<div dir="auto">Thanks for the feedback. <div dir="auto"><br></div><div dir="auto">Just the bit about "when provided by Debian" concerns me - we have a slow-ish cadence of releases, and then distros take another year to ship them :\</div><div dir="auto"><br></div><div dir="auto">You might be reasonably served by a custom build (in-place or even package). YMMV...</div><div dir="auto"><br></div><div dir="auto">Jim </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jun 13, 2023, 18:38 Kari Lempiäinen <<a href="mailto:kari.lempiainen@summerday.net">kari.lempiainen@summerday.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="en-FI" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="m_7209506244044326530WordSection1">
<p class="MsoNormal"><span lang="FI" style="font-size:11.0pt">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="FI" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Great work Jim! I’m glad you could reproduce the problem and found a potential culprit.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Just for my own interest I restored upsshed from my backups (version
</span><span style="font-size:11.0pt">2.7.4-13</span><span lang="EN-US" style="font-size:11.0pt">) and it seems to running ok, so no big runtime changes regarding that with Debian 12. It is not hogging CPU. From the daemon log the heartbeat seems to be working
ok. Only difference between the old logs (pre Debian 12 update) is the there is this line (Network UPS Tools upsmon 2.8.0) every five minutes.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:17:08 fricka upssched[1896873]: Timer daemon started<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:17:08 fricka upssched[1896873]: New timer: heartbeat-failure-timer (660 seconds)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:17:08 fricka nut-monitor[1896870]: Network UPS Tools upsmon 2.8.0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:22:08 fricka nut-monitor[1899911]: Network UPS Tools upsmon 2.8.0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:27:08 fricka upssched[1896873]: Cancelling timer: heartbeat-failure-timer<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:27:08 fricka upssched[1896873]: New timer: heartbeat-failure-timer (660 seconds)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:27:08 fricka nut-monitor[1903379]: Network UPS Tools upsmon 2.8.0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Jun 13 19:32:13 fricka nut-monitor[1906677]: Network UPS Tools upsmon 2.8.0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">That line wasn’t there previously. I will leave the old version in place until nut gets fixed and it’s been provided by Debian.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">This actually reminded me of a similar problem I had myself a loooong time ago. I was writing a large software distribution program for a Windows platform. The connection between server and client
were done by TCP sockets. In my server code there was place where I read reply from the client and the read (from socket) function didn’t return error code, but the data length was 0. In the documentation, at least at the time, it wasn’t specified directly
that it was an error situation. My server code looped in a thread hogging CPU. When I modified the code to treat 0 bytes read as an error, everything worked fine.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best regards, <u></u>
<u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Kari<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<div id="m_7209506244044326530mail-editor-reference-message-container">
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<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Jim Klimov <<a href="mailto:jimklimov%2Bnut@gmail.com" target="_blank" rel="noreferrer">jimklimov+nut@gmail.com</a>><br>
<b>Date: </b>Tuesday, 13. June 2023 at 18.36<br>
<b>To: </b>Kari Lempiäinen <<a href="mailto:kari.lempiainen@summerday.net" target="_blank" rel="noreferrer">kari.lempiainen@summerday.net</a>><br>
<b>Cc: </b>Arnaud Quette via Nut-upsuser <<a href="mailto:nut-upsuser@alioth-lists.debian.net" target="_blank" rel="noreferrer">nut-upsuser@alioth-lists.debian.net</a>>, nut-upsdev <<a href="mailto:nut-upsdev@alioth-lists.debian.net" target="_blank" rel="noreferrer">nut-upsdev@alioth-lists.debian.net</a>>, Dimitris Economou <<a href="mailto:dimitris.s.economou@gmail.com" target="_blank" rel="noreferrer">dimitris.s.economou@gmail.com</a>><br>
<b>Subject: </b>Re: [Nut-upsuser] Upssched 100% CPU after updating Debian 12<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt">So... determining that FD is to be reaped proved hard. Internet lore suggests fcntl() and poll() on the FD, but it just seems valid to them. The errno is also usually not raised (once I saw a "111: Connection
refused" though).<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">So the best dumb idea so far is to bail out if we spent the whole loop (128 attempts) and only got zero-sized read replies and no errors.<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://github.com/networkupstools/nut/pull/1965" target="_blank" rel="noreferrer">https://github.com/networkupstools/nut/pull/1965</a><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Jim<u></u><u></u></span></p>
</div>
