The recent discussion on reference counting and barrier timing has got me interested in packet processing time. I realize there's a way to use "show runtime" along with knowledge of the arc a packet follows, but I'm curious if something more straight-forward has been attempted where packets are timestamped on ingress (or creation) and stats are collected on egress (transmission)?
I also have an unrelated interest in hooking into the graph immediate-post-transmission -- I'd like to adjust an input queue size only when the packet that enqueued on it is actually transmitted on the wire, and not just handed off downstream on the arc -- this would be a likely the same place packet stat collection might occur. :) Thanks, Chris.
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