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Re: Performance problems with emacs-X11 in current cygwin


On 2012-06-10 19:45, Ken Brown wrote:
The bisection shows that the first problematic commit is this one:

http://git.gnome.org/browse/glib/commit/?h=glib-2-32&id=7eae486179e2799c369ed9ffcea663bf9161ce79


Author: Ryan Lortie <desrt@desrt.ca> Date: Wed Aug 31 22:07:02 2011 -0400

GMain: simplify logic for g_wakeup_acknowledge()

Instead of messing around with context->poll_waiting, just look at the
GPollFD to see if the GWakeup needs to be acknowledged.

In case anyone else wants to confirm this, you can get my glib builds by
running

setup.exe -K http://sanibeltranquility.com/cygwin/kbrown.gpg

and adding http://sanibeltranquility.com/cygwin to the list of mirrors.
The problematic version is

libglib2.0_0-2.30.90_7eae4861-1

and the preceding version (without the problem) is

libglib2.0_0-2.30.90_87880df-1

I've tested the latter with emacs-23, emacs-24, and gvim.

Thanks for doing this. Is this still only a problem with XP? If so, it is most likely a bug in Cygwin itself.



Yaakov


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