From: Brian Tao <rdesktop@ri...> - 2003-01-25 19:44:43
Is anyone else experiencing a significant loss of screen update
performance running 1.1 or 1.2b1 compared to 1.0? I don't have any
quantitative measures, but scrolling a browser window or waiting for
screen refreshes in SecureCRT are all noticeably slower with 1.1 and
later. For example, if I flip between screens in SecureCRT (using the
"screen" tty session manager utility), with rdesktop 1.0, the refresh
is nearly instantaneous. With 1.1 and 1.2b1, however, it takes maybe
a quarter second for the text on the screen to redraw, top to bottom.
I am running over a DSL connection (3 Mbps down, 768 kbps up) with
the client on the downstream side. I am connecting to a remote server
over an SSH tunnel (I authenticate through a firewall first, then
create a port 3389 tunnel back to the machine running the rdesktop
client). RDP client OS is FreeBSD 4.7-stable, RDP server OS is
I can run the 1.0 rdesktop client side by side with 1.1 or 1.2b1
and the difference is very apparent. Same SSH tunnel, same remote
server, etc. It is almost as if the newer clients have the -b (force
bitmap update) option forced on. I've gone back to using the 1.0
client, but it lacks the Ctrl-Alt-Pause/Ctrl-Alt-Enter toggle that I
find very useful.
I won't have an opportunity to try my tests without an SSH tunnel
in the middle until sometime next week, but as I said, performance
under the exact same conditions with the 1.0 client is very snappy.
Brian Tao (BT300, rdesktop@...)
"Though this be madness, yet there is method in't"