GNU bug report logs - #45379
28.0.50; Degraded Performance of describe-buffer-bindings

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Package: emacs; Reported by: styang@HIDDEN; Keywords: confirmed; dated Wed, 23 Dec 2020 06:03:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

Message received at 45379 <at> debbugs.gnu.org:


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Subject: Re: 28.0.50; Degraded Performance of describe-buffer-bindings
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"Sheng Yang" <styang@HIDDEN> writes:

> Hi Juri,
>
> I recently came across a regression of performance in Emacs for
> describe bindings, which I have reported as bug#45379. After
> bisection, the offending seems to be a commit a649034336 you pushed in
> November 2020, to fix bug#5423. [...]
>
> a649034336 * bad Don't show key ranges if shadowed by different commands

BTW, the offending commit is not Juri's.  It is mine:

    Author: Stefan Kangas <stefan@HIDDEN>
    Date:   Fri Nov 13 15:28:29 2020 +0100

        Don't show key ranges if shadowed by different commands

Thanks for the bug report!




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#45379; Package emacs. Full text available.
Added tag(s) confirmed. Request was from Stefan Kangas <stefan@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 45379 <at> debbugs.gnu.org:


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Subject: Re: 28.0.50; Degraded Performance of describe-buffer-bindings
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"Sheng Yang" <styang@HIDDEN> writes:

> Since I have received no reply after bug#45379 was reported (more than
> 2 weeks), I guess it's better to contact you and cc every participants
> of bug#5423.

Thanks for the ping.  I am working on a fix that I'm hoping to find the
time to finish up soon, possibly already this weekend.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#45379; Package emacs. Full text available.

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Subject: Re: 28.0.50; Degraded Performance of describe-buffer-bindings
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--68704380d348437199d88f5a9068e7db
Content-Type: text/plain;charset=utf-8
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Hi Juri,

I recently came across a regression of performance in Emacs for describe=
 bindings, which I have reported as bug#45379. After bisection, the offe=
nding seems to be a commit a649034336 you pushed in November 2020, to fi=
x bug#5423. Since I have received no reply after bug#45379 was reported =
(more than 2 weeks), I guess it's better to contact you and cc every par=
ticipants of bug#5423. I am including the description of the bug report =
here for your convenience.

> `describe-buffer-bindings` has become significantly slower since the
following commit

a649034336 * bad Don't show key ranges if shadowed by different commands=


This also makes `describe-bindings` and anything depending on it hardly
usable. For me, it takes about 2 seconds on vanilla Emacs in an org-mode=

buffer, and a few minutes on my Emacs configuration (was almost instant
before the offending commit).
>=20

Sheng Yang(=E6=9D=A8=E5=9C=A3), PhD candidate
Computer Science Department
University of Maryland, College Park
E-mail: styang@HIDDEN
E-mail (old but still used): yangsheng6810@HIDDEN


--68704380d348437199d88f5a9068e7db
Content-Type: text/html;charset=utf-8
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div>Hi Juri,<br></d=
iv><div><br></div><div>I recently came across a regression of performanc=
e in Emacs for describe bindings, which I have reported as bug#45379. Af=
ter bisection, the offending seems to be a commit a649034336 you pushed =
in November 2020, to fix bug#5423. Since I have received no reply after =
bug#45379 was reported (more than 2 weeks), I guess it's better to conta=
ct you and cc every participants of bug#5423. I am including the descrip=
tion of the bug report here for your convenience.<br></div><div><br></di=
v><blockquote type=3D"cite"><pre class=3D"message">`describe-buffer-bind=
ings` has become significantly slower since the
following commit

a649034336 * bad Don't show key ranges if shadowed by different commands=


This also makes `describe-bindings` and anything depending on it hardly
usable. For me, it takes about 2 seconds on vanilla Emacs in an org-mode=

buffer, and a few minutes on my Emacs configuration (was almost instant
before the offending commit).<br></pre><div><br></div></blockquote><div>=
<br></div><div id=3D"sig97546008"><div class=3D"signature">Sheng Yang(=E6=
=9D=A8=E5=9C=A3), PhD candidate<br></div><div class=3D"signature">Comput=
er Science Department<br></div><div class=3D"signature">University of Ma=
ryland, College Park<br></div><div class=3D"signature">E-mail: <a href=3D=
"mailto:styang@HIDDEN">styang@HIDDEN</a><br></div><div class=
=3D"signature">E-mail (old but still used): <a href=3D"mailto:yangsheng6=
810@HIDDEN">yangsheng6810@HIDDEN</a><br></div><div class=3D"signat=
ure"><br></div></div><div><br></div></body></html>
--68704380d348437199d88f5a9068e7db--




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#45379; Package emacs. Full text available.

Message received at submit <at> debbugs.gnu.org:


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From: styang@HIDDEN
To: bug-gnu-emacs@HIDDEN
Subject: 28.0.50; Degraded Performance of describe-buffer-bindings
Date: Wed, 23 Dec 2020 00:01:53 -0600
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`describe-buffer-bindings` has become significantly slower since the
following commit

a649034336 * bad Don't show key ranges if shadowed by different commands

This also makes `describe-bindings` and anything depending on it hardly
usable. For me, it takes about 2 seconds on vanilla Emacs in an org-mode
buffer, and a few minutes on my Emacs configuration (was almost instant
before the offending commit).

--=20
Sheng Yang(=E6=9D=A8=E5=9C=A3), PhD student
Computer Science Department
University of Maryland, College Park
E-mail: styang@HIDDEN
E-mail(old): yangsheng6810@HIDDEN




Acknowledgement sent to styang@HIDDEN:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#45379; Package emacs. Full text available.
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