Package: emacs;
Reported by: Gregor Zattler <grfz <at> gmx.de>
Date: Sat, 31 May 2014 00:19:02 UTC
Severity: normal
Merged with 17607
Found in version 24.4.50
Done: Stefan Monnier <monnier <at> iro.umontreal.ca>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Gregor Zattler <grfz <at> gmx.de> To: 17648 <at> debbugs.gnu.org Subject: bug#17648: 24.4.50; regression: emacsclient under screen (1) slow for some values of TERM Date: Sat, 31 May 2014 02:18:00 +0200
Dear emacs developers,
under screen with emacs from repo
emacsclient -t <some-filename>
almost instantaneously shows the scratch buffer (or some other
last used buffer), then for 2 secs nothing happens, then the
window shows the buffer which corresponds to some-file-name and
one is able to work with it.
This happens for some values of TERM.
recipe:
emacs-snapshot -Q --daemon
now do
/usr/bin/time screen -m -c /dev/null -T $TERMINALNAME sh -c "emacsclient.emacs-snapshot -n -t /tmp/emacsslow/AA${RANDOM}${RANDOM}BB ; emacsclient.emacs-snapshot --eval '(server-edit)'"
for different values of TERMINALNAME
Here is a sorted list of elapsed times for terminfo definitions
from my debian testing system (the elapsed times in this list are
the median of 11 rounds with each terminfo definiton):
0:00.05elapsed screen2
0:00.05elapsed screen3
0:00.05elapsed screen.Eterm
0:00.05elapsed screen.gnome
0:00.05elapsed screen.konsole
0:00.05elapsed screen.linux
0:00.05elapsed screen.mlterm
0:00.05elapsed screen.mrxvt
0:00.05elapsed screen.rxvt
0:00.05elapsed screen.teraterm
0:00.05elapsed screen.vte
0:00.05elapsed screen.xterm-new
0:00.05elapsed screen.xterm-r6
some of them are *much* slower:
0:02.06elapsed screen-16color
0:02.07elapsed screen-16color-bce
0:02.07elapsed screen-16color-s
0:02.07elapsed screen-bce.Eterm
0:02.07elapsed screen-bce.gnome
0:02.07elapsed screen-bce.konsole
0:02.07elapsed screen-bce.linux
0:02.07elapsed screen-bce.mlterm
0:02.07elapsed screen-bce.mrxvt
0:02.07elapsed screen-bce.rxvt
0:02.08elapsed screen-256color-s
0:02.09elapsed screen-256c-bce-s --> screen-256color-bce-s
Sadly I use the last one, which is a link to the actual terminfo
file since screen (1) does not accept TERM values with a length
of more then 20 characters.
I did the same timing tests with emacs24 as packaged for debian
testing:
0:00.02elapsed screen3
0:00.02elapsed screen.mrxvt
0:00.03elapsed screen-16color
0:00.03elapsed screen-16color-bce
0:00.03elapsed screen-16color-s
0:00.03elapsed screen2
0:00.03elapsed screen-bce.Eterm
0:00.03elapsed screen-bce.gnome
0:00.03elapsed screen-bce.konsole
0:00.03elapsed screen-bce.linux
0:00.03elapsed screen-bce.mlterm
0:00.03elapsed screen-bce.mrxvt
0:00.03elapsed screen-bce.rxvt
0:00.03elapsed screen.gnome
0:00.03elapsed screen.konsole
0:00.03elapsed screen.linux
0:00.03elapsed screen.mlterm
0:00.03elapsed screen.rxvt
0:00.03elapsed screen.teraterm
0:00.03elapsed screen.vte
0:00.03elapsed screen.xterm-new
0:00.04elapsed screen-256c-bce-s
0:00.04elapsed screen-256color-s
0:00.04elapsed screen.xterm-r6
0:00.10elapsed screen.Eterm
There is no such 2 secs delay.
I did a git bisect on the repo and this produced:
6607a79c6e7c7554059557c0db78c26c57314f24 is the first bad commit
commit 6607a79c6e7c7554059557c0db78c26c57314f24
Author: Daniel Colascione <dancol <at> dancol.org>
Date: Thu Apr 17 00:54:23 2014 -0700
2014-04-17 Daniel Colascione <dancol <at> dancol.org>
Add support for bracketed paste mode; add infrastructure for
managing terminal mode enabling and disabling automatically.
* xt-mouse.el:
(xterm-mouse-mode): Simplify.
(xterm-mouse-tracking-enable-sequence)
(xterm-mouse-tracking-disable-sequence): New constants.
