Okay, why does `swapoff` exist on Linux? It's completely useless as far as I can tell. It's been running for 24h to swap in like 1.5GB of used swap or so, on a largely idle server with >32GB free RAM. How can it be *this* hilariously inefficient?
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Replying to @marcan42
The kernel has supported memory hotplugging for more than 10 years, so instead of bothering with swap, just stroll by your local hardware store and get an additional DIMM…
https://www.kernel.org/doc/html/latest/admin-guide/mm/memory-hotplug.html …2 replies 0 retweets 1 like -
Replying to @srslypascal @marcan42
Does the board also have to support hotplugging? I'd be so paranoid to pull out a DIMM while a machine is running.
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Replying to @mikeym0p @srslypascal
Obviously. Basically nothing but big iron supports that kind of stuff. As far as I know the only common use case for memory hotplug is for VMs.
10:17 AM - 6 Jul 2019
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