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Document reclaiming RAM by moving the image to swap

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Signed-off-by: Jonathon Anderson <janderson@ciq.com>
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Jonathon Anderson
2026-03-17 17:43:01 -06:00
parent efcd042131
commit 1fd8b65ebf
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userdocs/troubleshooting/troubleshooting.rst
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@@ -251,6 +251,11 @@ argument:
By default this is set to 50% of physical RAM. Note that tmpfs is required for
SELinux overlays since initramfs cannot preserve SELinux contexts.
Because the root is ``tmpfs``, the kernel can also swap cold image pages to a
local swap device, freeing RAM for running workloads. This does not apply to the
default ``initramfs`` root (single-stage boot), where pages are pinned in memory
and cannot be swapped. See :ref:`swap-and-image-memory` for a complete walkthrough.
.. note::
On some systems, it may also be necessary to include the ``noefi`` kernel