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2.5. Additional Resources
For more information on how to use systemd and related tools to manage system resources on Red Hat Enterprise Linux, see the sources listed below:
Installed Documentation
Man Pages of Cgroup-Related Systemd Tools
systemd-run(1) — The manual page lists all command-line options of thesystemd-runutility.systemctl(1) — The manual page of the systemctl utility that lists available options and commands.systemd-cgls(1) — This manual page lists all command-line options of thesystemd-cglsutility.systemd-cgtop(1) — The manual page contains the list of all command-line options of thesystemd-cgtoputility.machinectl(1) — This manual page lists all command-line options of themachinectlutility.systemd.kill(5) — This manual page provides an overview of kill configuration options for system units.
Controller-Specific Kernel Documentation
The kernel-doc package provides detailed documentation of all resource controllers. This package is included in the Optional subscription channel. Before subscribing to the Optional channel, see the Scope of Coverage Details channel, then follow the steps documented in the article called How to access Optional and Supplementary channels, and -devel packages using Red Hat Subscription Manager (RHSM)? on Red Hat Customer Portal. To install kernel-doc from the Optional channel, type as
root:
yum install kernel-doc
~]# yum install kernel-doc
After the installation, the following files will appear under the
/usr/share/doc/kernel-doc-<kernel_version>/Documentation/cgroups/ directory:
blkiosubsystem —blkio-controller.txtcpuacctsubsystem —cpuacct.txtcpusetsubsystem —cpusets.txtdevicessubsystem —devices.txtfreezersubsystem —freezer-subsystem.txtmemorysubsystem —memory.txtnet_clssubsystem —net_cls.txt
Additionally, see the following files on further information about the
cpu subsystem:
- Real-Time scheduling —
/usr/share/doc/kernel-doc-<kernel_version>/Documentation/scheduler/sched-rt-group.txt - CFS scheduling —
/usr/share/doc/kernel-doc-<kernel_version>/Documentation/scheduler/sched-bwc.txt
Online Documentation
- Red Hat Enterprise Linux 7 System Administrators Guide — The System Administrator's Guide documents relevant information regarding the deployment, configuration and administration of Red Hat Enterprise Linux 7. It is oriented towards system administrators with a basic understanding of the system.
- The D-Bus API of systemd — The reference for D-Bus API commands for accessing systemd.
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