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Tunes selected sysctl options in `/proc/sys/vm`, currently
[option]`dirty_ratio`, [option]`dirty_background_ratio`,
[option]`dirty_bytes`, and [option]`dirty_background_bytes`.
See https://docs.kernel.org/admin-guide/sysctl/vm.html for detailed
documentation of these options.
Additionaly enables or disables transparent huge pages depending on
the value of the [option]`transparent_hugepages` option. The option
can have one of three possible values: `always`, `madvise` and `never`.
.Disable transparent hugepages
====
----
[vm]
transparent_hugepages=never
----
====
The [option]`transparent_hugepage.defrag` option specifies the
defragmentation policy. Possible values for this option are `always`,
`defer`, `defer+madvise`, `madvise` and `never`. For a detailed
explanation of these values refer to
link:https://www.kernel.org/doc/Documentation/vm/transhuge.txt[Transparent Hugepage Support].
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