[Feature Request] total swap used/free/max and swap-in/swap-out rate and alerting

[iafilius]

Impressed by the stats capabilities i might have overlooked one which i was looking for basically swap statistics

With that a Feature Request for that:

to able to see, and perhaps some alerts on swap status in general, more percise:

• total swap used/free/total avail
• swap-in and swap-out rate, and alerting or colorisation.

So in general i would like to see the (swap) numbers, and able to conclude if the system is running in a memory starvation situation or not

Thanks for considering