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cgroup: docs: Mention unbounded protection for memory.{low,min}

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I got asked why Memory{Low,Min} don't allow "infinity". They do, but the
docs don't say that like they already do for Memory{High,Max}.
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Chris Down 2019-09-30 14:23:32 +01:00
parent 28e68bb235
commit b62087d4d0
1 changed files with 6 additions and 2 deletions
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8
man/systemd.resource-control.xml
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@ -269,7 +269,9 @@
<para>Takes a memory size in bytes. If the value is suffixed with K, M, G or T, the specified memory size is <para>Takes a memory size in bytes. If the value is suffixed with K, M, G or T, the specified memory size is
parsed as Kilobytes, Megabytes, Gigabytes, or Terabytes (with the base 1024), respectively. Alternatively, a parsed as Kilobytes, Megabytes, Gigabytes, or Terabytes (with the base 1024), respectively. Alternatively, a
percentage value may be specified, which is taken relative to the installed physical memory on the percentage value may be specified, which is taken relative to the installed physical memory on the
system. This controls the <literal>memory.min</literal> control group attribute. For details about this system. If assigned the special value <literal>infinity</literal>, all available memory is protected, which may be
useful in order to always inherit all of the protection afforded by ancestors.
This controls the <literal>memory.min</literal> control group attribute. For details about this
control group attribute, see <ulink control group attribute, see <ulink
url="https://www.kernel.org/doc/Documentation/cgroup-v2.txt">cgroup-v2.txt</ulink>.</para> url="https://www.kernel.org/doc/Documentation/cgroup-v2.txt">cgroup-v2.txt</ulink>.</para>
@ -293,7 +295,9 @@
<para>Takes a memory size in bytes. If the value is suffixed with K, M, G or T, the specified memory size is <para>Takes a memory size in bytes. If the value is suffixed with K, M, G or T, the specified memory size is
parsed as Kilobytes, Megabytes, Gigabytes, or Terabytes (with the base 1024), respectively. Alternatively, a parsed as Kilobytes, Megabytes, Gigabytes, or Terabytes (with the base 1024), respectively. Alternatively, a
percentage value may be specified, which is taken relative to the installed physical memory on the percentage value may be specified, which is taken relative to the installed physical memory on the
system. This controls the <literal>memory.low</literal> control group attribute. For details about this system. If assigned the special value <literal>infinity</literal>, all available memory is protected, which may be
useful in order to always inherit all of the protection afforded by ancestors.
This controls the <literal>memory.low</literal> control group attribute. For details about this
control group attribute, see <ulink control group attribute, see <ulink
url="https://www.kernel.org/doc/Documentation/cgroup-v2.txt">cgroup-v2.txt</ulink>.</para> url="https://www.kernel.org/doc/Documentation/cgroup-v2.txt">cgroup-v2.txt</ulink>.</para>