[e2e] Google seeks to tweak TCP

Jon Crowcroft Jon.Crowcroft at cl.cam.ac.uk
Tue Jan 24 03:01:27 PST 2012

well, perhaps - sometimes, i just wish TCP would simply get out of the way...

In missive <FD7B10366AE3794AB1EC5DE97A93A3733E2E70D2E4 at EXMB01CMS.surrey.ac.uk>, L.Wood at surrey.ac.uk typed:

 >>Can it be argued that google is attacking the wrong layer?
 >>TCP was not 'designed to deliver the Web's content.' TCP predates the web and http by decades. The internet and TCP user base is rather larger than google's user base of web customers.
 >>TCP was indeed designed to operate over 'a huge range of network types', and decreasing TCP RTO while increasing initial windows decreases TCP's tolerance of the range of networks it can support.
 >> I look forward to seeing the knock-on effects of decreasing the initial TCP RTO to one second (e.g. interactions with Mobile IP).
 >>Improved and more widely deployed HTTP persistence and pipelining would help; Google's SPDY at least nods to that. Those are germane to web use, and thus to Google's customers. Tweaking (improving?) TCP, not so much.
 >>Lloyd Wood
 >>From: end2end-interest-bounces at postel.org [end2end-interest-bounces at postel.org] On Behalf Of Craig Partridge [craig at aland.bbn.com]
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 >>Subject: [e2e] Google seeks to tweak TCP
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 >>From: PRIVACY Forum mailing list <privacy at vortex.com>
 >>Subject: [ PRIVACY Forum ]  Google: Let's Make TCP Faster
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 >>Google: Let's Make TCP Faster
 >>http://j.mp/Af4pgb (Google Code Blog)
 >>   "Transmission Control Protocol (TCP), the workhorse of the Internet, is
 >>    designed to deliver all the Web's content and operate over a huge
 >>    range of network types. To deliver content effectively, Web browsers
 >>    typically open several dozen parallel TCP connections ahead of making
 >>    actual requests. This strategy overcomes inherent TCP limitations but
 >>    results in high latency in many situations and is not scalable.  Our
 >>    research shows that the key to reducing latency is saving round trips.
 >>    We're experimenting with several improvements to TCP. Here's a summary
 >>    of some of our recommendations to make TCP faster ..."
 >> - - -
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 >> - Global Coalition for Transparent Internet Performance: http://www.gctip.=
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