[Tmrg] Proposal to increase TCP initial CWND
krasnoj at gmx.at (Stefan Hirschmann) Tue, 20 July 2010 21:20 UTC
From: "krasnoj at gmx.at"
Date: Tue, 20 Jul 2010 23:20:59 +0200
Subject: [Tmrg] Proposal to increase TCP initial CWND
In-Reply-To: <AANLkTil937lyUzRvUtdqd2qdl9RN7AZ-Mo_cT-dtmqXz@mail.gmail.com>
References: <AANLkTil937lyUzRvUtdqd2qdl9RN7AZ-Mo_cT-dtmqXz@mail.gmail.com>
Message-ID: <4C46133B.2040402@gmx.at>
Lachlan Andrew wrote: > Greetings TMRG folk, > > [...] > The basic TMRG-related issue was: If a data centre changes a TCP > parameter for *its* flows, how can it estimate the degradation caused > to *other* flows sharing resources with these flows? Google is awash > with data, but it all shares the bias of coming from their data > centres. What models are appropriate to infer the impact on the > unmeasured flows? Just a thing I want to mention here. It is not only about this draft it is more general how we should model Slow-Start: My own ADSL connection has 1.7 Mb and uses a queue-size of max 110 packets (last mile router). So I believe the Google results, saying it is an improvement for my connection. But what is the message: "We sent less than the buffers of the routers can bear and it was faster." Even if they would sent the whole 70 KB at once (I think this is the maximum size of a Google search result) it would be faster, cause my "last mile" router can queue it. If I have a background traffic using most of the buffer, there will be lots of packet drops and the transmission will be slower. So the approach has to be: Make sure that there is packet drop else the results have no rational conclusion. Cheers Stefan
- [Tmrg] Proposal to increase TCP initial CWND Lachlan Andrew
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Lachlan Andrew
- [Tmrg] Proposal to increase TCP initial CWND SCHARF, Michael
- [Tmrg] Proposal to increase TCP initial CWND Aleksandar Milenkoski
- [Tmrg] Proposal to increase TCP initial CWND Lachlan Andrew
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Stefan Hirschmann
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Lachlan Andrew
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Stefan Hirschmann
- [Tmrg] Proposal to increase TCP initial CWND Stefan Hirschmann
- [Tmrg] Proposal to increase TCP initial CWND Fred Baker
- [Tmrg] Proposal to increase TCP initial CWND Yuchung Cheng
- [Tmrg] Proposal to increase TCP initial CWND Lachlan Andrew