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core: drop some out-of-date references to cgroup settings

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This commit is contained in:
Lennart Poettering 2013-09-26 22:49:44 +02:00
parent c68ba912c3
commit 7ac807320a
6 changed files with 21 additions and 78 deletions
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36
man/systemd-cgtop.xml
View file

@ -73,30 +73,23 @@
only accounted for control groups in the
<literal>cpuacct</literal> hierarchy, memory usage
only for those in <literal>memory</literal> and disk
I/O usage for those in
<literal>blkio</literal>. <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
by default places all services in their own control
group in the <literal>cpuacct</literal> hierarchy, but
not in <literal>memory</literal> nor
<literal>blkio</literal>. If resource monitoring for
these resources is required, it is recommended to add
<literal>blkio</literal> and <literal>memory</literal>
to the <varname>DefaultControllers=</varname> setting
in <filename>/etc/systemd/system.conf</filename> (see
<citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details). Alternatively, it is possible to enable
resource accounting individually for services, by
making use of the <varname>ControlGroup=</varname>
option in the unit files (See
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
I/O usage for those in <literal>blkio</literal>. If
resource monitoring for these resources is required,
it is recommended to add the
<varname>CPUAccounting=1</varname>,
<varname>MemoryAccounting=1</varname> and
<varname>BlockIOAccounting=1</varname> settings in the
unit files in question (See
<citerefentry><refentrytitle>systemd.cgroup</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details).</para>
<para>To emphasize this: unless
<literal>blkio</literal> and <literal>memory</literal>
are enabled for the services in question with either
of the options suggested above no resource accounting
will be available for system services and the data shown
by <command>systemd-cgtop</command> will be
<literal>CPUAccounting=1</literal>,
<literal>MemoryAccounting=1</literal> and
<literal>BlockIOAccounting=1</literal> are enabled for
the services in question no resource accounting will
be available for system services and the data shown by
<command>systemd-cgtop</command> will be
incomplete.</para>
</refsect1>
@ -281,6 +274,7 @@
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-cgls</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.cgroup</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>top</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>

27
man/systemd-system.conf.xml
View file

@ -104,32 +104,7 @@
</varlistentry>
<varlistentry>
<term><varname>DefaultControllers=cpu</varname></term>
<listitem><para>Configures in which
control group hierarchies to create
per-service cgroups automatically, in
addition to the
<literal>name=systemd</literal> named
hierarchy. Defaults to
<literal>cpu</literal>. Takes a
space-separated list of controller
names. Pass the empty string to ensure
that systemd does not touch any
hierarchies but its own.</para>
<para>Note that the default value of
'cpu' will make realtime scheduling
unavailable to system services. See
<ulink
url="http://www.freedesktop.org/wiki/Software/systemd/MyServiceCantGetRealtime">My
Service Can't Get Realtime!</ulink>
for more
information.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>JoinControllers=cpu,cpuacct,cpuset net_cls,netprio</varname></term>
<term><varname>JoinControllers=cpu,cpuacct net_cls,netprio</varname></term>
<listitem><para>Configures controllers
that shall be mounted in a single

5
man/systemd.unit.xml
View file

@ -1241,7 +1241,10 @@
<row>
<entry><literal>%R</literal></entry>
<entry>Parent directory of the control group path where units are placed.</entry>
<entry>For system instances this usually resolves to <filename>/</filename>, except in containers, where this resolves to the container's root directory. This specifier is particularly useful in the <varname>ControlGroup=</varname> setting (see <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>).</entry>
<entry>For system instances this usually
resolves to <filename>/</filename>, except in
containers, where this resolves to the
container's root directory.</entry>
</row>
<row>
<entry><literal>%t</literal></entry>

27
src/core/dbus-manager.c
View file

@ -103,32 +103,6 @@
" <method name=\"ResetFailedUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"SetUnitControlGroup\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"group\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"UnsetUnitControlGroup\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"group\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"\n/>" \
" </method>\n" \
" <method name=\"GetUnitControlGroupAttribute\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"attribute\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"values\" type=\"as\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"SetUnitControlGroupAttribute\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"attribute\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"values\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"\n/>" \
" </method>\n" \
" <method name=\"UnsetUnitControlGroupAttributes\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"attribute\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"GetJob\">\n" \
" <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
@ -316,7 +290,6 @@
" <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RuntimeWatchdogUSec\" type=\"t\" access=\"readwrite\"/>\n" \

3
src/core/system.conf
View file

@ -17,10 +17,9 @@
#ShowStatus=yes
#CrashChVT=1
#CPUAffinity=1 2
#DefaultControllers=cpu
#DefaultStandardOutput=journal
#DefaultStandardError=inherit
#JoinControllers=cpu,cpuacct,cpuset net_cls,net_prio
#JoinControllers=cpu,cpuacct net_cls,net_prio
#RuntimeWatchdogSec=0
#ShutdownWatchdogSec=10min
#CapabilityBoundingSet=

1
src/core/user.conf
View file

@ -12,6 +12,5 @@
#LogTarget=console
#LogColor=yes
#LogLocation=no
#DefaultControllers=cpu
#DefaultStandardOutput=inherit
#DefaultStandardError=inherit