It doesn't matter. Assuming the latency of the swap device is the
same as the filesystem device it cancels out. We're simply trying
to minimise the total amount of I/O.
> Having to play with tunables is not an ideal way to go,
> I hate to think that Andrew's (and others) work can go down
> the drain at the very next technology jump.
It's constant-access-time mass storage technology which will toss 20
years development down the gurgler. Top to bottom, everything is
designed to support the locality=bandwidth characteristics of spinning
disks.
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