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* bug#48910: Very slow startup of GTK+ applications
@ 2021-06-07 22:30 Leo Famulari
  2021-06-07 22:34 ` Leo Famulari
  0 siblings, 1 reply; 5+ messages in thread
From: Leo Famulari @ 2021-06-07 22:30 UTC (permalink / raw)
  To: 48910

[-- Attachment #1: Type: text/plain, Size: 2352 bytes --]

For the last couple months, I've noticed that GTK+ applications can be
very slow to start on my Guix / Debian system. It may take up to a
minute before they finish launching.

Here's an strace log of 'mousepad' startup. The pause occurs at line
3638, and then resumes after the the timeout is reached. Excerpt:

------
3621 [pid 10026] poll([{fd=7, events=POLLIN}], 1, 0) = 0 (Timeout)
3622 [pid 10026] poll([{fd=6, events=POLLIN}], 1, 0) = 1 ([{fd=6, revents=POLLIN}])
3623 [pid 10026] recvmsg(6, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\f\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3624 [pid 10026] poll([{fd=7, events=POLLIN}], 1, 0) = 0 (Timeout)
3625 [pid 10026] poll([{fd=6, events=POLLIN}], 1, 0) = 1 ([{fd=6, revents=POLLIN}])
3626 [pid 10026] recvmsg(6, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.337\0\0\5\1u\0\n\0\0\0\7\1s\0\24\0\0\0"..., iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_f     lags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3627 [pid 10026] poll([{fd=7, events=POLLIN}], 1, 0) = 0 (Timeout)
3628 [pid 10026] poll([{fd=6, events=POLLIN}], 1, 0) = 1 ([{fd=6, revents=POLLIN}])
3629 [pid 10026] recvmsg(6, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\r\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3630 [pid 10026] poll([{fd=7, events=POLLIN}], 1, 0) = 0 (Timeout)
3631 [pid 10026] poll([{fd=6, events=POLLIN}], 1, 0) = 1 ([{fd=6, revents=POLLIN}])
3632 [pid 10026] recvmsg(6, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.337\0\0\5\1u\0\v\0\0\0\7\1s\0\24\0\0\0"..., iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_f     lags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3633 [pid 10026] poll([{fd=7, events=POLLIN}], 1, 0) = 0 (Timeout)
3634 [pid 10026] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3635 [pid 10026] write(7, "\1\0\0\0\0\0\0\0", 8) = 8
3636 [pid 10026] poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}], 2, -1) = 1 ([{fd=7, revents=POLLIN}])
3637 [pid 10026] read(7, "\1\0\0\0\0\0\0\0", 16) = 8
3638 [pid 10026] poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}], 2, -1 <unfinished ...>
3639 [pid 10024] <... poll resumed> )        = 0 (Timeout)
------

[-- Attachment #2: mousepad-startup.log.xz --]
[-- Type: application/octet-stream, Size: 37904 bytes --]

^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#48910: Very slow startup of GTK+ applications
  2021-06-07 22:30 bug#48910: Very slow startup of GTK+ applications Leo Famulari
@ 2021-06-07 22:34 ` Leo Famulari
  2021-06-07 22:37   ` Leo Famulari
  0 siblings, 1 reply; 5+ messages in thread
From: Leo Famulari @ 2021-06-07 22:34 UTC (permalink / raw)
  To: 48910

[-- Attachment #1: Type: text/plain, Size: 2116 bytes --]

Here is another strace log, for gnome-calculator.

It pauses at line 3755:

------
3738 [pid 10510] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3739 [pid 10510] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3740 [pid 10510] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\n\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3741 [pid 10510] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3742 [pid 10510] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3743 [pid 10510] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.343\0\0\5\1u\0\t\0\0\0\7\1s\0\24\0\0\0"..., iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_f     lags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3744 [pid 10510] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3745 [pid 10510] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3746 [pid 10510] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\v\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3747 [pid 10510] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3748 [pid 10510] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3749 [pid 10510] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.343\0\0\5\1u\0\n\0\0\0\7\1s\0\24\0\0\0"..., iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_f     lags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3750 [pid 10510] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3751 [pid 10510] poll([{fd=5, events=POLLIN}], 1, 0) = 0 (Timeout)
3752 [pid 10510] write(6, "\1\0\0\0\0\0\0\0", 8) = 8
3753 [pid 10510] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}], 2, -1) = 1 ([{fd=6, revents=POLLIN}])
3754 [pid 10510] read(6, "\1\0\0\0\0\0\0\0", 16) = 8
3755 [pid 10510] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}], 2, -1 <unfinished ...>
3756 [pid 10508] <... poll resumed> )        = 0 (Timeout)
------

[-- Attachment #2: gnome-calculator-startup.log.xz --]
[-- Type: application/octet-stream, Size: 54316 bytes --]

^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#48910: Very slow startup of GTK+ applications
  2021-06-07 22:34 ` Leo Famulari
@ 2021-06-07 22:37   ` Leo Famulari
  2021-06-08  1:11     ` Leo Famulari
  0 siblings, 1 reply; 5+ messages in thread
From: Leo Famulari @ 2021-06-07 22:37 UTC (permalink / raw)
  To: 48910

[-- Attachment #1: Type: text/plain, Size: 2589 bytes --]

On Mon, Jun 07, 2021 at 06:34:59PM -0400, Leo Famulari wrote:
> Here is another strace log, for gnome-calculator.

