Bluish Coder

Programming Languages, Martials Arts and Computers. The Weblog of Chris Double.


2006-03-10

Erlang SMP Benchmarks

Joe Armstrong has started a weblog and on it he has posted results of some testing of the Erlang SMP snapshot.

Program 1 spawned N (typically 1000) processes on 4 processors. Each process then pings all the other processes. This an 3.6 times faster on 4 CPUs than on a single CPU.

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Program 2 is a SIP stack - this ran 1.8 times faster on 4 processors than on 1 processor.

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These result are pretty good - to start with the Erlang system is unoptimized, as is the application. Despite this fact the application runs almost twice as fast on a four CPU system as it ran on a single CPU system.

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