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73e97bb064
With <para><filename>…</filename></para>, we get a separate "paragraph" for each line, i.e. entries separated by empty lines. This uses up a lot of space and was only done because docbook makes it hard to insert a newline. In some other places, <literallayout> was used, but then we cannot indent the source text (because the whitespace would end up in the final page). We can get the desired result with <simplelist>. With <simplelist> the items are indented in roff output, but not in html output. In some places this looks better then no indentation, and in others it would probably be better to have no indent. But this is a minor issue and we cannot control that. (I didn't convert all spots. There's a bunch of other man pages which have two lines, e.g. an executable and service file, and it doesn't matter there so much.)
109 lines
5.1 KiB
XML
109 lines
5.1 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="oomd.conf" conditional='ENABLE_OOMD'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>oomd.conf</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>oomd.conf</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>oomd.conf</refname>
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<refname>oomd.conf.d</refname>
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<refpurpose>Global <command>systemd-oomd</command> configuration files</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><simplelist>
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<member><filename>/etc/systemd/oomd.conf</filename></member>
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<member><filename>/etc/systemd/oomd.conf.d/*.conf</filename></member>
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<member><filename>/usr/lib/systemd/oomd.conf.d/*.conf</filename></member>
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</simplelist></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>These files configure the various parameters of the
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> userspace
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out-of-memory (OOM) killer,
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<citerefentry><refentrytitle>systemd-oomd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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See <citerefentry><refentrytitle>systemd.syntax</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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for a general description of the syntax.</para>
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</refsect1>
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<xi:include href="standard-conf.xml" xpointer="main-conf" />
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<refsect1>
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<title>[OOM] Section Options</title>
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<para>The following options are available in the [OOM] section:</para>
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<variablelist class='config-directives'>
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<varlistentry>
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<term><varname>SwapUsedLimit=</varname></term>
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<listitem><para>Sets the limit for memory and swap usage on the system before <command>systemd-oomd</command>
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will take action. If the fraction of memory used and the fraction of swap used on the system are both more than
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what is defined here, <command>systemd-oomd</command> will act on eligible descendant control groups with swap
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usage greater than 5% of total swap, starting from the ones with the highest swap usage. Which
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control groups are monitored and what action gets taken depends on what the unit has configured for
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<varname>ManagedOOMSwap=</varname>. Takes a value specified in percent (when suffixed with "%"),
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permille ("‰") or permyriad ("‱"), between 0% and 100%, inclusive. Defaults to 90%.</para>
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<xi:include href="version-info.xml" xpointer="v247"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultMemoryPressureLimit=</varname></term>
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<listitem><para>Sets the limit for memory pressure on the unit's control group before
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<command>systemd-oomd</command> will take action. A unit can override this value with
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<varname>ManagedOOMMemoryPressureLimit=</varname>. The memory pressure for this property represents
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the fraction of time in a 10 second window in which all tasks in the control group were delayed. For
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each monitored control group, if the memory pressure on that control group exceeds the limit set for
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longer than the duration set by <varname>DefaultMemoryPressureDurationSec=</varname>,
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<command>systemd-oomd</command> will act on eligible descendant control groups, starting from the
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ones with the most reclaim activity to the least reclaim activity. Which control groups are monitored
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and what action gets taken depends on what the unit has configured for
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<varname>ManagedOOMMemoryPressure=</varname>. Takes a fraction specified in the same way as
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<varname>SwapUsedLimit=</varname> above. Defaults to 60%.</para>
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<xi:include href="version-info.xml" xpointer="v247"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultMemoryPressureDurationSec=</varname></term>
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<listitem><para>Sets the amount of time a unit's control group needs to have exceeded memory pressure
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limits before <command>systemd-oomd</command> will take action. Memory pressure limits are defined by
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<varname>DefaultMemoryPressureLimit=</varname> and <varname>ManagedOOMMemoryPressureLimit=</varname>.
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Must be set to 0, or at least 1 second. Defaults to 30 seconds when unset or 0.</para>
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<xi:include href="version-info.xml" xpointer="v248"/></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-oomd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>oomctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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