And another, but with less abbreviation. It pauses at line 3775:

------
3757 [pid 10717] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3758 [pid 10717] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3759 [pid 10717] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\n\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3760 [pid 10717] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1(\0\0\0\v\0\0\0\203\0\0\0\1\1o\0\25\0\0\0/org/freedesktop/DBus\0\0\0\2\1s\0\24\0\0\0org.freedesktop.DBus\0     \0\0\0\6\1s\0\24\0\0\0org.freedesk"..., iov_len=192}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 192
3761 [pid 10717] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3762 [pid 10717] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3763 [pid 10717] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.345\0\0\5\1u\0\t\0\0\0\7\1s\0\24\0\0\0org.freedesktop.DBus\0\0\0\0", iov_len=56}], msg_iovlen=1     , msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3764 [pid 10717] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3765 [pid 10717] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3766 [pid 10717] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\0\0\0\0\v\0\0\0005\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG     _CMSG_CLOEXEC) = 16
3767 [pid 10717] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3768 [pid 10717] poll([{fd=5, events=POLLIN}], 1, 0) = 1 ([{fd=5, revents=POLLIN}])
3769 [pid 10717] recvmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\6\1s\0\6\0\0\0:1.345\0\0\5\1u\0\n\0\0\0\7\1s\0\24\0\0\0org.freedesktop.DBus\0\0\0\0", iov_len=56}], msg_iovlen=1     , msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 56
3770 [pid 10717] poll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
3771 [pid 10717] poll([{fd=5, events=POLLIN}], 1, 0) = 0 (Timeout)
3772 [pid 10717] write(6, "\1\0\0\0\0\0\0\0", 8) = 8
3773 [pid 10717] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}], 2, -1) = 1 ([{fd=6, revents=POLLIN}])
3774 [pid 10717] read(6, "\1\0\0\0\0\0\0\0", 16) = 8
3775 [pid 10717] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}], 2, -1 <unfinished ...>
3776 [pid 10715] <... poll resumed> )        = 0 (Timeout)
------

[-- Attachment #2: gnome-calculator-startup.log.xz --]
[-- Type: application/octet-stream, Size: 63128 bytes --]

^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#48910: Very slow startup of GTK+ applications
  2021-06-07 22:37   ` Leo Famulari
@ 2021-06-08  1:11     ` Leo Famulari
  2021-06-18  9:22       ` Ludovic Courtès
  0 siblings, 1 reply; 5+ messages in thread
From: Leo Famulari @ 2021-06-08  1:11 UTC (permalink / raw)
  To: 48910

[-- Attachment #1: Type: text/plain, Size: 810 bytes --]

Googling, I found some similar bug reports:

https://bbs.archlinux.org/viewtopic.php?id=243737
https://forum.level1techs.com/t/gtk-applications-are-super-slow-at-startup/166540

The Arch discussion is very similar, as we are both using i3 launched
with startx.

The Arch discussion pointed to their wiki page on xinit, which
includes this note:

------
Note: At the very least, ensure that the last if block in
/etc/X11/xinit/xinitrc is present in your ~/.xinitrc file to ensure that
the scripts in /etc/X11/xinit/xinitrc.d are sourced.
------

I did that, and it fixed the problem.

The file /etc/X11/xinit/xinitrc on my Debian system merely sources
/etc/X11/Xsession, which is attached for your reference.

It does a lot of things and references other files... I have no idea
what actually fixed my problem.

[-- Attachment #2: Xsession --]
[-- Type: text/plain, Size: 3517 bytes --]

#!/bin/sh
#
# /etc/X11/Xsession
#
# global Xsession file -- used by display managers and xinit (startx)

# $Id: Xsession 967 2005-12-27 07:20:55Z dnusinow $

set -e

PROGNAME=Xsession

message () {
  # pretty-print messages of arbitrary length; use xmessage if it
  # is available and $DISPLAY is set
  MESSAGE="$PROGNAME: $*"
  echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2
  if [ -n "$DISPLAY" ] && which xmessage > /dev/null 2>&1; then
    echo "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
  fi
}

message_nonl () {
  # pretty-print messages of arbitrary length (no trailing newline); use
  # xmessage if it is available and $DISPLAY is set
  MESSAGE="$PROGNAME: $*"
  echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} >&2;
  if [ -n "$DISPLAY" ] && which xmessage > /dev/null 2>&1; then
    echo -n "$MESSAGE" | fold -s -w ${COLUMNS:-80} | xmessage -center -file -
  fi
}

errormsg () {
  # exit script with error
  message "$*"
  exit 1
}

internal_errormsg () {
  # exit script with error; essentially a "THIS SHOULD NEVER HAPPEN" message
  # One big call to message() for the sake of xmessage; if we had two then
  # the user would have dismissed the error we want reported before seeing the
  # request to report it.
  errormsg "$*" \
           "Please report the installed version of the \"x11-common\"" \
           "package and the complete text of this error message to" \
           "<debian-x@lists.debian.org>."
}

