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Date: Wed, 18 Aug 2010 16:35:01 -0500
From: Jeremy Bopp <jeremy AT bopp DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: X-forwarding very very slow
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On 8/18/2010 11:55 AM, Csaba Raduly wrote:
> On Wed, Aug 18, 2010 at 5:43 PM, Alberto Canestrelli wrote:
>> Hi,
>> I have a problem with Cygwin. I am connecting from USA by ssh to the Hector
>> supermachine in Edinburgh ( I write "startx" in Cygwin and then I use  "ssh
>> -Y  v1acanes AT login DOT hector DOT ac DOT uk" ). Everything works fine, the only problem
>> is that the forwarding of the windows is very very slow.
> 
> Hi Alberto,
> It would be useful if you could try a non-Cygwin X server (e.g. a
> Linux or Solaris workstation). If X from under Linux appears fast,
> then the slowdown could be between your network card and display
> (probably Cygwin's fault). If X from Linux is also slow, the problem
> may be with the propagation of the X protocol between your network
> card and Hector (probably not Cygwin's fault) .

You could also try enabling compression with -C.  I have found this to
be a necessity when connecting with X over ssh between work and home
even though the locations are quite near each other and plain text based
ssh access runs fine without the compression.

-Jeremy

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