# `Sys.Mon.NetBw`
[🔗](https://github.com/harmont-dev/hyper/blob/main/lib/sys/mon/net_bw.ex#L1)

Monitors instantaneous network bandwidth (the soft beta_net_bw signal).

Samples cumulative rx+tx bytes across physical interfaces from `/proc/net/dev`
every 37 ms and differentiates them into bytes/sec via `Controls.Rate`
(the first read only establishes a baseline). The rate series is smoothed with a
20-second time constant. Readings are `Unit.Bandwidth`.

# `value`

```elixir
@spec value() :: Sys.Mon.Server.Reading.t()
```

The latest instantaneous + filtered network bandwidth (`Unit.Bandwidth` readings).

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*Consult [api-reference.md](api-reference.md) for complete listing*