by Darius Kazemi, August 15 2019

In 2019 I'm reading one RFC a day in chronological order starting from the very first one. More on this project here. There is a table of contents for all my RFC posts.

Transfer speed

RFC-227 is titled “Data Transfer Rates (RAND/UCLA)”. It's by Heafner and Harslem of RAND and dated September 17, 1971.

The technical content

RAND has been using the Remote Job Service at UCLA. This RFC contains information on the speed of the RAND/UCLA connection for the service. They seem to be getting anywhere from 8-16 kbps sending to UCLA, and 14-19 kbps receiving.

They note that transfering data in 10x larger block sizes can result in a 2x speed improvement.


Their network speed in 1971 was about equivalent to what I used to get on my shitty dialup connection in 1998.

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About me

I'm Darius Kazemi. I'm an independent technologist and artist. I do a lot of work on the decentralized web with ActivityPub, including a Node.js reference implementation, an RSS-to-ActivityPub converter, and a fork of Mastodon, called Hometown. You can support my work via my Patreon.