Profile Meters

• Time-sliding window (TSW) tagger

• TSW provides a smooth estimate of the TCP sending rate over a period of time

• Tag packets as “out” once estimated average rate exceeds the target rate

• TSW remembers a window length worth of past history

• Approach 1:

- If average rate exceeds target rate, tag packets as “out” with P = (avgrate - target)/target

- Otherwise, tag packets as “in”

• Approach 2 (used later):

- Window length in the order of an RTT (short history)

- Start tagging packets as “out” once peak of TCP sawtooth exceeds 1.33 target rate

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