Percy Wegmann feaf4743da
cmd/derpprobe,prober: add ability to continuously probe bandwidth and track queuing delay
Setting the bw-interval to a negative value enables continuous bandwidth probing.
When probing bandwidth continuously, the prober also tracks packet transit times,
which can be used as a measure of queuing delay.

Updates tailscale/corp#24522

Signed-off-by: Percy Wegmann <percy@tailscale.com>
2024-11-25 09:29:49 -06:00
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