BAD-text-scale-adjust-profileDescription: Text document
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| From: | Gennady Uraltsev |
| Subject: | bug#26402: 25.2; Font rendering extremely slow on any non-default font |
| Date: | Sat, 8 Apr 2017 15:48:38 +0200 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
Font rendering in emacs is incredibly slow if any buffer-local change is made i.e. unless using 'default. I tried moving the cursor in a small (30 line) text file in emacs under X. It works perfectly, also changing the default font size with set-face-font or set-frame-font works perfectly well. On the other hand, any buffer local change of font makes everything extremely slow. These modifications include (buffer-face-set 'fixed-pitch) or text-scale-adjust The cursor gets redrawn around once every second making using emacs impossible. I am attaching the profiler logs for moving the cursor from the beginning to the end of the 30 line buffer Default run: > - command-execute 122 96% > - call-interactively 122 96% > - byte-code 88 69% > - read-extended-command 88 69% > - completing-read 88 69% > - completing-read-default 88 69% > - read-from-minibuffer 25 19% > - redisplay_internal (C function) 3 2% > - funcall 3 2% > - #<compiled 0x26fa55> 3 2% > - gui-backend-selection-exists-p 3 2% > - apply 3 2% > #<compiled 0x49fcad> 3 2% > - command-execute 2 1% > - call-interactively 2 1% > - funcall-interactively 2 1% > - previous-line-or-history-element 2 1% > - previous-history-element 2 1% > goto-history-element 2 1% > - funcall-interactively 34 26% > - execute-extended-command 33 26% > - sit-for 25 19% > - redisplay 20 15% > - redisplay_internal (C function) 4 3% > - funcall 4 3% > - #<compiled 0x26fa55> 4 3% > - gui-backend-selection-exists-p 4 3% > - apply 4 3% > #<compiled 0x49fcad> 4 3% > - command-execute 8 6% > - call-interactively 8 6% > - funcall-interactively 8 6% > - profiler-report 8 6% > - profiler-report-cpu 8 6% > profiler-cpu-profile 8 6% > - next-line 1 0% > - line-move 1 0% > - line-move-partial 1 0% > - window-screen-lines 1 0% > - window-inside-pixel-edges 1 0% > window-edges 1 0% > - ... 4 3% > Automatic GC 4 3% Run after set-frame-font: > - command-execute 100 90% > - call-interactively 100 90% > - byte-code 58 52% > - read-extended-command 58 52% > - completing-read 58 52% > + completing-read-default 58 52% > - funcall-interactively 42 37% > - execute-extended-command 36 32% > - sit-for 24 21% > - redisplay 17 15% > - redisplay_internal (C function) 2 1% > - funcall 2 1% > - #<compiled 0x26fa55> 2 1% > - gui-backend-selection-exists-p 2 1% > - apply 2 1% > #<compiled 0x49fcad> 2 1% > - command-execute 12 10% > - call-interactively 12 10% > - funcall-interactively 12 10% > - profiler-report 12 10% > - profiler-report-cpu 12 10% > profiler-cpu-profile 12 10% > - next-line 6 5% > - line-move 6 5% > line-move-visual 6 5% > - ... 10 9% > Automatic GC 10 9% > - timer-event-handler 1 0% > - apply 1 0% > jit-lock-context-fontify 1 0% BAD run after text-scale-adjust > - command-execute 2024 99% > - call-interactively 2024 99% > - funcall-interactively 1999 98% > - next-line 1965 96% > - line-move 1965 96% > - line-move-partial 1433 70% > - default-line-height 730 35% > default-font-height 730 35% > - window-screen-lines 695 34% > - default-line-height 691 33% > default-font-height 691 33% > - window-inside-pixel-edges 4 0% > window-edges 4 0% > - window-inside-pixel-edges 8 0% > - window-edges 8 0% > - window-current-scroll-bars 4 0% > frame-current-scroll-bars 4 0% > - default-line-height 524 25% > default-font-height 524 25% > line-move-visual 4 0% > - window-inside-pixel-edges 4 0% > - window-edges 4 0% > - window-current-scroll-bars 4 0% > frame-current-scroll-bars 4 0% > - execute-extended-command 34 1% > - sit-for 22 1% > redisplay 16 0% > - command-execute 12 0% > - call-interactively 12 0% > - funcall-interactively 12 0% > - profiler-report 12 0% > - profiler-report-cpu 12 0% > profiler-cpu-profile 12 0% > - byte-code 25 1% > - read-extended-command 25 1% > - completing-read 25 1% > - completing-read-default 25 1% > read-from-minibuffer 19 0% > - ... 