IETF Logo Mail Archive

Re: [quicwg/base-drafts] Text proposal on user land warning about lower layer overhead to addr… (#1036)

Martin Thomson <notifications@github.com> Thu, 04 January 2018 22:39 UTC

Return-Path: <bounces+848413-a050-quic-issues=ietf.org@sgmail.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 AF284126E3A for <quic-issues@ietfa.amsl.com>; Thu, 4 Jan 2018 14:39:14 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.03
X-Spam-Level:
X-Spam-Status: No, score=-2.03 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] 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 vukrUjrt-8rT for <quic-issues@ietfa.amsl.com>; Thu, 4 Jan 2018 14:39:13 -0800 (PST)
Received: from o7.sgmail.github.com (o7.sgmail.github.com [167.89.101.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0998F124BAC for <quic-issues@ietf.org>; Thu, 4 Jan 2018 14:39:12 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=github.com; h=from:reply-to:to:cc:in-reply-to:references:subject:mime-version:content-type:content-transfer-encoding:list-id:list-archive:list-post:list-unsubscribe; s=s20150108; bh=B05fyEdktrJeEHNCNx87FbzG9XA=; b=q/ysRaJRu4s0vrru PKi0I1Jg0TQNA3gMyKPSKEN1cwc1Ms0dptXIJZbrrHci3NkPOtqkDG2rptExadty PhTyChyfPtMrN0iqDSDhFWEl7FNQNmpQYokR7zT/ig+Ljv7wEChNsp7ZFvqmNiuS w6JmlZ2KuaDcmoXekhQqAz/k0I8=
Received: by filter0523p1mdw1.sendgrid.net with SMTP id filter0523p1mdw1-22286-5A4EAD0F-1D 2018-01-04 22:39:11.91402649 +0000 UTC
Received: from github-smtp2b-ext-cp1-prd.iad.github.net (github-smtp2b-ext-cp1-prd.iad.github.net [192.30.253.17]) by ismtpd0005p1iad1.sendgrid.net (SG) with ESMTP id cEgOARW7R-m9PP5kejUlDA for <quic-issues@ietf.org>; Thu, 04 Jan 2018 22:39:11.820 +0000 (UTC)
Date: Thu, 04 Jan 2018 22:39:12 +0000
From: Martin Thomson <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+0166e4ab66e280518ca7616cc5cc55082a536217b12adb0292cf0000000116666f0f92a169ce110b3aac@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/1036/c355419540@github.com>
In-Reply-To: <quicwg/base-drafts/pull/1036@github.com>
References: <quicwg/base-drafts/pull/1036@github.com>
Subject: Re: [quicwg/base-drafts] Text proposal on user land warning about lower layer overhead to addr… (#1036)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5a4ead0fb5367_681e3ff59804ef341285e7"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: martinthomson
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
X-SG-EID: l64QuQ2uJCcEyUykJbxN122A6QRmEpucztpreh3Pak1RlqU436vIZ7TuEf1PL7PkL4gTE5RmhUlfw1 DWPWJ/joui2fHexiOA3GLJugbGv+mTqgTbShWc9msgySX318b/Ze+v9DLpr/6X9b8M0kHnhygecMox NsIuXysWllM1fiRWKlcA9W3bm0hXPbl73yAwGJPxnG7y08rjEXiSX5hmpXkc9fro+tANpL4R/+GVQ2 M=
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/UnP7rXxC5p6EQBGqxMX-D94WQs0>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.22
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, 04 Jan 2018 22:39:15 -0000

I don't think that this is specific to user space implementations.  There are two general classes of concern for user space implementations: timing and MTU.  Neither of these are special enough to warrant text (in my opinion).  In all cases, there are things that lowers layers of the stack might do to degrade service, either by adding delays or encapsulation.  Something like TURN is particularly annoying because the overheads can change over time, but it isn't all that different to a routing change causing packets to be sent on a path with a different MTU (on the contrary, it's actually more predictable).

If the intent is to say that you get better performance if you know more about lower layers of the stack, that is a truism.


-- 
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/1036#issuecomment-355419540

v2.27.8 | Report a Bug | By Email | System Status