[AVTCORE] RTP circuit breaker + layered codecs

Colin Perkins <csp@csperkins.org> Mon, 10 November 2014 20:02 UTC

From: Colin Perkins <csp@csperkins.org>
Content-Type: text/plain; charset="windows-1252"
Content-Transfer-Encoding: quoted-printable
Message-Id: <86073376-7553-45B3-B748-44FE9270BA82@csperkins.org>
Date: Mon, 10 Nov 2014 20:00:20 +0000
To: "avt@ietf.org WG" <avt@ietf.org>
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
Archived-At: http://mailarchive.ietf.org/arch/msg/avt/PiWltisP87pxdr-2v83vRMzWXwo
Subject: [AVTCORE] RTP circuit breaker + layered codecs
Precedence: list

Hi,

Thanks for Varun for presenting.

There were a couple of comments around the new text in the draft for layered coding:

- Regarding the 10x reduction, as Jonathan Lennox said, this is intended to be approximate, so an 8x reduction would be a close enough. We can try to clarify this in the draft.

- There was comment that the text around layered coding is not dissimilar to the general recommendations. That’s true, except that we were trying to make it clear that a layered sender that receives a circuit breaker trigger for a particular layer doesn’t necessarily have to cease transmission for that layer, provided it makes the necessary reduction overall. The general recommendation could be interpreted as saying that if the base layer triggered the circuit breaker, then the base layer must cease transmission, hence making the entire layered flow useless. Of course, what’s wanted is for some of the higher layers to stop, reducing the overall rate but leaving the base running. I’m open to suggestions for how to clarify this.

Colin



-- 
Colin Perkins
https://csperkins.org/

[AVTCORE] RTP circuit breaker + layered codecs Colin Perkins