On an AZURE system there is a "local" device that is useful as swap.
It is, I believe, faster than regular network based storage, but it is
ephemeral, and may go away during a shutdown.
It is in some machines a bit small so we'd like to add a bit more for
But we would like the ephemeral local storage to be used first. Can
this be done at all? I can't see anything
The last time I checked all swap was used in some balanced way. (the
manual says so)
One solution is to have a small cron job that only creates the added
swap partition when the first one is (say) 70% full,
but it'd be nice if there were some less hackish way. Another would be
to occasionally wake up, and if the swap in use would all fit into the
device we would like to be used, we do a swapoff on the other and
force everything to be put on the fast drive.. but that sort of
defeats the purpose as it's doing extra work..
Has anyone done any work on adding priority to swap?
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