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authorLennart Poettering <lennart@poettering.net>2013-07-19 19:16:47 +0200
committerLennart Poettering <lennart@poettering.net>2013-07-19 19:16:47 +0200
commit847ae0ae7f29e7bfb245d692409fc2948eab7d1d (patch)
treed2e7acc093b9367a18c3d07e48e00c2d501b5400 /man
parent9365b048c0c9f62ef7f696216ba049e6b4c2f2e5 (diff)
man: update documentation of slice units a bit
Diffstat (limited to 'man')
-rw-r--r--man/systemd.scope.xml2
-rw-r--r--man/systemd.slice.xml34
2 files changed, 29 insertions, 7 deletions
diff --git a/man/systemd.scope.xml b/man/systemd.scope.xml
index 1400f8f4b1..ff41c926f4 100644
--- a/man/systemd.scope.xml
+++ b/man/systemd.scope.xml
@@ -63,7 +63,7 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
processes on its own.</para>
<para>The main purpose of scope units is grouping worker processes
- of a system service for organization and resource management.</para>
+ of a system service for organization and for managing resources.</para>
<para><command>systemd-run <option>--scope</option></command> may
be used to easily launch a command in a new scope unit from the
diff --git a/man/systemd.slice.xml b/man/systemd.slice.xml
index 5376921689..7ddef85eec 100644
--- a/man/systemd.slice.xml
+++ b/man/systemd.slice.xml
@@ -55,14 +55,34 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
<title>Description</title>
<para>A unit configuration file whose name ends in
- <literal>.slice</literal> encodes information about a slice
- created by systemd to manage resources used by a certain group of
+ <literal>.slice</literal> encodes information about a slice which
+ is a concept for hierarchially managing resources of a group of
processes. This management is performed by creating a node in the
- control group tree. Those processes are part of different units,
- usually <literal>.service</literal> units (see
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
+ control group tree. Units that manage processes (primarilly scope
+ and service units) may be assigned to a specific slice. For each
+ slice certain resource limits may the be set, that apply to all
+ processes of all units contained in that slice. Slices are
+ organized hierarchially in a tree. The name of the slice encodes
+ the location in the tree. The name consists of a "-" separated
+ series of names, which describes the path to the slice from the
+ root slice. The root slice is named,
+ <filename>-.slice</filename>. Example:
+ <filename>foo-bar.slice</filename> is a slice that is located
+ within <filename>foo.slice</filename>, which in turn is located in
+ the root slice <filename>-.slice</filename>.
</para>
+ <para>By default service and scope units are placed in
+ <filename>system.slice</filename>, virtual machines and containers
+ registered with
+ <citerefentry><refentrytitle>systemd-machined</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ are found in <filename>machine.slice</filename>, and user sessions
+ handled by
+ <citerefentry><refentrytitle>systemd-logind</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ in <filename>user.slice</filename>. See
+ <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more information.</para>
+
<para>See
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for the common options of all unit configuration
@@ -92,7 +112,9 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.cgroup</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
+ <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
</para>
</refsect1>