GNU bug report logs - #37000
27.0.50; gc and laggy Emacs

Previous Next

Full log

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Alex Branham <alex.branham <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; gc and laggy Emacs
Date: Sat, 10 Aug 2019 11:27:29 -0500

Hello -

Recently I've noticed Emacs sometimes getting _very_ laggy, as in 
taking up to a half-second to display the a single character that 
I type. M-x profiler-start suggests that garbage-collection is 
taking up too much time (see below my signature for example 
output). gc-cons-percentage and gc-cons-threshold are at their 
default values. I can't figure out how to reproduce this reliably, 
but running M-x relint-directory on the Emacs source tree seems to 
do a decent job triggering it. My Emacs is built from commit 
4ce9c6d0b58bd77bc811d6c1c5caf955a5a0be2f (~ 4 days ago) of the 
master branch. How can I go about tracking this down?

Thanks,
Alex

- ... 
 51442  74%
  Automatic GC 
  51440  74%
+ winum-select-window-1 
1   0%
+ #<compiled 0x443aa1> 
1   0%
+ command-execute 
11973  17%
+ timer-event-handler 
4837   6%
+ flyspell-post-command-hook 
536   0%
+ redisplay_internal (C function) 
262   0%
+ xcb:-connection-filter 
60   0%
+ internal-timer-start-idle 
38   0%
 mu4e~proc-filter 
 11   0%
+ winner-save-old-configurations 
6   0%
+ eldoc-pre-command-refresh-echo-area 
4   0%
+ #<compiled 0x1ffab289c50b> 
3   0%
+ undo-auto--add-boundary 
1   0%
 exwm-layout--on-echo-area-change 
 1   0%
+ mu4e~update-sentinel-func 
1   0%
+ gui-set-selection 
1   0%
+ #<compiled 0x10b7815> 
1   0%



In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 
3.24.10)
Windowing system distributor 'The X.Org Foundation', version 
11.0.12004000
System Description: NixOS 19.03.173251.56d94c8c69f (Koi)

Configured using:
'configure
--prefix=/nix/store/zwkzz533szjmra431czdyr39hibfzxni-emacs-27.0.50
--disable-build-details --with-modules --with-x-toolkit=gtk3 
--with-xft
CFLAGS=-DMAC_OS_X_VERSION_MAX_ALLOWED=101200'
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS GLIB NOTIFY 
INOTIFY
LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT 
ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD 
JSON
PDUMPER GMP
Important settings:
 value of $LANG: en_US.UTF-8
 locale-coding-system: utf-8-unix

Memory information:
((conses 16 678039 134311)
(symbols 48 88978 26)
(strings 32 245611 6884)
(string-bytes 1 7634214)
(vectors 16 142349)
(vector-slots 8 3015732 58606)
(floats 8 741 448)
(intervals 56 9225 1373)
(buffers 992 1263))

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.