Re: [quicwg/base-drafts] Add more context and text around ACK frequency (#3706)
Jana Iyengar <notifications@github.com> Mon, 01 June 2020 02:35 UTC
Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 525AE3A0AEA for <quic-issues@ietfa.amsl.com>; Sun, 31 May 2020 19:35:09 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.697
X-Spam-Level:
X-Spam-Status: No, score=-1.697 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_28=1.404, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id otb_NGaUpJPc for <quic-issues@ietfa.amsl.com>; Sun, 31 May 2020 19:35:08 -0700 (PDT)
Received: from out-27.smtp.github.com (out-27.smtp.github.com [192.30.252.210]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id ED2893A0AE8 for <quic-issues@ietf.org>; Sun, 31 May 2020 19:35:07 -0700 (PDT)
Received: from github-lowworker-39b4a70.va3-iad.github.net (github-lowworker-39b4a70.va3-iad.github.net [10.48.16.66]) by smtp.github.com (Postfix) with ESMTP id 3BAD6E0133 for <quic-issues@ietf.org>; Sun, 31 May 2020 19:35:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1590978907; bh=fWWIAmXocOgwSedhjZWkNlUyBxLyaJnLz4TRRdeHC0Y=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=GWXqtMF4dHFdY6uNzhFqVjslbMfy5RCB0NVOvr1en58Chwz4F0U9ymub6jufHO8+x KTkjnenM9i8vVrVvOCoaB0m1HKQPSZpvUXKwVFijemFfvom4AWom8OPURByPzt7XzQ ldJUT+/BkHqPxeMKfB8NkhyAfKM0gOBe1p6wESmM=
Date: Sun, 31 May 2020 19:35:07 -0700
From: Jana Iyengar <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJKZFADH3HFIMUHUE2RF44BFFXEVBNHHCKUVTR4@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/3706/review/421564976@github.com>
In-Reply-To: <quicwg/base-drafts/pull/3706@github.com>
References: <quicwg/base-drafts/pull/3706@github.com>
Subject: Re: [quicwg/base-drafts] Add more context and text around ACK frequency (#3706)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5ed4695b2ba87_5bb73fbd0c2cd9644199252"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: janaiyengar
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/KL3QPSWkxi2g4g40dC9FAXUdpSg>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 01 Jun 2020 02:35:09 -0000
@janaiyengar commented on this pull request. > -limits on how frequently they can be sent. An endpoint MUST NOT send more than -one ACK-frame-only packet in response to receiving an ack-eliciting packet. An -endpoint MUST NOT send a non-ack-eliciting packet in response to a -non-ack-eliciting packet, even if there are packet gaps which precede the -received packet. Limiting ACK frames avoids an infinite feedback loop of -acknowledgements, which could prevent the connection from ever becoming idle. -However, the endpoint acknowledges non-ACK-eliciting packets when it sends an -ACK frame. +### Acknowledgement Frequency + +A receiver determines how frequently to send acknowledgements in response to +ack-eliciting packets. This determination involves a tradeoff. + +Endpoints rely on timely acknowledgment to detect loss; see Section 5 of +{{QUIC-RECOVERY}}. Window-based congestion controllers, such as the one in +Section 6 of {{QUIC-RECOVERY}}, rely on acknowledgments to manage their sending It's still quite accurate, IMO. Ultimately, increasing the congestion window increases the sending rate. That is the higher order point here -- that reducing ack frequency reduces the throughput of the sender. -- 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/3706#discussion_r433018697
- [quicwg/base-drafts] Add more context and text ar… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Martin Thomson
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Martin Thomson
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… ianswett
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Kazuho Oku
- Re: [quicwg/base-drafts] Add more context and tex… Martin Thomson
- Re: [quicwg/base-drafts] Add more context and tex… ianswett
- Re: [quicwg/base-drafts] Add more context and tex… Martin Thomson
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Marten Seemann
- Re: [quicwg/base-drafts] Add more context and tex… ianswett
- Re: [quicwg/base-drafts] Add more context and tex… ianswett
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar
- Re: [quicwg/base-drafts] Add more context and tex… ianswett
- Re: [quicwg/base-drafts] Add more context and tex… Jana Iyengar