On Mon, Jun 30, 2014 at 11:10 PM, Michael Torrie <torr...@gmail.com> wrote:
> Only the most primitive X11 apps are at all fast over network
> forwarding.  If the app uses any modern toolkit, then it's basically
> just sending a bunch of bitmaps over the wire (changes), which would be
> fine, but X11 involves a lot of server round trips.  Forwarding works
> fine over SSH on a LAN (compression with -X helps too), but anything
> slower than that is very nearly unusable.  I used to run XEmacs over a
> modem (I know; I just preferred it to Emacs and I didn't know ViM), and
> it worked great with server-side drawing and fonts, as X11 was designed
> to do 90s-style.  But now if I need to run X11 apps over a slower link
> these days I use OpenNX which dramatically helps by eliminating round
> trips, and applying bitmap compression.  But the fact remains X11 kind
> of sucks these days, and "network transparency" now basically means a
> slightly suckier version of VNC in effect.  RDP protocol is actually
> much more efficient than X11 forwarding with modern apps.  So your
> rdesktop example is actually not a horribly inefficient X11 connection,
> other than the fact that X11 is inefficient.  Honestly once Wayland has
> per-app RDP built into it, there'll be no reason at all to cheer for X11.

Hmm. I'm not sure that it's necessarily that bad; I've done 3G-based
X11 forwarding fairly successfully on occasion. Yes, it's potentially
quite slow, but it certainly works - I've used SciTE, for instance,
and I've used some GTK2 apps without problems. What do you mean by
"modern toolkit"?


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