about the incompatibilities, see the <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/Incompatibilities">Incompatibilities
with SysV</ulink> document.</para>
+
+ <para>The <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ command allows creating <filename>.service</filename> and <filename>.scope</filename> units dynamically
+ and transiently from the command line.</para>
</refsect1>
<refsect1>
</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>TimeoutAbortSec=</varname></term>
+ <listitem><para>This option configures the time to wait for the service to terminate when it was aborted due to a
+ watchdog timeout (see <varname>WatchdogSec=</varname>). If the service has a short <varname>TimeoutStopSec=</varname>
+ this option can be used to give the system more time to write a core dump of the service. Upon expiration the service
+ will be forcibly terminated by <constant>SIGKILL</constant> (see <varname>KillMode=</varname> in
+ <citerefentry><refentrytitle>systemd.kill</refentrytitle><manvolnum>5</manvolnum></citerefentry>). The core file will
+ be truncated in this case. Use <varname>TimeoutAbortSec=</varname> to set a sensible timeout for the core dumping per
+ service that is large enough to write all expected data while also being short enough to handle the service failure
+ in due time.
+ </para>
+
+ <para>Takes a unit-less value in seconds, or a time span value such as "5min 20s". Pass an empty value to skip
+ the dedicated watchdog abort timeout handling and fall back <varname>TimeoutStopSec=</varname>. Pass
+ <literal>infinity</literal> to disable the timeout logic. Defaults to <varname>DefaultTimeoutAbortSec=</varname> from
+ the manager configuration file (see
+ <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
+ </para>
+
+ <para>If a service of <varname>Type=notify</varname> handles <constant>SIGABRT</constant> itself (instead of relying
+ on the kernel to write a core dump) it can send <literal>EXTEND_TIMEOUT_USEC=…</literal> to
+ extended the abort time beyond <varname>TimeoutAbortSec=</varname>. The first receipt of this message
+ must occur before <varname>TimeoutAbortSec=</varname> is exceeded, and once the abort time has exended beyond
+ <varname>TimeoutAbortSec=</varname>, the service manager will allow the service to continue to abort, provided
+ the service repeats <literal>EXTEND_TIMEOUT_USEC=…</literal> within the interval specified, or terminates itself
+ (see <citerefentry><refentrytitle>sd_notify</refentrytitle><manvolnum>3</manvolnum></citerefentry>).
+ </para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>TimeoutSec=</varname></term>
<listitem><para>A shorthand for configuring both
above.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>OOMPolicy=</varname></term>
+
+ <listitem><para>Configure the Out-Of-Memory (OOM) killer policy. On Linux, when memory becomes scarce
+ the kernel might decide to kill a running process in order to free up memory and reduce memory
+ pressure. This setting takes one of <constant>continue</constant>, <constant>stop</constant> or
+ <constant>kill</constant>. If set to <constant>continue</constant> and a process of the service is
+ killed by the kernel's OOM killer this is logged but the service continues running. If set to
+ <constant>stop</constant> the event is logged but the service is terminated cleanly by the service
+ manager. If set to <constant>kill</constant> and one of the service's processes is killed by the OOM
+ killer the kernel is instructed to kill all remaining processes of the service, too. Defaults to the
+ setting <varname>DefaultOOMPolicy=</varname> in
+ <citerefentry><refentrytitle>system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry> is
+ set to, except for services where <varname>Delegate=</varname> is turned on, where it defaults to
+ <constant>continue</constant>.</para>
+
+ <para>Use the <varname>OOMScoreAdjust=</varname> setting to configure whether processes of the unit
+ shall be considered preferred or less preferred candidates for process termination by the Linux OOM
+ killer logic. See
+ <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
+ details.</para></listitem>
+ </varlistentry>
+
</variablelist>
<para>Check
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.kill</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>