net.IOCounters optimise

[Nyx2022]

Is your feature request related to a problem? Please describe.
i'm using net.IOCounters to calc upstream and downstream speed, so i will call net.IOCounters every second,but when i use pprof to watch the performance , i found net.IOCounters will cost a 22% memory ,the flame is like

Describe the solution you'd like
i wish you can optimise the func to use sync.pool or other techs to reduce memery cost

Describe alternatives you've considered
use sync.pool or other techs

Additional context