What do you think this value of 60 means? Also, as I said, in extreme situations, when the system is right before invoking the OOM killer, swap is used regardless of `vm.swappiness` setting.
Some arbitrary number.
https://docs.kernel.org/admin-guide/sysctl/vm.html#swappines...
> At 0, the kernel will not initiate swap until the amount of free and file-backed pages is less than the high watermark in a zone.
I don't see a reason why the default shouldn't be 0 then on modern systems.
> I don't see a reason why the default shouldn't be 0 then on modern systems.
The zero value makes reclaim very unbalanced and is not appropriate for generic systems. This will cause the kernel to discard all the page cache, slowing down the system with uncached I/O, while keeping all unused anonymous pages in memory.
> If you care about latency, disable swap.