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man: add note about operation without swap in systemd-oomd

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Anita Zhang 2021-06-09 21:55:38 -07:00 committed by Zbigniew Jędrzejewski-Szmek
parent 3c3335c714
commit c48bc311a5
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4
man/systemd-oomd.service.xml
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@ -60,7 +60,9 @@
Without swap, the system enters a livelocked state much more quickly and may prevent <command>systemd-oomd</command>
from responding in a reasonable amount of time. See
<ulink url="https://chrisdown.name/2018/01/02/in-defence-of-swap.html">"In defence of swap: common misconceptions"</ulink>
for more details on swap.</para>
for more details on swap. Any swap-based actions on systems without swap will be ignored. While
<command>systemd-oomd</command> can perform pressure-based actions on a system without swap, the pressure increases
will be more abrupt and may require more tuning to get the desired thresholds and behavior.</para>
<para>Be aware that if you intend to enable monitoring and actions on <filename>user.slice</filename>,
<filename>user-$UID.slice</filename>, or their ancestor cgroups, it is highly recommended that your programs be