Re: [quicwg/base-drafts] Clarify text on pacing (#3667)

Martin Thomson <> Tue, 19 May 2020 00:57 UTC

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Date: Mon, 18 May 2020 17:57:12 -0700
From: Martin Thomson <>
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Subject: Re: [quicwg/base-drafts] Clarify text on pacing (#3667)
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@martinthomson commented on this pull request.

> @@ -908,12 +908,10 @@ Or, expressed as an inter-packet interval:
 interval = smoothed_rtt * packet_size / congestion_window / N
-Using a value for `N` that is small, but at least 1 (for example, 1.25) ensures
-that variations in round-trip time don't result in under-utilization of the
-congestion window.  Values of 'N' larger than 1 ultimately result in sending
-packets as acknowledgments are received rather than when timers fire, provided
-the congestion window is fully utilized and acknowledgments arrive at regular
+Using a value for N that is low, but at least 1 (for example, 1.25) ensures that
+variations in round-trip time don't result in under-utilization of the
+congestion window. Note that a higher N results in the inter-packet interval
+becoming smaller, and a large enough N defeats purpose of pacing.

becoming smaller, and a large enough N defeats the purpose of pacing.

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