GNU bug report logs - #34618
26.1.92; timerfd interface causes slowdown on Cygwin

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Package: emacs;

Reported by: Ken Brown <kbrown <at> cornell.edu>

Date: Fri, 22 Feb 2019 15:10:01 UTC

Severity: normal

Found in version 26.1.92

Done: Ken Brown <kbrown <at> cornell.edu>

Bug is archived. No further changes may be made.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ken Brown <kbrown <at> cornell.edu>
Subject: bug#34618: closed (Re: bug#34618: 26.1.92; timerfd interface
 causes slowdown on Cygwin)
Date: Fri, 22 Feb 2019 16:16:02 +0000

[Message part 1 (text/plain, inline)]
Your bug report

#34618: 26.1.92; timerfd interface causes slowdown on Cygwin

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 34618 <at> debbugs.gnu.org.

-- 
34618: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34618
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]
From: Ken Brown <kbrown <at> cornell.edu>
Cc: "34618-done <at> debbugs.gnu.org" <34618-done <at> debbugs.gnu.org>
Subject: Re: bug#34618: 26.1.92; timerfd interface causes slowdown on Cygwin
Date: Fri, 22 Feb 2019 16:15:18 +0000

Closing.

[Message part 3 (message/rfc822, inline)]
From: Ken Brown <kbrown <at> cornell.edu>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 26.1.92; timerfd interface causes slowdown on Cygwin
Date: Fri, 22 Feb 2019 15:08:33 +0000

[Message part 4 (text/plain, inline)]
Starting with cygwin-3.0.0, Cygwin has the timerfd functions.  But using
them causes Emacs to be very slow to respond to user input.  If I press
a key, there is a 1-2 second delay before Emacs responds.  I'm in the
process of trying to debug this
(http://www.cygwin.org/ml/cygwin/2019-02/msg00364.html).  In the
meantime, the attached patch disables the use of these functions.

OK for the emacs-26 branch (after filling in the bug number)?

Ken

[0001-Disable-the-timerfd-interface-on-Cygwin.patch (text/plain, attachment)]
This bug report was last modified 6 years and 69 days ago.

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