--- Begin Message ---
Subject: |
mingetty consumes 40% CPU printing the login prompt over and over |
Date: |
Fri, 28 Apr 2017 21:11:06 -0400 |
User-agent: |
mu4e 0.9.18; emacs 25.2.1 |
I noticed that my headless server running GuixSD was busy when I am not
doing anything. When I looked at top I saw mingetty consuming 40% CPU
...
$ top -o %CPU -n 1 | head -n 25
top - 20:44:13 up 5 days, 12:58, 3 users, load average: 0.33, 0.33, 0.35
Tasks: 192 total, 1 running, 191 sleeping, 0 stopped, 0 zombie
%Cpu0 : 0.0/0.1 0[
]
%Cpu1 : 0.1/2.9 3[||
]
%Cpu2 : 0.2/4.0 4[|||
]
%Cpu3 : 0.3/4.9 5[|||
]
%Cpu4 : 0.2/0.1 0[
]
%Cpu5 : 0.2/4.6 5[|||
]
%Cpu6 : 0.2/4.3 5[|||
]
%Cpu7 : 0.3/4.1 4[|||
]
GiB Mem : 6.5/15.610 [
]
GiB Swap: 0.0/9.649 [
]
PID USER PR NI VIRT RES %CPU %MEM TIME+ S COMMAND
384 root 20 0 6.2m 0.3m 40.0 0.0 2386:36 S mingetty
7 root 20 0 0.0m 0.0m 6.7 0.0 2:20.86 S rcu_sched
4154 g1 20 0 300.3m 135.1m 6.7 0.8 3:37.67 S emacs
7431 root 20 0 0.0m 0.0m 6.7 0.0 0:26.07 S kworker/u16:2
7539 root 20 0 0.0m 0.0m 6.7 0.0 0:06.54 S kworker/u16:0
1 root 20 0 130.1m 27.9m 0.0 0.2 0:03.22 S shepherd
If I plug in a console display, I see the login prompt is being rapidly
printed over and over. If I hit the console return key the printing
stops and mingetty stops using CPU.
I am running a relatively recent GuixSD built from git checkout ...
address@hidden ~$ guix --version
guix (GNU Guix) 0.12.0
address@hidden ~$ stat ~/.config/guix/latest | grep File:
File: /home/g1/.config/guix/latest -> /home/g1/src/guix/
address@hidden ~$ git -C ~/.config/guix/latest describe
v0.12.0-3191-g25a49294c
address@hidden ~$ git -C ~/.config/guix/latest log -n 1 --oneline
25a49294c cache: Work around 'time-monotonic' bug in Guile 2.2.2.
Here is the system config:
sys.scm
Description: Binary data
--- End Message ---
--- Begin Message ---
Subject: |
Re: bug#26706: mingetty consumes 40% CPU printing the login prompt over and over |
Date: |
Fri, 06 Apr 2018 10:06:38 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) |
address@hidden skribis:
> As of guix (GNU Guix) 0.14.0.4032-cfb55 I can't reproduce this, and
> haven't seen it since ~ when first reported, so I suggest it be
> closed. TIA - George
Great, thanks for the update.
--- End Message ---