11 0% > Automatic GC 11 0% BAD run after (buffer-set-face fixed-pitch) > command-execute 1778 99% > - call-interactively 1778 99% > - funcall-interactively 1745 97% > - next-line 1716 96% > - line-move 1716 96% > - line-move-partial 1176 65% > - default-line-height 608 34% > default-font-height 608 34% > - window-screen-lines 568 31% > - default-line-height 568 31% > default-font-height 568 31% > - default-line-height 540 30% > default-font-height 540 30% > - execute-extended-command 29 1% > - sit-for 15 0% > redisplay 12 0% > - command-execute 14 0% > - call-interactively 14 0% > - funcall-interactively 14 0% > - profiler-report 10 0% > - profiler-report-cpu 10 0% > profiler-cpu-profile 10 0% > profiler-start 4 0% > - byte-code 33 1% > - read-extended-command 33 1% > - completing-read 33 1% > - completing-read-default 33 1% > read-from-minibuffer 17 0% > - ... 8 0% > Automatic GC 8 0% In GNU Emacs 25.2.1 (x86_64-suse-linux-gnu, GTK+ Version 3.20.10) of 2017-03-27 built on lamb61 Windowing system distributor 'The X.Org Foundation', version 11.0.11803000 System Description: openSUSE Leap 42.2 Configured using: 'configure --with-pop --without-hesiod --with-kerberos --with-kerberos5 --with-xim --with-wide-int --with-file-notification=inotify --with-modules --enable-autodepend --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --localstatedir=/var --sharedstatedir=/var/lib --libexecdir=/usr/lib --enable-locallisppath=/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp --with-x --with-sound --with-xpm --with-jpeg --with-tiff --with-gif --with-png --with-rsvg --with-dbus --with-xft --without-gpm --with-x-toolkit=gtk3 --with-xwidgets --x-includes=/usr/include --x-libraries=/usr/lib64 --with-libotf --with-m17n-flt --build=x86_64-suse-linux 'CFLAGS=-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -D_GNU_SOURCE -DGDK_DISABLE_DEPRECATION_WARNINGS -DGLIB_DISABLE_DEPRECATION_WARNINGS -pipe -Wno-pointer-sign -Wno-unused-variable -Wno-unused-label -Wno-unprototyped-calls -fno-optimize-sibling-calls -fno-PIE -DSYSTEM_PURESIZE_EXTRA=55000 -DSITELOAD_PURESIZE_EXTRA=10000 ' LDFLAGS=-Wl,-O2' Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 MODULES XWIDGETS Important settings: value of $LC_CTYPE: en_US.UTF-8 value of $LC_MONETARY: de_DE.UTF-8 value of $LC_NUMERIC: POSIX value of $LC_TIME: en_GB.UTF-8 value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=local locale-coding-system: utf-8-unix Major mode: Fundamental Minor modes in effect: buffer-face-mode: t tooltip-mode: t global-eldoc-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent messages: Making completion list... [2 times] delete-backward-char: Text is read-only Making completion list... [3 times] You can run the command ‘buffer-face-set’ with M-x bu-s RET previous-line: Beginning of buffer [3 times] CPU profiler stopped CPU profiler started next-line: End of buffer Wrote /home/guraltsev/admin/bugs/emacs/font-slow/buffer-set-face-fixed-pitch C-x <up> is undefined [2 times] Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message dired format-spec rfc822 mml mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util help-fns help-mode mail-prsvr mail-utils thingatpt profiler easymenu cl-loaddefs pcase cl-lib face-remap time-date mule-util delsel lpr tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese charscript case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote dbusbind inotify dynamic-setting system-font-setting font-render-setting xwidget-internal move-toolbar gtk x-toolkit x multi-tty make-network-process emacs) Memory information: ((conses 16 121417 15744) (symbols 48 22660 0) (miscs 40 5039 157) (strings 32 23137 10436) (string-bytes 1 677307) (vectors 16 67484) (vector-slots 8 1659575 10120) (floats 8 184 184) (intervals 56 446 10) (buffers 976 24) (heap 1024 58366 8411))
BAD-text-scale-adjust-profile
Description: Text document
BAD-buffer-set-face-fixed-pitch-profile
Description: Text document
GOOD-default-profile
Description: Text document
GOOD-set-frame-font-profile
Description: Text document
signature.asc
Description: OpenPGP digital signature
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