Cygwin X11 Server slow performance

Yaakov Selkowitz
Mon Apr 30 02:59:00 GMT 2018

On 2018-04-29 21:52, Paul Sheer wrote:

> I am trying to use the Cygwin X11 Server on Windows 64-bit as follows:
>       C:\cygwin64\bin>XWin.exe -ac -listen tcp
> (Note this is on a private LAN without Internet access.)
> The X Server renders perfectly well and my favorite applications do
> start up and run.
> However performance is extremely slow -- it is slightly too slow to be usable.
> For instance I tried some graphical text editors, and a [PageDown]
> press take 0.25 seconds to render: Whereas on a commercial X Server
> running side-by-side on the same Windows desktop renders in <0.03
> seconds.
> I am a bit confused if this is intended this way: i.e. is this just a
> demonstration of the capabilities of CygWin, or is it actually being
> used by anyone?  I ask because there are no reports of anyone finding
> the X Server slow, yet the software has been many years in release.

Cygwin/X is most definitely being used, and this might help:


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