- <para>Note that setting
- <varname>KillUserProcesses=1</varname> will break tools
- like
- <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
-
- <para>Note that <varname>KillUserProcesses=1</varname>
- is a weaker version of
- <varname>kill-session-processes=1</varname> which may
- be configured per-service for
- <citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. The
- latter kills processes of a session as soon as it
- ends, the former kills processes as soon as the last
- session of the user ends.</para>
+ <varlistentry>
+ <term><varname>RuntimeDirectorySize=</varname></term>
+
+ <listitem><para>Sets the size limit on
+ the
+ <varname>$XDG_RUNTIME_DIR</varname>
+ runtime directory for each user who
+ logs in. Takes a size in bytes,
+ possibly suffixed with the usual K, G,
+ M, T suffixes, to the base 1024
+ (IEC). Alternatively, a percentage
+ suffixed by <literal>%</literal> may
+ be specified, which sets the size
+ limit relative to the amount of
+ physical RAM. Defaults to 10%. Note
+ that this size is a safety limit
+ only. As each runtime directory is a
+ tmpfs file system it will only consume
+ as much memory as it is filled up
+ to.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>RemoveIPC=</varname></term>
+
+ <listitem><para>Controls whether
+ System V and POSIX IPC objects
+ belonging to the user shall be removed
+ when she or he fully logs out. Takes a
+ boolean argument. If enabled the user
+ may not consume IPC resources after
+ the last of his sessions
+ terminated. This covers System V
+ semaphores, shared memory and message
+ queues, as well as POSIX shared memory
+ and message queues. Note that IPC
+ objects of the root user are excluded
+ from the effect of this
+ setting. Defaults to
+ on.</para></listitem>
+ </varlistentry>
+
+ </variablelist>