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diff --git a/man/oomd.conf.xml b/man/oomd.conf.xml new file mode 100644 index 0000000..1092fee --- /dev/null +++ b/man/oomd.conf.xml @@ -0,0 +1,100 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> +<!-- SPDX-License-Identifier: LGPL-2.1-or-later --> + +<refentry id="oomd.conf" conditional='ENABLE_OOMD' + xmlns:xi="http://www.w3.org/2001/XInclude"> + <refentryinfo> + <title>oomd.conf</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>oomd.conf</refentrytitle> + <manvolnum>5</manvolnum> + </refmeta> + + <refnamediv> + <refname>oomd.conf</refname> + <refname>oomd.conf.d</refname> + <refpurpose>Global <command>systemd-oomd</command> configuration files</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>/etc/systemd/oomd.conf</filename></para> + <para><filename>/etc/systemd/oomd.conf.d/*.conf</filename></para> + <para><filename>/usr/lib/systemd/oomd.conf.d/*.conf</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para>These files configure the various parameters of the + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> userspace + out-of-memory (OOM) killer, + <citerefentry><refentrytitle>systemd-oomd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. + See <citerefentry><refentrytitle>systemd.syntax</refentrytitle><manvolnum>7</manvolnum></citerefentry> + for a general description of the syntax.</para> + + </refsect1> + + <xi:include href="standard-conf.xml" xpointer="main-conf" /> + + <refsect1> + <title>[OOM] Section Options</title> + + <para>The following options are available in the [OOM] section:</para> + + <variablelist class='config-directives'> + <varlistentry> + <term><varname>SwapUsedLimit=</varname></term> + + <listitem><para>Sets the limit for memory and swap usage on the system before <command>systemd-oomd</command> + will take action. If the fraction of memory used and the fraction of swap used on the system are both more than + what is defined here, <command>systemd-oomd</command> will act on eligible descendant control groups with swap + usage greater than 5% of total swap, starting from the ones with the highest swap usage. Which + control groups are monitored and what action gets taken depends on what the unit has configured for + <varname>ManagedOOMSwap=</varname>. Takes a value specified in percent (when suffixed with "%"), + permille ("‰") or permyriad ("‱"), between 0% and 100%, inclusive. Defaults to 90%.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>DefaultMemoryPressureLimit=</varname></term> + + <listitem><para>Sets the limit for memory pressure on the unit's control group before + <command>systemd-oomd</command> will take action. A unit can override this value with + <varname>ManagedOOMMemoryPressureLimit=</varname>. The memory pressure for this property represents + the fraction of time in a 10 second window in which all tasks in the control group were delayed. For + each monitored control group, if the memory pressure on that control group exceeds the limit set for + longer than the duration set by <varname>DefaultMemoryPressureDurationSec=</varname>, + <command>systemd-oomd</command> will act on eligible descendant control groups, starting from the + ones with the most reclaim activity to the least reclaim activity. Which control groups are monitored + and what action gets taken depends on what the unit has configured for + <varname>ManagedOOMMemoryPressure=</varname>. Takes a fraction specified in the same way as + <varname>SwapUsedLimit=</varname> above. Defaults to 60%.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>DefaultMemoryPressureDurationSec=</varname></term> + + <listitem><para>Sets the amount of time a unit's control group needs to have exceeded memory pressure + limits before <command>systemd-oomd</command> will take action. Memory pressure limits are defined by + <varname>DefaultMemoryPressureLimit=</varname> and <varname>ManagedOOMMemoryPressureLimit=</varname>. + Must be set to 0, or at least 1 second. Defaults to 30 seconds when unset or 0.</para></listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-oomd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>oomctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |