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by lzaf
237 days ago
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On a similar vein some time ago I had written a small toy lib that emulates the os.File interface for nmap backed files: https://github.com/zaf/yammap,
It even handled bus errors without panicking: https://github.com/zaf/yammap/blob/186f714343906bb9304ad5f30... Read and write performance was usually better especially with larger write sizes.
Compared to os.File: ~/src/yammap$ go test -benchtime=4s -bench .
goos: linux
goarch: amd64
pkg: github.com/zaf/yammap
cpu: AMD Ryzen 9 5900X 12-Core Processor
BenchmarkWrite-24 29085 164744 ns/op 25459.52 MB/s
BenchmarkOSWrite-24 22204 215131 ns/op 19496.54 MB/s
BenchmarkRead-24 29113 166820 ns/op 25142.72 MB/s
BenchmarkOSRead-24 27451 172685 ns/op 24288.69 MB/s
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