Re: [hybi] SPDY protocol from google frame

[Roberto Peon <[e-mail]>]

All we know that, at Google, we see TCP retransmits which are seemingly
indicative of a 1% packet loss rate.

One of the things that we're trying to convince people to do is a
internet-wide study of packet loss. No-one really has a good model for
it. No-one really understands it beyond their little corner of the 'net..
and that isn't good enough. For instance, when packet loss occurs, is it
truly random? Or is it "correlated" (e.g. if you had 6 tcp connections to
the same host would they likely all drop packets at the same time). We
suspect that it is correlated.. but have no proof.

In any case, we'll start real world testing soon-- in the next few weeks
(certainly before the end of Q4) we'll have a Chromium dev-channel (i.e.
pre-beta) release out as well as some public facing machines at Google.
Thus, you'll be able to test against Google soon. Unfortunately, it will
likely only be Google for the immediate future :/, though I hope that others
will join in the experiment soon.

-=R

On Wed, Nov 18, 2009 at 2:23 AM, Thomson, Martin
<[e-mail]>wrote:

> The 11% speedup is probably more indicative of real world performance.  I
> note that 1% packet loss is quite high for the sorts of connections
> simulated in the tests.  TCP doesn't like those sorts of loss rates,
> especially for larger payloads.
>
> > -----Original Message-----
> > From: Mike Dierken [mailto:[e-mail]]
> > Sent: Tuesday, 17 November 2009 12:40 PM
> > To: Roberto Peon
> > Cc: Thomson, Martin; [e-mail]
> > Subject: Re: [hybi] SPDY protocol from google frame
> >
> > Was the reduced page load time due to fewer TCP packets needing to be
> > exchanged (due to smaller HTTP request and response headers)?
> >
> > Mike
> >
> > On Thu, Nov 12, 2009 at 7:00 PM, Roberto Peon <[e-mail]> wrote:
> > > http://sites.google.com/a/chromium.org/dev/spdy/spdy-whitepaper
>
>
>