INFO
Name: realtime-setup
Version: 2.2-5.el9
Arch: x86_64
Summary: Setup RT/low-latency environment details
License: GPLv2
Vendor: CentOS
Build Host: x86-02.stream.rdu2.redhat.com
Build Date: Mon Jan 17 18:23:17 2022
Size: 35488
URL: https://gitlab.com/rt-linux-tools/realtime-setup.git
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.
FILES
/etc/security/limits.d/realtime.conf
/etc/sysconfig/realtime-setup
/etc/udev/rules.d/99-rhel-rt.rules
/usr/bin/realtime-setup
/usr/bin/slub_cpu_partial_off
/usr/lib/.build-id
/usr/lib/.build-id/a3
/usr/lib/.build-id/a3/255012d9883bdb2889da8fcf9e627f4d37ccd5
/usr/lib/systemd/system/realtime-entsk.service
/usr/lib/systemd/system/realtime-setup.service
/usr/sbin/kernel-is-rt
/usr/sbin/realtime-entsk
/usr/share/licenses/realtime-setup
/usr/share/licenses/realtime-setup/gpl-2.0.txt
REQUIRES
/bin/sh
/bin/sh
/usr/bin/bash
config(realtime-setup) 2.2-5.el9
kexec-tools
libc.so.6()(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.34)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
pam
rpmlib(CompressedFileNames) 3.0.4-1
rpmlib(FileDigests) 4.6.0-1
rpmlib(PayloadFilesHavePrefix) 4.0-1
rpmlib(PayloadIsZstd) 5.4.18-1
rtld(GNU_HASH)
systemd
tuna
tuned
tuned-profiles-realtime
PROVIDES
config(realtime-setup) 2.2-5.el9
realtime-setup 2.2-5.el9
realtime-setup(x86-64) 2.2-5.el9
CONFIG FILES
/etc/security/limits.d/realtime.conf cn
/etc/sysconfig/realtime-setup cn
/etc/udev/rules.d/99-rhel-rt.rules cn
/usr/bin/realtime-setup
/usr/bin/slub_cpu_partial_off
/usr/lib/.build-id a
/usr/lib/.build-id/a3 a
/usr/lib/.build-id/a3/255012d9883bdb2889da8fcf9e627f4d37ccd5 a
/usr/lib/systemd/system/realtime-entsk.service
/usr/lib/systemd/system/realtime-setup.service
/usr/sbin/kernel-is-rt
/usr/sbin/realtime-entsk
/usr/share/licenses/realtime-setup
/usr/share/licenses/realtime-setup/gpl-2.0.txt l
LICENSE FILES
GPLv2
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