== About == Gospeed is a library of micro-benchmarks for Go which evolved from the GoLightly project. It's main utility is for understanding and reasoning about the performance of Go programs. == Usage == Download the repo to a convenient location in your $GOPATH and then run the benchmarks with: go test -v -test.bench=".*" -test.timeout="60m" the sixty minute timeout may be necessary when running the entire benchmark suite or portions which make significant use of channels as the default aggregate test timeout is ten minutes.
Go micro-benchmarks for calculating the speed of language constructs
Owner
Eleanor McHugh
Presenter of Ruby and Go oddities, author of http://leanpub.com/GoNotebook, digital identity researcher and co-founder at @inidsol_uk.
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Comments
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OOM
I encountered a out of memory error when running the full benchmark. Obviously not your fault, but just wanted to give you a heads up.
It seems the memory overhead for creating a mere 500 000 go routines required more than my 4GB. I added another 1GB of swap just to test and it still crashed with an OOM.
The issue is reproducible on my machine by running the benchmarks with
$ go test -v -test.bench=".*"which would throw out the following when hitting the BaselineGo benchmark.
throw: out of memory (FixAlloc) goroutine 1 [chan receive]: testing.(*B).run(0xf8400730a0, 0x9732500000003, 0x7ff66dc53e10, 0x100000001) /home/simon/lib/golang/src/pkg/testing/benchmark.go:133 +0x49 testing.RunBenchmarks(0x400c00, 0x571850, 0x6700000067, 0x0) /home/simon/lib/golang/src/pkg/testing/benchmark.go:244 +0x4c1 testing.Main(0x400c00, 0x56c528, 0x100000001, 0x571850, 0x6700000067, ...) /home/simon/lib/golang/src/pkg/testing/testing.go:293 +0x180 main.main() /tmp/go-build113068524/github.com/feyeleanor/gospeed/_test/_testmain.go:249 +0x91 goroutine 2 [syscall]: created by runtime.main /home/simon/lib/golang/src/pkg/runtime/proc.c:221 goroutine 54 [running]: github.com/feyeleanor/gospeed.BenchmarkBaselineGo(0xf8400730a0, 0x41f661) /home/simon/src/github.com/feyeleanor/gospeed/baseline_benchmark_test.go:282 +0x37 testing.(*B).runN(0xf8400730a0, 0xf4240, 0x2710000f4240, 0xbabf2000babf2) /home/simon/lib/golang/src/pkg/testing/benchmark.go:84 +0x4e testing.(*B).launch(0xf8400730a0, 0x0) /home/simon/lib/golang/src/pkg/testing/benchmark.go:169 +0x147 created by testing.(*B).run /home/simon/lib/golang/src/pkg/testing/benchmark.go:132 +0x2cSimply running
$ go test -v -test.bench="BaselineGo"would not reproduce the error, but still consume a lot of memory.
P.S. Thanks for the nice benchmarks. Really helps when you'd like to know how the basic constructs of the language perform.
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