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Go vs Java WordSorter comparison. Faster and less LOC in Golang.

https://github.com/Skinney/WordSorter

by jemeshsu • 14 years ago

3 2 14 years ago

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st3fan2• 14 years ago

The Go version does not compile. It fails with:

main.go:11:5: import "wordsort": cannot find package

st3fan2• 14 years ago

The problem with these two examples is that they are not doing the same thing.

The Go version limits the number of concurrent Go routines to the number of processors.

The Java version on the other hand spawns 128 threads that all get started simultaneously.

When I remove the concurrency limiting code from the Go version it runs on 1575ms instead of 750ms. (On an 1.8 GHz i7 MacBook Air)

The line in question is:

runtime.GOMAXPROCS(runtime.NumCPU())

Imagine what would happen if the Java code used a ExecutorService to limit the number of concurrent threads in a similar way.

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