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@ -20,36 +20,57 @@ Windows的Linux子系统测试在上周刚刚完成所有测试，并放出升
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这次Ubuntu/Bash on Windows和原生Ubuntu对比测试，采用开源软件Phoronix测试套件，完全自动化并可重复测试。
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First up was the SQLite embedded database benchmark. The out-of-the-box Ubuntu/Bash on Windows performance was quite slow, but when switching that 14.04 environment to 16.04 LTS, the performance was much faster. However, for this disk-heavy workload the native Ubuntu Linux installations were almost twice as fast as relying upon the Windows Subsystem for Linux.
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The CompileBench test profile as additional disk-focused workloads show that this is the particular subsystem really straining the Ubuntu performance atop Windows 10 with it being up to multiple times slower.
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Next up were some basic system memory speed tests with Stream.
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Strangely, the Stream memory benchmarks show better performance with Ubuntu on Windows than Ubuntu itself! This happened on both the 14.04 and 16.04 based environments that the Windows results came out faster.
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Next are more of the CPU-heavy tests,
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With the Dolfyn scientific test, the performance between Ubuntu on Windows and Ubuntu installed bare metal was actually quite close. With Ubuntu 16.04 the performance is slower on both platforms due to the newer GCC compiler regressing the performance.
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Fhourstones and John The Ripper show that the performance of Ubuntu running on Windows via the Windows Subsystem for Linux can be incredibly close to the bare metal Ubuntu Linux performance!
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The x264 results were another strange case similar to Stream where the best performance was actually with Ubuntu on Windows 10 via WSL!
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The timed compilation benchmarks were heavily in favor of the bare metal Ubuntu Linux installations outside of Windows. This is likely due to these large program compilations requiring plenty of disk reads and from the earlier disk-focused benchmarks showing that is the big area where the Windows Subsystem for Linux is slow.
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Many of our other common open-source benchmarks show that for the strictly CPU-focused tests, the Windows Subsystem for Linux is close -- or even matches -- the native Ubuntu Linux performance running on the actual hardware.
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These latest Windows Subsystem for Linux results are actually rather impressive. The big letdown is just the continued slow disk/file-system performance, but for CPU-bound workloads the results are very compelling. There's also the rare cases with x264 and Stream where the performance of the Ubuntu user-space on Windows appears to clearly outperform that of Ubuntu Linux running on the hardware by itself.
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Overall the experience was actually quite pleasant and haven't run into any other bugs or annoyances while running with Ubuntu/Bash on Windows. If you're interested in more Windows vs. Linux benchmarks, please consider voicing yourself as a Phoronix Premium subscriber.
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