[Nut-upsuser] Upssched 100% CPU after updating Debian 12

[Kari Lempiäinen]

Hi,

Thanks Jim! Here is more system information from the commands you mentioned.

Kari

root at fricka:~# lsof -p 1716171
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1002/gvfs
      Output information may be incomplete.
COMMAND      PID USER   FD   TYPE             DEVICE SIZE/OFF     NODE NAME
upssched 1716171 root  cwd    DIR                8,2     4096        2 /
upssched 1716171 root  rtd    DIR                8,2     4096        2 /
upssched 1716171 root  txt    REG                8,2    39240 21762148 /usr/sbin/upssched
upssched 1716171 root  mem    REG                8,2  1922136 21764230 /usr/lib/x86_64-linux-gnu/libc.so.6
upssched 1716171 root  mem    REG                8,2   210968 21764476 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
upssched 1716171 root    0u   CHR                1,3      0t0        4 /dev/null
upssched 1716171 root    1u   CHR                1,3      0t0        4 /dev/null
upssched 1716171 root    2u   CHR                1,3      0t0        4 /dev/null
upssched 1716171 root    3u  unix 0x00000000eeb52825      0t0 16427010 type=DGRAM (CONNECTED)
upssched 1716171 root    4r   REG                8,2      545 39847858 /etc/nut/upssched.conf
upssched 1716171 root    5u  unix 0x00000000a035b466      0t0 16426351 type=STREAM (UNCONNECTED)
upssched 1716171 root    6u  unix 0x0000000050820b2b      0t0 16426352 type=STREAM (UNCONNECTED)
upssched 1716171 root    7u  unix 0x00000000447aac0e      0t0 16424724 /var/run/nut/upssched.pipe type=STREAM (CONNECTED)
upssched 1716171 root   10u  unix 0x00000000d7bd8088      0t0 16424722 /var/run/nut/upssched.pipe type=STREAM (LISTEN)


root at fricka:~# ps -ef|grep ups
root        1425       1  0 Jun11 ?        00:00:00 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
root     1156722       1  0 00:00 ?        00:00:00 /usr/sbin/cupsd -l
root     1156723       1  0 00:00 ?        00:00:00 /usr/sbin/cups-browsed
lp       1156748 1156722  0 00:00 ?        00:00:00 /usr/lib/cups/notifier/dbus dbus://
nut      1713117       1  0 14:30 ?        00:00:00 /lib/nut/dummy-ups -a heartbeat
nut      1713154       1  0 14:30 ?        00:00:00 /lib/nut/usbhid-ups -a eaton5s
nut      1713155       1  0 14:30 ?        00:00:00 /lib/nut/upsd -F
root     1713156       1  0 14:30 ?        00:00:00 /lib/nut/upsmon -F
root     1713157 1713156  0 14:30 ?        00:00:00 /lib/nut/upsmon -F
root     1716171       1 99 14:35 ?        00:05:10 /sbin/upssched UPS heartbeat at localhost: On battery.
root     1719510 1550505  0 14:40 pts/2    00:00:00 grep ups




root at fricka:~# fuser /var/run/nut/upssched.pipe
/run/nut/upssched.pipe: 1716171


root at fricka:/proc/1716171/fd# ls -la
total 0
dr-x------ 2 root root  0 Jun 13 14:36 .
dr-xr-xr-x 9 root root  0 Jun 13 14:35 ..
lrwx------ 1 root root 64 Jun 13 14:36 0 -> /dev/null
lrwx------ 1 root root 64 Jun 13 14:36 1 -> /dev/null
lrwx------ 1 root root 64 Jun 13 14:36 10 -> 'socket:[16424722]'
lrwx------ 1 root root 64 Jun 13 14:36 2 -> /dev/null
lrwx------ 1 root root 64 Jun 13 14:36 3 -> 'socket:[16427010]'
lr-x------ 1 root root 64 Jun 13 14:36 4 -> /etc/nut/upssched.conf
lrwx------ 1 root root 64 Jun 13 14:36 5 -> 'socket:[16426351]'
lrwx------ 1 root root 64 Jun 13 14:36 6 -> 'socket:[16426352]'
lrwx------ 1 root root 64 Jun 13 14:36 7 -> 'socket:[16424724]'



________________________________
From: Jim Klimov <jimklimov+nut at gmail.com>
Sent: Tuesday, June 13, 2023 14:17
To: Kari Lempiäinen <kari.lempiainen at summerday.net>
Cc: Arnaud Quette via Nut-upsuser <nut-upsuser at alioth-lists.debian.net>; nut-upsdev <nut-upsdev at alioth-lists.debian.net>; Dimitris Economou <dimitris.s.economou at gmail.com>
Subject: Re: [Nut-upsuser] Upssched 100% CPU after updating Debian 12

FWIW, cross-posted the issue to NUT GitHub tracker: https://github.com/networkupstools/nut/issues/1964

Jim
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