Fedora 40 Update: realtime-setup-2.5-5.fc40

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Fedora Update Notification
FEDORA-2025-331ae0760d
2025-02-09 01:30:07.778647+00:00
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Name        : realtime-setup
Product     : Fedora 40
Version     : 2.5
Release     : 5.fc40
URL         : https://gitlab.com/rt-linux-tools/realtime-setup.git
Summary     : Setup RT/low-latency environment details
Description :
Configure details useful for low-latency environments.

Installation of this package results in:
  - creation of a realtime group
  - adds realtime limits configuration for PAM
  - adds udev specific rules for threaded irqs and /dev/rtc access
  - adds /usr/bin/slub_cpu_partial_off to turn off cpu_partials in SLUB
  - adds net-socket timestamp static key daemon (realtime-entsk)

The slub_cpu_partial_off script is used to turn off the SLUB slab allocator's
use of cpu-partials, which has been known to create latency-spikes.

The realtime-entsk program is a workaround for latency spikes caused when the
network stack enables hardware timestamping and activates a static key. The
realtime-entsk progam is activated by the systemd service included and merely
enables the timestamp static key and pauses, effectively activating the static
key and never exiting, so no deactivation/activation sequences will be seen.

Neither the slub script or realtime-entsk are active by default.

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Update Information:

Fixed issue where RPM changed %{_sbindir} to be the same as %{_bindir} by moving
executable and scripts to /usr/bin
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ChangeLog:

* Wed Jan 29 2025 Clark Williams <williams@xxxxxxxxxx> - 2.5-5
- Move realtime-entsk and kernel-is-rt to /usr/bin
* Sat Jan 18 2025 Fedora Release Engineering <releng@xxxxxxxxxxxxxxxxx> - 2.5-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
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References:

  [ 1 ] Bug #2341269 - realtime-setup: FTBFS in Fedora rawhide/f42
        https://bugzilla.redhat.com/show_bug.cgi?id=2341269
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2025-331ae0760d' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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