True Random Number Service

Buffer Level Statistics

RANDOM.ORG is a true random number service that generates randomness via atmospheric noise. This page gives recent buffer level statistics. Click on a graph for the full-size image. More graphs are available via the statistics browser.

2009-01-05	2009-01-06	2009-01-07

The graphs show the buffer history of the random number generator. The generator consists of several radios, each of which has its own sound card that picks up the atmospheric noise generated by that radio. Each radio also has its own buffer, which is continually filled up with randomness generated from that radio's noise. If the buffer level for a given radio is low, it means that radio is quite busy.

If RANDOM.ORG is running with more than one radio (this may vary), you will see several plots in each of the graphs. Each radio has its own name (e.g., hw0), and each plot is labelled with the name of the radio to which it belongs. The buffers that you see in the graphs are consolidated to one big buffer (not shown) from which incoming requests for randomness are served.