> From [email protected] Wed Aug 13 17:28:59 1997
> To: [email protected]
> Cc: [email protected], [email protected], [email protected]
> Subject: Re: HTTP 1.1 pipelining & persistent connections query
> Date: Wed, 13 Aug 1997 20:28:47 -0400
> From: Curtis Villamizar <[email protected]>
>
> > (from Touch):
> > We have seen, with 100ms RTT and 16 KB outstanding (1.3 Mbps end-to-end
> > BW), the TCP generate a burst of 12 packets at the line rate (10 Mbps
> > on the local LAN), rather than space the packets out.
> >
> > This will (and probably already does) cause loss at the routers
> > inbetween.
>
> (1.3 Mb/s * 0.1 sec) / 8 bit/byte => 16KB
That's where I got the end-to-end BW number, backwards.
> If the path is T1 or better it should have 16-32KB of buffering
> minimum. If the bottleneck is >T1 there should be much more
Yeah - FYI, we didn't optimize anything, just ran Netscape 4.x and
Apache out of the box. The fact is that there is a burst;
we can make that burst arbitrarily large with other tweaks -
running large-windows TCP (to exceed 64 KB windows), etc.
Joe
----------------------------------------------------------------------
Joe Touch - [email protected] http://www.isi.edu/~touch/
ISI / Project Leader, ATOMIC-2, LSAM http://www.isi.edu/atomic2/
USC / Research Assistant Prof. http://www.isi.edu/lsam/
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