Re: [quicwg/base-drafts] SHOULD NOT include platform delay in ack delay (#2786)
ianswett <notifications@github.com> Fri, 14 June 2019 01:05 UTC
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Subject: Re: [quicwg/base-drafts] SHOULD NOT include platform delay in ack delay (#2786)
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ianswett commented on this pull request. > -delay for the largest acknowledged packet in the Ack Delay field of an ACK frame -(see Section 19.3 of {{QUIC-TRANSPORT}}). This allows the receiver of the ACK -to adjust for any host delays, which is important for delayed acknowledgements, -when estimating the path RTT. In certain deployments, a packet might be held in -the OS kernel or elsewhere on the host before being processed by the QUIC -stack. Where possible, an endpoint MAY include these delays when populating the -Ack Delay field in an ACK frame. +An endpoint measures the intentional delay between when a ACK-eliciting packet +is received and the corresponding acknowledgment is sent. The endpoint encodes +this delay for the largest acknowledged packet in the Ack Delay field of an ACK +frame (see Section 19.3 of {{QUIC-TRANSPORT}}). This allows the receiver of the +ACK to adjust for any intentional delays, which is important for delayed +acknowledgements, when estimating the path RTT. A packet might be held in the +OS kernel or elsewhere on the host before being processed. An endpoint +SHOULD NOT include these delays when populating the Ack Delay field in an ACK +frame. I added the word "unintentional" to clarify your point. Does that work? -- 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/2786#discussion_r293629352
- [quicwg/base-drafts] SHOULD NOT include platform … ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Nick Banks
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Martin Thomson
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Praveen Balasubramanian
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Praveen Balasubramanian
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Kazuho Oku
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Kazuho Oku
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Kazuho Oku
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Martin Thomson
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Nick Banks
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Nick Banks
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Kazuho Oku
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett
- Re: [quicwg/base-drafts] SHOULD NOT include platf… Nick Banks
- Re: [quicwg/base-drafts] SHOULD NOT include platf… ianswett