(turn-on-xterm-mouse-tracking-on-terminal)
(turn-off-xterm-mouse-tracking-on-terminal): Use
tty-mode-set-strings and tty-mode-reset-strings terminal
parameters instead of random hooks.
(turn-on-xterm-mouse-tracking)
(turn-off-xterm-mouse-tracking): Delete.
* term/xterm.el (xterm-extra-capabilities): Fix bitrotted comment.
(xterm-paste-ending-sequence): New constant.
(xterm-paste): New command used for bracketed paste support.
(xterm-modify-other-keys-terminal-list): Delete obsolete variable.
(terminal-init-xterm-bracketed-paste-mode): New function.
(terminal-init-xterm): Call it.
(terminal-init-xterm-modify-other-keys): Use tty-mode-set-strings
and tty-mode-reset-strings instead of random hooks.
(xterm-turn-on-modify-other-keys)
(xterm-turn-off-modify-other-keys)
(xterm-remove-modify-other-keys): Delete obsolete functions.
* term/screen.el: Rewrite to just use the xterm code. Add
copyright notice. Mention tmux.
:040000 040000 35e7957f61e4d66ebd209cd1c4e866a28d4b2530 ab84f10010ef069579268a06a8cb87297a99222f M doc
:040000 040000 6e356fc3442cded91abe85539d87c010a5b55b74 97ed2cb729e1981da13e3087f31ca1d889d207f5 M etc
:040000 040000 1f0fa9c7b097af1630c809920c763294996bc9e1 e2cb31100399d2a62f34c29014f588c097033f8d M lisp
:040000 040000 502e344d50623e95ecd35483334810ab76f9f5da f2e77d45d90ad1964f395e75cbd318ee01e4b7a3 M src
bisect run success
0 grfz <at> boo:~/src/emacs$ git bisect log
git bisect start
# bad: [70ae6e9f3ca829e4a22290a8f2434343e2f0e127] * admin/notes/changelogs: Mention `quoting'.
git bisect bad 70ae6e9f3ca829e4a22290a8f2434343e2f0e127
# good: [87cc4be37367f4039a1fb6bda8ba681bb279475f] Bump version to 24.3.91
git bisect good 87cc4be37367f4039a1fb6bda8ba681bb279475f
# bad: [83e103c61b9d775709624a44e7ed5b20ba44847d] Improve Scheme font-locking for (define ((foo ...) ...) ...).
git bisect bad 83e103c61b9d775709624a44e7ed5b20ba44847d
# good: [5910501252ec0067857e36c1d73e7b522d83b861] * emacs-lisp/eldoc.el (eldoc-print-current-symbol-info): Refactor out eldoc-documentation-function-default.
(eldoc-documentation-function-default): New function. (eldoc-documentation-function): Change value.
git bisect good 5910501252ec0067857e36c1d73e7b522d83b861
# good: [f0f301dd19212bf133aacd7fd592e126958309d8] Merge from emacs-24; up to r116940
git bisect good f0f301dd19212bf133aacd7fd592e126958309d8
# bad: [069e400fbf7d0e404438a922c9f5839b1d4902da] Tweak documentation for previous change
git bisect bad 069e400fbf7d0e404438a922c9f5839b1d4902da
# good: [6f100a7a58857ce2838a11eec596073837ba7858] Remove DATA_SEG_BITS.
git bisect good 6f100a7a58857ce2838a11eec596073837ba7858
# good: [085874f070af05df7a80b8e10cb5f88696bd685e] * GNUmakefile: Speed up 'make bootstrap' in fresh checkout.
git bisect good 085874f070af05df7a80b8e10cb5f88696bd685e
# bad: [ed507155bec59e1dd1844b4593d75aec1906b594] Merge from emacs-24; up to r116982
git bisect bad ed507155bec59e1dd1844b4593d75aec1906b594
# bad: [5c1915d10b3716879785fe49f5cfe20beeb37090] * term.c (tty_send_additional_strings): No need to fflush here,
git bisect bad 5c1915d10b3716879785fe49f5cfe20beeb37090
# bad: [6607a79c6e7c7554059557c0db78c26c57314f24] 2014-04-17 Daniel Colascione <dancol <at> dancol.org>
git bisect bad 6607a79c6e7c7554059557c0db78c26c57314f24
# first bad commit: [6607a79c6e7c7554059557c0db78c26c57314f24] 2014-04-17 Daniel Colascione <dancol <at> dancol.org>
I have no idea if or how this is related to the problem at hand,
but screen.el was changed, therefore I hope this info helps.
I wished, emacsclient would open files be fast again.
I would be happy to answer questions or do some testing
if someone provides me with instruction.
Thanks for your attention, Gregor
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