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<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">On Tue, Jun 13, 2023 at 4:06 PM Jim Klimov <<a href="mailto:jimklimov%2Bnut@gmail.com" target="_blank" rel="noreferrer">jimklimov+nut@gmail.com</a>> wrote:<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt">After launching the command several times, with debug (posted by new code in a new branch for the investigation) confirming that the same daemon handles operations from the new client instances, its strace
now has numerous FDs to report after select() - so I guess it is a problem of detecting an exit of the counterpart.<u></u><u></u></span></p>
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<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt"><br>
<br>
<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> 0.000000 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000034 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000041 [D1] parse_at: processing CANCEL-TIMER<br>
0.000054 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000057 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000060 [D1] parse_at: processing START-TIMER<br>
0.000151 [D1] Keeping stderr open due to debug verbosity 8<br>
0.000195 Timer daemon started<br>
0.000204 [D2] Timer daemon waiting for connections on pipefd 10<br>
0.250325 [D3] new connection on fd 7<br>
0.250377 New timer: heartbeat-failure-timer (660 seconds)<br>
0.250423 [D1] Exiting upssched (CLI process)<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> 0.000000 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000039 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000047 [D1] parse_at: processing CANCEL-TIMER<br>
14.745773 [D3] new connection on fd 8<br>
14.745829 Cancelling timer: heartbeat-failure-timer<br>
0.000153 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000159 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000163 [D1] parse_at: processing START-TIMER<br>
14.745890 [D3] new connection on fd 9<br>
14.745969 New timer: heartbeat-failure-timer (660 seconds)<br>
0.000293 [D1] Exiting upssched (CLI process)<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> 0.000001 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000042 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000050 [D1] parse_at: processing CANCEL-TIMER<br>
47.674032 [D3] new connection on fd 11<br>
47.674160 Cancelling timer: heartbeat-failure-timer<br>
0.000266 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000277 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000284 [D1] parse_at: processing START-TIMER<br>
47.674235 [D3] new connection on fd 12<br>
47.674388 New timer: heartbeat-failure-timer (660 seconds)<br>
0.000487 [D1] Exiting upssched (CLI process)<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
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<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Note that `select` only lists remnants of "new connection" but not the FD#10 (pipefd):<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"> select(13, [7 8 9 10 11 12], NULL, NULL, {tv_sec=1, tv_usec=0}) = 5 (in [7 8 9 11 12], left {tv_sec=0, tv_usec=999997})<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Jim<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">On Tue, Jun 13, 2023 at 3:41 PM Jim Klimov <<a href="mailto:jimklimov%2Bnut@gmail.com" target="_blank" rel="noreferrer">jimklimov+nut@gmail.com</a>> wrote:<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">So, got some good news: I hear(*) I managed to reproduce the problem with current NUT master and an adapted copy of your posted configs and script :D<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Experimental debugging now sounds possible.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt">(*) PC under the desk wails with all its cooling fans as soon as I started the client which spawned a daemon and itself had exited:<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">$ UPSNAME=heartbeat@localhost NOTIFYTYPE=ONBATT NUT_STATEPATH=/dev/shm NUT_CONFPATH=`pwd`/tests/NIT/tmp/etc ./clients/upssched -DDDDDDDD<br>
0.000000 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000053 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000066 [D1] parse_at: processing CANCEL-TIMER<br>
0.000089 [D2] parse_at: is 'heartbeat@localhost' in AT command the 'heartbeat@localhost' we were launched to process?<br>
0.000096 [D1] parse_at: 'heartbeat@localhost' in AT command matched the 'heartbeat@localhost' UPSNAME we were launched to process<br>
0.000104 [D1] parse_at: processing START-TIMER<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">$<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Jim<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">On Tue, Jun 13, 2023 at 1:58 PM Kari Lempiäinen <<a href="mailto:kari.lempiainen@summerday.net" target="_blank" rel="noreferrer">kari.lempiainen@summerday.net</a>> wrote:<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Hi,<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Thanks Jim! Here is more system information from the commands you mentioned.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Kari<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root@fricka:~# lsof -p 1716171
