Hi,

fwiw I use Squeak on a remote server with only ssh and 8888 open.

I tunnel TightVNC through Putty to the RFB client.

Using ZRLE and 256 colours this is barely usable for administrative 
tasks through a GPRS connection in a rural area with many users sharing 
the GPRS bandwidth.

Through a UMTS connection it's just fine except for the uglyness and 
through DSL its fine in full colour.

According to top Squeak generates around 5% CPU load in these cases.

Cheers

Herbert

Am 11.11.2013 18:53, schrieb Levente Uzonyi:
> On Mon, 11 Nov 2013, Chris Muller wrote:
>
>> Levente, I'm glad you posted about xpra, because I've been meaning to
>> try it out as well as Squeak's RFB.
>>
>> I would like to ask you (and others here of course!) about options for
>> remote image operation, and try to understand the differences between
>> them.  By my understanding, we have 1) VNC, 2) Squeak RFB and 3) xpra.
>
> We use Squeak's RFB and xpra at the same time. xpra is less 
> responsive, so we use it only if RFB doesn't work for some reason 
> (e.g.: pressing Alt+. is likely to interrupt the RFB process, which 
> can be fixed using xpra).
>
>>
>> (VNC desktop) Sharing entire desktops on my LAN is handy for accessing
>> multiple running images on another machine all at once.  The downside
>> is that it's single-user, since anyone else trying to use the desktop
>> will be disrupted.
>>
>> (VNC display :1) Sharing an alternate display by starting xtightvnc on
>> the server, starting Squeak vm with the -display :1 argument, one can
>> then use remote viewing tools like Remmina to reconnect to that
>> running Squeak image.
>>
>> (xpra) This is for sharing a single program at a time.  You can start
>
> You can run multiple programs on the server using the same display.
>
>> an image on a particular display.  This seems similar to above except
>> it can run across ssh rather than having to share a VNC password..?
>> One thing I was wondering was whether the Squeak vm could be started
>> with the -display arg like above or only that strange way you said:
>> $DISPLAY=:100 squeak -vm-sound-null squeaksource.image..?
>
> The main advantages over VNC are:
> - all windows will appear on your desktop, not in a separate window
> - supports shared sessions (only the newer versions)
> - lightweight
>
>>
>> (Squeak RFB) From Ian, my understanding is this uses the image itself
>> to send its graphics over the network for remote op.  Might slow down
>> the image but the advantage here could be if you're on a machine on
>> which you cannot install and/or run remote viewing software..?
>
> Squeak's RFB is the most responsive among these three options, because 
> it knows exactly what has changed on the screen. If the remote server 
> is not too far away from you, then this will feel like you're working 
> with an image on your machine. It requires way less resources than 
> you'd expect.
>
> We use the following hack to make Squeak display the mouse pointer:
> ActiveHand userInitials: ' ' andPicture: nil.
>
>
> Levente
>