Performance problems with emacs-X11 in current cygwin.

K Stahl
Thu May 24 14:51:00 GMT 2012

I can confirm that same issue is present with GVim on a Windows XP
machine.  The issue occurred after the last update (Gnome Libraries I

On Thu, May 24, 2012 at 8:51 AM, Ken Brown <> wrote:
> On 5/24/2012 8:32 AM, Berglund Magnus (SE) wrote:
>> After an cygwin-upgrade this morning I'm experiencing performance problems
>> with emacs-X11 (23.4.2). The performance problem seem to be graphics
>> related. Window redraw is really slow, it can take up to a couple of seconds
>> to redraw the emacs window. Scrolling the cursor up or down in emacs is also
>> painfully slow. Some other X programs I've tried does not seem to be
>> affected. xemacs works just fine.
>> I've tried a fresh cygwin install on a clean (vmware) machine running
>> Windows XP. Still the same problem.
>> I also tried downgrading both emacs (23.3-3) and xorg-server(1.12.0-5)
>> without luck. There was a bunch of other packages upgrade at the same time,
>> I've included the part of the setup.log which installed the packages that
>> introduced the performance problem.
> I've noticed the same thing on my XP system but not on Windows 7.  There
> have been similar reports from two other users, but they didn't say what
> version of Windows they were using:
> I'm afraid I don't have a clue what could be causing this or why it
> apparently only occurs on XP.
> Ken Brown
> Cygwin's emacs maintainer
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