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You need to keep the connection alive, which means regular traffic, which means regularly sending data, which needs energy. More connections mean a) more traffic and b) unless you add some coordination mechanism, waking up the modem more often at random times, which is energy-intensive in itself.


> unless you add some coordination mechanism, waking up the modem more often at random times, which is energy-intensive in itself.

You just need to coalesce timer wakeups, which Linux supports already at the kernel level AFAICT.


I see, we need some coordination mechanism, and at that point, why not just use a central server to manage notifications :)




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