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From: zhang cc <ccsmile2008@outlook.com>
To: "emacs-devel@gnu.org" <emacs-devel@gnu.org>
Subject: Emacs-26.0.91: switch-to-buffer-other-window runs too slowly (about 0.1s)
Date: Mon, 26 Mar 2018 10:12:33 +0000	[thread overview]
Message-ID: <SG2PR0601MB1405794DAA49E9306E411BE7A8AD0@SG2PR0601MB1405.apcprd06.prod.outlook.com> (raw)

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1. start emacs with “emacs -Q”
2. eval the following form:
(progn
  (setq ddd-tm (current-time))
  (switch-to-buffer-other-window "*Messages*")
  (message "ddd: %ss"  (float-time (time-subtract (current-time) ddd-tm))))

The result is lager than 0.1s on my machine. This makes undo-tree running too slowly, because it calls switch-to-buffer-other-window twice per undo.

The emacs 25 has no such problem.

OS: Centos 7.4 x86_64
Emacs: 26.0.91
GTK version: 2.24.31


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             reply	other threads:[~2018-03-26 10:12 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-26 10:12 zhang cc [this message]
2018-03-26 15:16 ` Emacs-26.0.91: switch-to-buffer-other-window runs too slowly (about 0.1s) Eli Zaretskii
2018-03-26 15:22   ` zhang cc
     [not found]   ` <544b8346-bda9-45eb-9573-1d51d9f768b2@Spark>
2018-03-26 15:25     ` zhang cc
2018-03-26 15:30       ` Eli Zaretskii
2018-03-26 16:09         ` Robert Pluim
2018-03-26 16:29           ` Clément Pit-Claudel
2018-03-26 16:34           ` Robert Pluim
2018-03-26 16:37             ` Noam Postavsky
2018-03-26 16:59               ` Robert Pluim
2018-03-26 17:28                 ` Eli Zaretskii
2018-03-26 17:49                   ` Stefan Monnier
2018-03-26 18:17                     ` Eli Zaretskii
2018-03-26 18:26                       ` Stefan Monnier
2018-03-26 18:33                         ` Eli Zaretskii
2018-03-26 18:41                           ` Stefan Monnier
2018-03-26 18:46                         ` martin rudalics
2018-03-26 18:58                           ` Eli Zaretskii
2018-03-26 19:16                             ` martin rudalics
2018-03-26 19:24                               ` Eli Zaretskii
2018-03-26 21:41                                 ` martin rudalics
2018-03-27  2:50                                   ` Eli Zaretskii
2018-03-27  7:23                                     ` martin rudalics
2018-03-29  9:37                                       ` Eli Zaretskii
2018-03-29 23:15                                         ` Noam Postavsky
2018-03-29 23:20                                           ` Noam Postavsky
2018-03-30  7:51                                           ` Eli Zaretskii
2018-03-26 20:09                           ` Stefan Monnier
2018-03-26 21:42                             ` martin rudalics
2018-03-27  2:45                             ` Eli Zaretskii
2018-03-27  3:41                               ` Stefan Monnier
2018-03-27  7:23                                 ` martin rudalics
2018-03-27 12:00                                   ` Stefan Monnier
2018-03-29  8:58                                 ` Eli Zaretskii
2018-03-26 18:46                     ` martin rudalics

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