I've written an article about this topic. You can find it here : http://bit.ly/dM2acH
Petrucci From: g...@krypto.org Date: Sun, 28 Nov 2010 13:19:39 -0800 To: p2p-hackers@lists.zooko.com Subject: Re: [p2p-hackers] Google cheating on TCP slow start On Fri, Nov 26, 2010 at 5:42 PM, Ray Dillinger <b...@sonic.net> wrote: On Fri, 2010-11-26 at 15:59 -0700, David Barrett wrote: > Interesting article: > > http://blog.benstrong.com/2010/11/google-and-microsoft-cheat-on-slow.html > > I know a lot of people on this list are interested in this topic. But > I'm curious: if all sites were to start adopting *ahem* "alternative" > congestion strategies like this, would would the real-world > ramifications be? Indeed, it seems reasonable to assume that before > long it'll be a standard Apache option to do what Google does. > > Is this the end of the gentleman's internet? Should ISPs detect and > block/throttle this behavior -- essentially punishing (or overriding) > this type of behavior to re-establish normalcy? > > -david FWIW, I'm in favor of anything that reduces the number of roundtrips. While I see the rationale behind the slow-start algorithm in HTTP, the initial window size (and packet size) currently in use is ridiculous. Google is right that the IW size should be increased to (at least) 10 packets. I think I'd have gone for 32 actually. Someone should write an RFC to change it. Google and others are working on doing just that. http://www.google.com/research/pubs/pub36640.html This reflects the current reality that network latency has become by far the limiting factor on speed; it's not (or it's rarely) the size of data being transmitted that limits speed anymore; it's mainly the number of roundtrip delays. Skipping the slow-start algorithm all together as MS is doing is dubious at best, though. Bear _______________________________________________ p2p-hackers mailing list p2p-hackers@lists.zooko.com http://lists.zooko.com/mailman/listinfo/p2p-hackers _______________________________________________ p2p-hackers mailing list p2p-hackers@lists.zooko.com http://lists.zooko.com/mailman/listinfo/p2p-hackers
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