[quicwg/base-drafts] recovery: initial reordering threshold (#3389)

mirjak <notifications@github.com> Thu, 23 January 2020 11:17 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 56E9412001E for <quic-issues@ietfa.amsl.com>; Thu, 23 Jan 2020 03:17:23 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.382
X-Spam-Level:
X-Spam-Status: No, score=-1.382 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, HTML_IMAGE_ONLY_24=1.618, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=no 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 xdyWNeYwOIFd for <quic-issues@ietfa.amsl.com>; Thu, 23 Jan 2020 03:17:22 -0800 (PST)
Received: from out-26.smtp.github.com (out-26.smtp.github.com [192.30.252.209]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 26665120024 for <quic-issues@ietf.org>; Thu, 23 Jan 2020 03:17:22 -0800 (PST)
Date: Thu, 23 Jan 2020 03:17:21 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1579778241; bh=HZeg9eVeeagANaD+RUVaLkgssYCx2HNenhvpjMIb+1k=; h=Date:From:Reply-To:To:Cc:Subject:List-ID:List-Archive:List-Post: List-Unsubscribe:From; b=h7bu0cQJ46B2JSXWpTdQPuTD84dgr7cfyifLgQxjmYz7H29bZV4/SblBQ+M9XPEYE j6edH+0PGIswZqBBceltSIBfm4lE2ZQUCNSbJvzyczOiekbam7oCftuz9REq604lhW JDVbgx/YuRZmccrhuBZredZgQ1gfpRIb+e5+puzE=
From: mirjak <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJKYUB2D2AINWZWM63FF4G2ZUDEVBNHHCCBWNTU@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/issues/3389@github.com>
Subject: [quicwg/base-drafts] recovery: initial reordering threshold (#3389)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5e2980c172f4d_5ef13fb09eacd9681419a8"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: mirjak
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/cklTJZfnEXad0w3NZnSWKvAdKxw>
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: Thu, 23 Jan 2020 11:17:23 -0000

The doc says:
"Implementations that detect spurious retransmissions and increase the
   reordering threshold in packets or time MAY choose to start with
   smaller initial reordering thresholds to minimize recovery latency."

For the packet based threshold does that this say that a smaller initial value than 3 packets could be used? Is that really sensible?

And for a time based threshold I don't really understand what this means because the threshold is anyway calculated dynamically based on the RTT, so there is no real initial value. I guess there was a time when the threshold was a fixed value and this sentence is maybe a left-over?

-- 
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/issues/3389