From: Jonathan Morton <chromatix99@gmail.com>
To: Narseo Vallina Rodriguez <narseo@icsi.berkeley.edu>
Cc: Kartik Agaram <ak@akkartik.com>,
Jordan Peacock <hewhocutsdown@gmail.com>,
bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] http/2
Date: Thu, 12 Mar 2015 21:42:45 +0200 [thread overview]
Message-ID: <CAJq5cE1UVuFRSYr6pyDeuph0bqLXtDoqus5FwgegnXT=3ytDdw@mail.gmail.com> (raw)
In-Reply-To: <CAJmR=QmZyWhU+DVTnuO+eTepb3dEJ9K++Lbzs3Z270eO=qbV_g@mail.gmail.com>
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I have sometimes noticed that the first packet after an idle period gets
additional latency on 3G. It's not much, maybe a quarter second. I'm not
worried about that, and it doesn't really cause any problems for me. I
expect that's the C-plane latency you're on about.
I was talking specifically about what happens when traffic is already
flowing - NOT idle - and then an additional, concurrent flow wants to start
up. If it goes to a different server, it's likely to start with a DNS
lookup, and resolvers tend to have remarkably short timeouts these days. A
few seconds induced latency, due to plain old bufferbloat, is enough to
make it fail.
- Jonathan Morton
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next prev parent reply other threads:[~2015-03-12 19:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 21:38 Kartik Agaram
2015-03-12 15:02 ` Jonathan Morton
2015-03-12 18:18 ` Narseo Vallina Rodriguez
2015-03-12 18:39 ` Jonathan Morton
2015-03-12 18:56 ` Narseo Vallina Rodriguez
2015-03-12 19:07 ` Jonathan Morton
2015-03-12 19:28 ` Narseo Vallina Rodriguez
2015-03-12 19:42 ` Jonathan Morton [this message]
2015-03-15 7:23 ` Mikael Abrahamsson
2015-03-12 18:05 ` Rich Brown
2015-03-15 7:13 ` David Lang
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