In this thread: http://svn.haxx.se/users/archive-2012-04/0211.shtml Johan points
out that 'svn status' will run a full content comparison on all files which have
a newer timestamp than the one recorded in working copy meta-data. This can lead
to performance problems if a lot of files happen to have a mismatching timestamp.
Currently, the only way to update mismatching timestamps is running 'svn
cleanup'. But it would be nicer if 'svn status' automatically fixed wrong
timestamps in meta-data. There are some issues to keep in mind here, such as
status usually only taking a read-lock rather than a write-lock (as discussed in
the aforementioned mailing list thread).