Your message dated Sat, 12 Apr 2025 01:07:03 +0000
with message-id <[email protected]>
and subject line Bug#1086000: fixed in ntpsec 1.2.3+dfsg1-5
has caused the Debian Bug report #1086000,
regarding ntpsec: ntpd runs with SCHED_FIFO 99 and might starve the system
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
1086000: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1086000
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: ntpsec
Version: 1.2.2+dfsg1-1+deb12u1
Severity: important
Dear Maintainer,
the ntpsec service starts the ntpd binary with the option "-N|--nice" (defined
in ntpsec.default (/etc/default/ntpsec) [1]. By that, the ntpd will run with
the highest possible priority, which is SCHED_FIFO, prio 99. These
priorities are discouraged as this can starve kernel threads. I also
don't think that it is the intention of the maintainer to let it run at
such a high priority.
Some recent stalls of PREEMPT_RT systems we observed could be related to
this.
Despite this option being called "nice", it does not just set the
niceness level. The corresponding code in ntpd is found in [2].
Removing this option lets the ntpd run with SCHED_OTHER, prio 20.
[1]
https://salsa.debian.org/debian/ntpsec/-/blob/debian/unstable/debian/ntpsec.default?ref_type=heads#L1
[2]
https://github.com/ntp-project/ntp/blame/9c75327c3796ff59ac648478cd4da8b205bceb77/ntpd/ntpd.c#L446
Best regards,
Felix Moessbauer
Siemens AG
-- System Information:
Debian Release: 12.7
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 6.10.11+bpo-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages ntpsec depends on:
ii adduser 3.134
ii init-system-helpers 1.65.2
ii libbsd0 0.11.7-2
ii libc6 2.36-9+deb12u8
ii libcap2 1:2.66-4
ii libssl3 3.0.14-1~deb12u2
ii netbase 6.4
ii python3 3.11.2-1+b1
pn python3-ntp <none>
ii sysvinit-utils [lsb-base] 3.06-4
ii tzdata 2024a-0+deb12u1
Versions of packages ntpsec recommends:
ii cron [cron-daemon] 3.0pl1-162
ii systemd 252.30-1~deb12u2
Versions of packages ntpsec suggests:
ii apparmor 3.0.8-3
pn certbot <none>
pn ntpsec-doc <none>
pn ntpsec-ntpviz <none>
--- End Message ---
--- Begin Message ---
Source: ntpsec
Source-Version: 1.2.3+dfsg1-5
Done: Richard Laager <[email protected]>
We believe that the bug you reported is fixed in the latest version of
ntpsec, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Richard Laager <[email protected]> (supplier of updated ntpsec package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
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Hash: SHA512
Format: 1.8
Date: Tue, 08 Apr 2025 00:54:46 +0000
Source: ntpsec
Built-For-Profiles: noudeb
Architecture: source
Version: 1.2.3+dfsg1-5
Distribution: unstable
Urgency: medium
Maintainer: Richard Laager <[email protected]>
Changed-By: Richard Laager <[email protected]>
Closes: 1086000 1091303
Changes:
ntpsec (1.2.3+dfsg1-5) unstable; urgency=medium
.
* Backport more armhf fixes (Closes: 1091303)
* Stop running with real-time priority (Closes: 1086000)
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