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man: document ConditionMemory= + ConditionCPUs=

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Lennart Poettering 2019-03-18 17:47:13 +01:00
parent 754f719af2
commit 2b60d7ea54
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20
man/systemd.unit.xml
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@ -1002,6 +1002,8 @@
<term><varname>ConditionUser=</varname></term>
<term><varname>ConditionGroup=</varname></term>
<term><varname>ConditionControlGroupController=</varname></term>
<term><varname>ConditionMemory=</varname></term>
<term><varname>ConditionCPUs=</varname></term>
<!-- We do not document ConditionNull=
here, as it is not particularly
@ -1256,6 +1258,24 @@
<option>blkio</option>, <option>memory</option>,
<option>devices</option>, and <option>pids</option>.</para>
<para><varname>ConditionMemory=</varname> verifies if the specified amount of system memory is
available to the current system. Takes a memory size in bytes as argument, optionally prefixed with a
comparison operator <literal>&lt;</literal>, <literal>&lt;=</literal>, <literal>=</literal>,
<literal>!=</literal>, <literal>&gt;=</literal>, <literal>&gt;</literal>. On bare-metal systems
compares the amount of physical memory in the system with the specified size, adhering to the
specified comparison operator. In containers compares the amount of memory assigned to the container
instead.</para>
<para><varname>ConditionCPUs=</varname> verifies if the specified number of CPUs is available to the
current system. Takes a number of CPUs as argument, optionally prefixed with a comparison operator
<literal>&lt;</literal>, <literal>&lt;=</literal>, <literal>=</literal>, <literal>!=</literal>,
<literal>&gt;=</literal>, <literal>&gt;</literal>. Compares the number of CPUs in the CPU affinity mask
configured of the service manager itself with the specified number, adhering to the specified
comparision operator. On physical systems the number of CPUs in the affinity mask of the service
manager usually matches the number of physical CPUs, but in special and virtual environments might
differ. In particular, in containers the affinity mask usually matches the number of CPUs assigned to
the container and not the physically available ones.</para>
<para>If multiple conditions are specified, the unit will be
executed if all of them apply (i.e. a logical AND is applied).
Condition checks can be prefixed with a pipe symbol (|) in