# initialize variables for use by all session scripts

OPTIONFILE=/etc/X11/Xsession.options

SYSRESOURCES=/etc/X11/Xresources
USRRESOURCES=$HOME/.Xresources

SYSSESSIONDIR=/etc/X11/Xsession.d
USERXSESSION=$HOME/.xsession
USERXSESSIONRC=$HOME/.xsessionrc
ALTUSERXSESSION=$HOME/.Xsession
ERRFILE=$HOME/.xsession-errors

# attempt to create an error file; abort if we cannot
if (umask 077 && touch "$ERRFILE") 2> /dev/null && [ -w "$ERRFILE" ] &&
  [ ! -L "$ERRFILE" ]; then
  chmod 600 "$ERRFILE"
elif ERRFILE=$(tempfile 2> /dev/null); then
  if ! ln -sf "$ERRFILE" "${TMPDIR:=/tmp}/xsession-$USER"; then
    message "warning: unable to symlink \"$TMPDIR/xsession-$USER\" to" \
             "\"$ERRFILE\"; look for session log/errors in" \
             "\"$TMPDIR/xsession-$USER\"."
  fi
else
  errormsg "unable to create X session log/error file; aborting."
fi

exec >>"$ERRFILE" 2>&1

echo "$PROGNAME: X session started for $LOGNAME at $(date)"

# sanity check; is our session script directory present?
if [ ! -d "$SYSSESSIONDIR" ]; then
  errormsg "no \"$SYSSESSIONDIR\" directory found; aborting."
fi

# Attempt to create a file of non-zero length in /tmp; a full filesystem can
# cause mysterious X session failures.  We do not use touch, :, or test -w
# because they won't actually create a file with contents.  We also let standard
# error from tempfile and echo go to the error file to aid the user in
# determining what went wrong.
WRITE_TEST=$(tempfile)
if ! echo "*" >>"$WRITE_TEST"; then
  message "warning: unable to write to ${WRITE_TEST%/*}; X session may exit" \
          "with an error"
fi
rm -f "$WRITE_TEST"

# use run-parts to source every file in the session directory; we source
# instead of executing so that the variables and functions defined above
# are available to the scripts, and so that they can pass variables to each
# other
SESSIONFILES=$(run-parts --list $SYSSESSIONDIR)
if [ -n "$SESSIONFILES" ]; then
  set +e
  for SESSIONFILE in $SESSIONFILES; do
    . $SESSIONFILE
  done
  set -e
fi

exit 0

# vim:set ai et sts=2 sw=2 tw=80:

^ permalink raw reply	[flat|nested] 5+ messages in thread

* bug#48910: Very slow startup of GTK+ applications
  2021-06-08  1:11     ` Leo Famulari
@ 2021-06-18  9:22       ` Ludovic Courtès
  0 siblings, 0 replies; 5+ messages in thread
From: Ludovic Courtès @ 2021-06-18  9:22 UTC (permalink / raw)
  To: Leo Famulari; +Cc: 48910

Hi,

Leo Famulari <leo@famulari.name> skribis:

> Googling, I found some similar bug reports:
>
> https://bbs.archlinux.org/viewtopic.php?id=243737
> https://forum.level1techs.com/t/gtk-applications-are-super-slow-at-startup/166540
>
> The Arch discussion is very similar, as we are both using i3 launched
> with startx.
>
> The Arch discussion pointed to their wiki page on xinit, which
> includes this note:
>
> ------
> Note: At the very least, ensure that the last if block in
> /etc/X11/xinit/xinitrc is present in your ~/.xinitrc file to ensure that
> the scripts in /etc/X11/xinit/xinitrc.d are sourced.
> ------
>
> I did that, and it fixed the problem.
>
> The file /etc/X11/xinit/xinitrc on my Debian system merely sources
> /etc/X11/Xsession, which is attached for your reference.
>
> It does a lot of things and references other files... I have no idea
> what actually fixed my problem.

Weird.

I conclude this is not a Guix-specific issue and can be closed, right?

Thanks for sharing the tip!

Ludo’.




^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-06-18  9:23 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-07 22:30 bug#48910: Very slow startup of GTK+ applications Leo Famulari
2021-06-07 22:34 ` Leo Famulari
2021-06-07 22:37   ` Leo Famulari
2021-06-08  1:11     ` Leo Famulari
2021-06-18  9:22       ` Ludovic Courtès

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