Date: Sun, 25 Jun 1995 13:41:28 -0500 (CDT) From: Peter da Silva <peter@bonkers.taronga.com> To: dennis@et.htp.com (dennis) Cc: phk@freefall.cdrom.com, freebsd-hackers@freebsd.org Subject: Re: FreeBSD as a router Message-ID: <199506251841.NAA15148@bonkers.taronga.com> In-Reply-To: <199506251650.MAA26983@mail.htp.com> from "dennis" at Jun 25, 95 12:50:53 pm
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> are starting to do cell switching). This is also why when you chose an > internet provider make sure that your provider has high-speed connectivity, > because a 56k line to a router with a 56k connection only yields 28k to the > "real" net. You're still confusing latency with throughput. Even on a single connection: interface 1 interface 2 packet 1 comes in idle packet 2 comes in packet 1 comes out packet 3 comes in packet 2 comes out ... packet N comes in packet N-1 comes out idle packet N comes out Latency, t(packet). Total elapsed time, t = t(packet)*(N+1). Total throughput, T = T(interface)*(N/(N+1)). So, for a single packet, thoughput is halved. For an FTP session involving 10,000 packets, throughput is reduced by 1/10001. Latency remains t(packet).
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