fix memory increase by not send login-history via dbus
Memory of 3 processes (accounts-daemon, gdm-session-worker, gnome-shell) increase
when repeat ssh login/logout.
This problem was discovered by testing system of using Ansible.
This is result of repeat ssh login/logout every second for 2 days. pslog_fc29_git_2days.txt
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
===== 1 times (Mon Dec 3 15:16:31 JST 2018)=====
root 585 0.0 0.1 456876 7964 ? Ssl 15:15 0:00 /usr/libexec/accounts-daemon
root 987 0.0 0.2 401940 11796 ? Sl 15:16 0:00 gdm-session-worker [pam/gdm-password]
root 1092 27.9 6.0 2463880 244764 tty2 Rl+ 15:16 0:06 /usr/bin/gnome-shell
-> 2days later
===== 49 times (Wed Dec 5 15:16:33 JST 2018)=====
root 585 45.5 8.6 780780 348916 ? Rsl Dec03 1312:02 /usr/libexec/accounts-daemon
root 987 16.2 4.4 558696 179724 ? Sl Dec03 469:00 gdm-session-worker [pam/gdm-password]
root 1092 20.2 10.2 2625012 412528 tty2 Rl+ Dec03 581:59 /usr/bin/gnome-shell
- Environment : ssh login from RHEL 7.3 to Fedora29(git ver of accounts-service)
Reproduction
Repeat ssh login/logout by using attached script autologin.sh autologin.shget_pslog.sh
You can see RSS increase even just 10 minutes.
Reproduction Immediately
I attached /var/log/wtmp file which was created by repeat ssh login/logout for 2 days. wtmp_2days.gzwtmp_5days.gz
Only copy to /var/log/wtmp.
This is pseudo, not the complete same result (especially RSS of accounts-daemon),
but the way to see RSS increase immediately.
# rm /var/log/wtmp
# reboot
# ps aux | grep -e accounts-daemon -e gdm-session-worker -e gnome-shell
# gunzip /tmp/wtmp.gz
# cp /tmp/wtmp /var/log/
# ps aux | grep -e accounts-daemon -e gdm-session-worker -e gnome-shell
If you want to see/edit wtmp, please use utmpdump command.
# utmpdump /tmp/wtmp > /tmp/wtmp.txt
# vi /tmp/wtmp.txt
# utmpdump -r < /tmp/wtmp.txt > /tmp/wtmp
Patch
This memory increase is occured by this patch.
This patch makes send login-history via dbus in result.
https://bugs.freedesktop.org/show_bug.cgi?id=106162
https://bugs.freedesktop.org/attachment.cgi?id=138961
commit e18e8a3a
So, I reverts above patch about login-history only.
This is result of patched accountsservice.pslog_fc29_git_patched_2days.txt
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
===== 1 times (Mon Dec 3 09:55:35 JST 2018)=====
root 588 0.0 0.1 456884 7840 ? Ssl 09:54 0:00 /usr/libexec/accounts-daemon
root 990 0.0 0.2 401936 11792 ? Sl 09:54 0:00 gdm-session-worker [pam/gdm-password]
root 1094 13.8 6.0 2464904 244084 tty2 Rl+ 09:54 0:08 /usr/bin/gnome-shell
-> 2days later
===== 49 times (Wed Dec 5 09:55:38 JST 2018)=====
root 588 56.2 7.9 766584 319868 ? Rsl Dec03 1621:32 /usr/libexec/accounts-daemon
root 990 0.0 0.2 401936 11872 ? Sl Dec03 0:39 gdm-session-worker [pam/gdm-password]
root 1094 2.3 6.3 2479028 255900 tty2 Sl+ Dec03 67:25 /usr/bin/gnome-shell