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From Mark Phippard <>
Subject Re: Bug in Subversion regarding file attributes
Date Sun, 21 Aug 2011 15:52:12 GMT
On Sun, Aug 21, 2011 at 11:03 AM, David Weintraub <> wrote:

> What Subversion does is look at the timestamp of the file and the
> contents of the .svn directory that contains the file information. If
> the timestamp has been touched, it is compared against the base to see
> if there was an actual change. If you modify a file's property, it
> changes an internal file in the .svn directory and Subversion picks up
> that timestamp change.

Just a point of clarification.  Subversion looks at two things to determine
if a file has changed.

1. The timestamp
2. The size

If the file size has changed, then SVN considers the file modified.  If the
file timestamp has changed, then SVN does a byte for byte comparison with
the pristine version of the file to determine if it has changed.

A good way to make SVN really slow is to run touch on your entire working
copy. That forces SVN to have to do a compare on every single file to see if
it has been modifed.  svn cleanup will repair the internal timestamps.


Mark Phippard

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