<u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1002/gvfs<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"> Output information may be incomplete.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root cwd DIR 8,2 4096 2 /<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root rtd DIR 8,2 4096 2 /<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root txt REG 8,2 39240 21762148 /usr/sbin/upssched<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root mem REG 8,2 1922136 21764230 /usr/lib/x86_64-linux-gnu/libc.so.6<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root mem REG 8,2 210968 21764476 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 0u CHR 1,3 0t0 4 /dev/null<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 1u CHR 1,3 0t0 4 /dev/null<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 2u CHR 1,3 0t0 4 /dev/null<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 3u unix 0x00000000eeb52825 0t0 16427010 type=DGRAM (CONNECTED)<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 4r REG 8,2 545 39847858 /etc/nut/upssched.conf<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 5u unix 0x00000000a035b466 0t0 16426351 type=STREAM (UNCONNECTED)<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 6u unix 0x0000000050820b2b 0t0 16426352 type=STREAM (UNCONNECTED)<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 7u unix 0x00000000447aac0e 0t0 16424724 /var/run/nut/upssched.pipe type=STREAM (CONNECTED)<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">upssched 1716171 root 10u unix 0x00000000d7bd8088 0t0 16424722 /var/run/nut/upssched.pipe type=STREAM (LISTEN)<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root@fricka:~# ps -ef|grep ups<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1425 1 0 Jun11 ? 00:00:00 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1156722 1 0 00:00 ? 00:00:00 /usr/sbin/cupsd -l<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1156723 1 0 00:00 ? 00:00:00 /usr/sbin/cups-browsed<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lp 1156748 1156722 0 00:00 ? 00:00:00 /usr/lib/cups/notifier/dbus dbus://<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">nut 1713117 1 0 14:30 ? 00:00:00 /lib/nut/dummy-ups -a heartbeat<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">nut 1713154 1 0 14:30 ? 00:00:00 /lib/nut/usbhid-ups -a eaton5s<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">nut 1713155 1 0 14:30 ? 00:00:00 /lib/nut/upsd -F<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1713156 1 0 14:30 ? 00:00:00 /lib/nut/upsmon -F<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1713157 1713156 0 14:30 ? 00:00:00 /lib/nut/upsmon -F<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1716171 1 99 14:35 ? 00:05:10 /sbin/upssched UPS heartbeat@localhost: On battery.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root 1719510 1550505 0 14:40 pts/2 00:00:00 grep ups<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root@fricka:~# fuser /var/run/nut/upssched.pipe<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">/run/nut/upssched.pipe: 1716171<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">root@fricka:/proc/1716171/fd# ls -la<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">total 0<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">dr-x------ 2 root root 0 Jun 13 14:36 .<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">dr-xr-xr-x 9 root root 0 Jun 13 14:35 ..<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 0 -> /dev/null<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 1 -> /dev/null<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 10 -> 'socket:[16424722]'<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 2 -> /dev/null<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 3 -> 'socket:[16427010]'<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lr-x------ 1 root root 64 Jun 13 14:36 4 -> /etc/nut/upssched.conf<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 5 -> 'socket:[16426351]'<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 6 -> 'socket:[16426352]'<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">lrwx------ 1 root root 64 Jun 13 14:36 7 -> 'socket:[16424724]'<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><u></u> <u></u></span></p>
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<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:11.0pt">
<hr size="0" width="100%" align="center">
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<div id="m_7209506244044326530m_3863736705357785274m_-8937715224875115372m_-3595996456645787348divRplyFwdMsg">
<p class="MsoNormal"><b><span style="font-size:11.0pt;color:black">From:</span></b><span style="font-size:11.0pt;color:black"> Jim Klimov <<a href="mailto:jimklimov%2Bnut@gmail.com" target="_blank" rel="noreferrer">jimklimov+nut@gmail.com</a>><br>
<b>Sent:</b> Tuesday, June 13, 2023 14:17<br>
<b>To:</b> Kari Lempiäinen <<a href="mailto:kari.lempiainen@summerday.net" target="_blank" rel="noreferrer">kari.lempiainen@summerday.net</a>><br>
<b>Cc:</b> Arnaud Quette via Nut-upsuser <<a href="mailto:nut-upsuser@alioth-lists.debian.net" target="_blank" rel="noreferrer">nut-upsuser@alioth-lists.debian.net</a>>; nut-upsdev <<a href="mailto:nut-upsdev@alioth-lists.debian.net" target="_blank" rel="noreferrer">nut-upsdev@alioth-lists.debian.net</a>>;
Dimitris Economou <<a href="mailto:dimitris.s.economou@gmail.com" target="_blank" rel="noreferrer">dimitris.s.economou@gmail.com</a>><br>
<b>Subject:</b> Re: [Nut-upsuser] Upssched 100% CPU after updating Debian 12</span><span style="font-size:11.0pt">
<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"> <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">FWIW, cross-posted the issue to NUT GitHub tracker:
<a href="https://github.com/networkupstools/nut/issues/1964" target="_blank" rel="noreferrer">https://github.com/networkupstools/nut/issues/1964</a><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Jim<u></u><u></u></span></p>
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