16d4acbaca
The 'D' is now capital to clarify pronunciation. DBus service name is kept as '/Tuned' not to break backward compatibility. This will also need update of downstream tests which rely on the specific output strings containing the name. Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
81 lines
2.2 KiB
Text
81 lines
2.2 KiB
Text
[id="modifying-existing-tuned-profiles_{context}"]
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= Modifying existing TuneD profiles
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This procedure creates a modified child profile based on an existing *TuneD* profile.
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.Prerequisites
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* The `tuned` service is installed and running. See xref:installing-and-enabling-tuned_getting-started-with-tuned[] for details.
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.Procedure
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. In the [filename]`/etc/tuned/` directory, create a new directory named the same as the profile that you want to create:
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+
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[subs=+quotes]
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----
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# mkdir /etc/tuned/[replaceable]_modified-profile_
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----
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. In the new directory, create a file named [filename]`tuned.conf`, and set the `[main]` section as follows:
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+
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[subs=+quotes]
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----
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[main]
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include=[replaceable]_parent-profile_
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----
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+
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Replace [replaceable]_parent-profile_ with the name of the profile you are modifying.
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. Include your profile modifications.
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+
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--
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.Lowering swappiness in the throughput-performance profile
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====
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To use the settings from the `throughput-performance` profile and change the value of `vm.swappiness` to 5, instead of the default 10, use:
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----
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[main]
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include=throughput-performance
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[sysctl]
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vm.swappiness=5
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----
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====
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--
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. To activate the profile, use:
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+
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[subs=+quotes]
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----
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# tuned-adm profile [replaceable]_modified-profile_
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----
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. Verify that the *TuneD* profile is active and the system settings are applied:
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+
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[subs=+quotes]
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----
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$ tuned-adm active
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Current active profile: [replaceable]_my-profile_
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----
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+
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----
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$ tuned-adm verify
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Verfication succeeded, current system settings match the preset profile.
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See TuneD log file ('/var/log/tuned/tuned.log') for details.
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----
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// .An alternative approach
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// . Alternatively, copy the directory with a system profile from /user/lib/tuned/ to /etc/tuned/. For example:
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// +
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// ----
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// # cp -r /usr/lib/tuned/throughput-performance /etc/tuned
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// ----
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//
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// . Then, edit the profile in /etc/tuned according to your needs. Note that if there are two profiles of the same name, the profile located in /etc/tuned/ is loaded. The disadvantage of this approach is that if a system profile is updated after a TuneD upgrade, the changes will not be reflected in the now-outdated modified version.
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.Additional resources
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* The `tuned.conf(5)` man page
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