Re: [quicwg/base-drafts] A pacing algorithm (#3630)
Martin Thomson <notifications@github.com> Tue, 12 May 2020 23:15 UTC
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Date: Tue, 12 May 2020 16:15:18 -0700
From: Martin Thomson <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] A pacing algorithm (#3630)
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@martinthomson commented on this pull request. > +following relation for the total number of bytes sent over any interval: + +~~~ +sent@t[n] - sent@t[m] + <= N * congestion_window * (t[m] - t[n]) / smoothed_rtt + + min(10 * max_datagram_size, + max(2 * max_datagram_size, 14720)) +~~~ + +The inclusion of the factor, `N`, that increases the rate of sending is to +anticipate increases in sending rate as the congestion window expands. Sending +at a higher rate also avoids having scheduling delays reduce the send rate +below that allowed by the congestion controller. A value of 2 ensures that +pacing is unlikely to limit what is sent any more than the congestion +controller. + ```suggestion An endpoint that does not burst packets and has even spacing between packets might send packets spaced at intervals of: ~~~ inter-packet time = smoothed_rtt * packet_size / congestion_window / N ~~~ ``` > +The inclusion of the factor, `N`, that increases the rate of sending is to +anticipate increases in sending rate as the congestion window expands. Sending +at a higher rate also avoids having scheduling delays reduce the send rate +below that allowed by the congestion controller. A value of 2 ensures that +pacing is unlikely to limit what is sent any more than the congestion +controller. ```suggestion The inclusion of the factor, `N`, with a value of at least 1 increases the rate of sending. The value of `N` might be increased to avoid having scheduling delays reduce the send rate below that allowed by the congestion controller. ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/quicwg/base-drafts/pull/3630#pullrequestreview-410481829
- [quicwg/base-drafts] A pacing algorithm (#3630) Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… MikkelFJ
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… MikkelFJ
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… MikkelFJ
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Jana Iyengar
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Jana Iyengar
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Jana Iyengar
- Re: [quicwg/base-drafts] A pacing algorithm (#363… ianswett
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… ianswett
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… ianswett
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… Martin Thomson
- Re: [quicwg/base-drafts] A pacing algorithm (#363… ianswett
- Re: [quicwg/base-drafts] A pacing algorithm (#363… ianswett