Re: Tout se fait en même temps

Un peu plus d'infos sur la question dans le man :

-r, --recursive
 This tells rsync to copy directories recursively. See also
 --dirs (-d).
 Beginning with rsync 3.0.0, the recursive algorithm used
 is now an incremental scan that uses much less memory
 than before and begins the transfer after the scanning of
 the first few directories have been completed. This
 incremental scan only affects our recursion algorithm, and
 does not change a non-recursive transfer. It is also only
 possible when both ends of the transfer are at least
 version 3.0.0.
 Some options require rsync to know the full file list, so
 these options disable the incremental recursion mode.
 These include: --delete-before, --delete-after,
 --prune-empty-dirs, and --delay-updates. Because of this,
 the default delete mode when you specify --delete is now
 --delete-during when both ends of the connec‐ tion are at
 least 3.0.0 (use --del or --delete-during to request this
 improved deletion mode explicitly). See also the
 --delete-delay option that is a better choice than using
 --delete-after.
 Incremental recursion can be disabled using the
 --no-inc-recursive option or its shorter --no-i-r alias.