X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-2.0 required=5.0 tests=AWL,BAYES_00,KHOP_THREADED,SPF_NEUTRAL,TW_CG,T_RP_MATCHES_RCVD
X-Spam-Check-By:	sourceware.org
Message-ID:	<4FD5D8F2.6060300@cornell.edu>
Date:	Mon, 11 Jun 2012 07:39:30 -0400
From:	Ken Brown <kbrown AT cornell DOT edu>
User-Agent:	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: Performance problems with emacs-X11 in current cygwin
References:	<4FC7D9E6 DOT 5050609 AT alice DOT it> <4FCA1FF0 DOT 8090703 AT alice DOT it> <4FCA2CA9 DOT 7080704 AT cornell DOT edu> <4FCA634D DOT 1080206 AT cornell DOT edu> <4FCB2991 DOT 3010701 AT users DOT sourceforge DOT net> <4FCB5438 DOT 7080903 AT cornell DOT edu> <4FCB9872 DOT 5010506 AT cornell DOT edu> <loom DOT 20120606T123651-460 AT post DOT gmane DOT org> <4FD1F709 DOT 4050107 AT cornell DOT edu> <87k3zhbyyk DOT fsf AT Rainer DOT invalid> <4FD22C39 DOT 6070107 AT cornell DOT edu> <4FD53FA9 DOT 2040105 AT cornell DOT edu> <4FD55DF1 DOT 7030102 AT users DOT sourceforge DOT net>
In-Reply-To:	<4FD55DF1.7030102@users.sourceforge.net>
X-PMX-CORNELL-SPAM-CHECKED:	Pawpaw
X-Original-Sender:	kbrown AT cornell DOT edu - Mon Jun 11 07:39:33 2012
X-PMX-CORNELL-REASON:	CU_White_List_Override
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On 6/10/2012 10:54 PM, Yaakov (Cygwin/X) wrote:
> 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 AT desrt DOT 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.

It's a problem with XP but not with Windows 7.  No one has reported 
testing other systems.

Do you understand the code well enough to make a test case to help cgf 
and Corinna debug it, assuming it's a Cygwin bug?

Ken


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -