A question about rsync's behaviour

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi to all Debian users.

I wish to know why rsync behaves in two different ways when working between two
pcs connected by ethernet cable and, instead, when copying files from a pc to a
pendrive.  Here's the output in the former case:

$ rsync -vrtul --delete Mail News 192.168.0.2:/home/rodolfo
rodolfo@192.168.0.2's password:
building file list ... done

sent 75797 bytes  received 20 bytes  16848.22 bytes/sec
total size is 27753551  speedup is 366.06


and in the second:


$ rsync -vrtul --delete Mail News /mnt/pendrive2
building file list ... done
Mail/comp.emacs/
Mail/comp.emacs/324
Mail/comp.emacs/325
Mail/comp.emacs/326
Mail/comp.emacs/327
Mail/comp.emacs/328
Mail/comp.emacs/329
Mail/comp.emacs/330
Mail/comp.emacs/331
Mail/comp.emacs/332
Mail/comp.emacs/333
Mail/comp.emacs/334
Mail/comp.emacs/335
Mail/comp.emacs/336

[...]

News/drafts/drafts/21
News/drafts/queue/
News/marks/
News/marks/freenews.netfront.net-ephemeral/
News/marks/news.gmane.org-ephemeral/gmane.linux.debian.user/
News/marks/news.gmane.org-ephemeral/gmane.linux.debian.user/.marks
News/marks/news.gmane.org/
News/marks/news.gmane.org/gmane.linux.debian.user/
News/marks/news.gmane.org/gmane.linux.debian.user/.marks
News/marks/news.gnus.org-ephemeral/
News/marks/news.readfreenews.net-ephemeral/

sent 7616774 bytes  received 30996 bytes  728359.05 bytes/sec
total size is 27753551  speedup is 3.63


The second output contain about 1,500 lines!, and the first only 5!

Can anybody explain why this difference, and how to make rsync behave with the
pendrive the same as with ethernet cable?

Thanks for any help
Rodolfo