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fix: disable swap for executor_linux allocations #3958
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Is there a reason to remove this? Is it possible that in some rare situations it may work while the swappiness approach may not?
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Yes
1.) Writing
-1
to thememsw.limit_in_bytes
file does not disable swap. It sets the limit tounlimited
.https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
I'll update my commit message accordingly.
2.) It's sufficient to disable swapping via a single mechanism.
Not that I'm aware off. The swappiness value can be set when
CONFIG_MEMCG
is enabled and the cggroup memory fs is mounted.Both are also preconditions for enabling
CONFIG_MEMCG_SWAP_ENABLED
.