Language Bindings for Erlang Again (Opinion)

David Hopwood <>
Tue Jun 6 20:37:08 CEST 2006


Garry Hodgson wrote:
> Gordon Guthrie <> wrote:
> 
>>>How scaleable, realtime, is
>>>a large Erlang program? Where are the performance
>>>tests over 100m of cat5? I'll test it myself and then
>>>I'll know.
>>
>>Erlang runs the telephone system in the UK - all 1.7m sloc of it with 31ms 
>>downtime per year (yes 99.9999999% availability).
>>
>>The lesson of this is that Erlang 'only' gives you commodity, open-source, 
>>google scalability on comodity hardware. Apart from that it has little to 
>>offer ;->
> 
> does anyone have a pointer to some documentation about that?
> i'd like to beat some people over the head with it.

The problem with searching for "Erlang" in connection with telecoms is
Agner Krarup Erlang and the erlang unit, not to mention several companies
named after them.

However, the 1.7m SLOC and 31 ms downtime per year figures are for the
AXD 301 ATM switch, which is much easier to search on -- for example see
<http://www.ericsson.com/ericsson/press/archive/1999Q4/19991012-0501.html>

The whole UK telephone system of course involves much more code than that
switch.

-- 
David Hopwood <>





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