Re: slow X11 frame creation and refresh after occlusion

[Greg Klanderman <gak@klanderman.net>]

Thanks Robert, no time yet for much investigation on my side, but I
can answer your followup questions quickly..

>>>>> On January 27, 2021 Robert Pluim <rpluim@gmail.com> wrote:

> Other things to check:

> - which font backend are you using? (frame-parameter nil
>   'font-backend) will tell you

(frame-parameter nil 'font-backend)
(xfthb x)

any suggestions for settings I can try?

> - which version of emacs? emacs-master has a change to reduce the
>   number of fonts it probes, which is always a killer over a forwarded
>   X connection

didn't find it searching 'git log' a bit can you point me to it?

I assume not in this one:

(emacs-version)
"GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2020-12-21, modified by Debian"

system-configuration-options
"--build x86_64-linux-gnu
--prefix=/usr
--sharedstatedir=/var/lib
--libexecdir=/usr/lib
--localstatedir=/var/lib
--infodir=/usr/share/info
--mandir=/usr/share/man
--enable-libsystemd
--with-pop=yes
--enable-locallisppath=/etc/emacs:/usr/local/share/emacs/27.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/27.1/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa
--without-gconf
--with-mailutils
--build x86_64-linux-gnu
--prefix=/usr
--sharedstatedir=/var/lib
--libexecdir=/usr/lib
--localstatedir=/var/lib
--infodir=/usr/share/info
--mandir=/usr/share/man
--enable-libsystemd
--with-pop=yes
--enable-locallisppath=/etc/emacs:/usr/local/share/emacs/27.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/27.1/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa
--without-gconf
--with-mailutils
--with-x=yes
--with-x-toolkit=lucid
--with-toolkit-scroll-bars
--without-gsettings
'CFLAGS=-g -O2 -fdebug-prefix-map=/build/emacs-uC3JdZ/emacs-27.1+1=. -fstack-protector-strong -Wformat -Werror=format-security -Wall'
'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2'
LDFLAGS=-Wl,-z,relro"

yikes, typing M-x replace-string RET the first time takes 30 sec
before prompting "Replace string: " in the minibuffer!  Again over
ssh-forwarded X11 (but only one hop, from work to home).

Greg