M*N Message passing Benchmark

About

The MN exercise is a popular test to compare the message passing capability of a platform. Joe Armstrong’s book on Erlang: Software For a Concurrent World, has this exercise to write a benchmark that creates N processes in a ring and sends a message around the ring M times so that a total of NM messages get sent

This benchmark has been created to test the performance of this exercise in various languages

Compiling & Running the Java benchmark

• Navigate to the directory javamsg
• javac -d bin src\javamsg*.java
• java -Xms256m -Xmx2048m -Djdk.tracePinnedThreads=full -Djdk.trackAllThreads=true -cp c:\code\mnProcess\javamsg\bin javamsg.MsgPing n 257 m 3

Note : This tool has been tested using java 21 & requires the JDK to be in your current path

Compiling & Running the go benchmark

• Navigate to the directory go-process
• go build .
• goMnProcess.exe -n 257 -m 3

Note : This tool has been tested using go 1.2.4 and requires the go language compiler to be in your current path

Results

Processes = 2,00,000, Times = 30 Hardware = Intel 12700H 2.3 Ghz

• Java - 1200 MB 5-9% CPU - 50 - 60 secs
• Go - 1700 MB 5% CPU - 1.7 secs