ctim.tv_nsec` members are also compared, but this is not enabled by default -because the value of this member becomes meaningless once the -inode is evicted from the inode cache on filesystems that do not -store it on disk. - +because in-core timestamps can have finer granularity than +on-disk timestamps, resulting in meaningless changes when an +inode is evicted from the inode cache. See commit 8ce13b0 +of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git +([PATCH] Sync in core time granuality with filesystems, +2005-01-04). Racy git -------- @@ -135,7 +137,7 @@ them, and give the same timestamp to the index file: This will make all index entries racily clean. The linux-2.6 project, for example, there are over 20,000 files in the working -tree. On my Athron 64X2 3800+, after the above: +tree. On my Athlon 64 X2 3800+, after the above: $ /usr/bin/time git diff-files 1.68user 0.54system 0:02.22elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k |