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AMD Ryzen 9 3900X cross-platform benchmarking shows the Windows 10 scheduler finally catching up to that of Linux

AMD Ryzen 9 3900X performs comparatively better in Ubuntu, but Windows 10 has finally caught up. (Source: Nsane Forums)
AMD Ryzen 9 3900X performs comparatively better in Ubuntu, but Windows 10 has finally caught up. (Source: Nsane Forums)
Comparative benchmarks between AMD Ryzen 9 3900X systems running Windows 10 1903 and Ubuntu 18.04.2 LTS show that Microsoft's work in optimizing the OS for MCM CPUs such as Ryzen has paid off. Although Linux does have an overall lead, the scheduler improvements in the latest Windows version have managed to narrow the performance gap significantly.
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AMD initially denied any issues with the Windows scheduler during launch of the 1st gen Ryzens. However,  the company said during the Ryzen 3rd gen launch that Windows 10 version 1903 brings in better topology awareness, improved thread scheduling, and faster clock ramping that should help better utilizing the MCM design of the new chips. Phoronix decided to compare the performance of the 12C/24T Ryzen 9 3900X in Windows 10 1903 and Ubuntu 18.04.2 LTS to see if things have really improved.

Phoronix's test bench comprised of an AMD Ryzen 9 3900X running at stock speeds on an Asus ROG Crosshair VIII Hero Wi-Fi motherboard, 2x 8 GB of DDR4-3600 RAM, a Corsair Force MP600 PCIe Gen4 SSD, and AMD Radeon RX 560 graphics.  

We see that both the Windows 10 1903 and Ubuntu 18.04.2 LTS systems were showing very close performance figures in most benchmarks. While some of the tests such as SVT-AVI1, OpenMP-threaded image editing, and LLVM compilation seemed to favor Linux, other benchmarks such as 7-Zip and FLAC audio encoding showed a significantly narrowed performance gap with Windows 10 1903 showing good leads in FFmpeg tests. 

IndigoBench, the test that spawned the whole scheduler debate, still seems to run faster on Linux as do other CPU-based rendering tests such as Blender 2.79. The gap is considerably narrow this time, though. Geekbench, too, seemed to favor Linux albeit by a small margin. Windows, however, managed to lead in browser benchmarks. 

Overall, we see that Ubuntu managed an 8% lead over Windows 10 in CPU-based tests. The important takeaway from these results is that Windows 10 has finally managed to shrink the performance deficit by good measure when compared to Linux thanks to Ryzen-specific improvements in version 1903. It will be interesting to see how the upcoming Theadripper 3000-series with even higher core counts would fare in these tests.

Check out all the test scores in the Source link below.

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Vaidyanathan Subramaniam
Vaidyanathan Subramaniam - Managing Editor - 1340 articles published on Notebookcheck since 2012
Though a cell and molecular biologist by training, I have been drawn towards computers from a very young age ever since I got my first PC in 1998. My passion for technology grew quite exponentially with the times, and it has been an incredible experience from being a much solicited source for tech advice and troubleshooting among family and friends to joining Notebookcheck in 2017 as a professional tech journalist. Now, I am a Lead Editor at Notebookcheck covering news and reviews encompassing a wide gamut of the technology landscape for Indian and global audiences. When I am not hunting for the next big story or taking complex measurements for reviews, you can find me unwinding to a nice read, listening to some soulful music, or trying out a new game.
contact me via: @Geeky_Vaidy
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2019 07 > AMD Ryzen 9 3900X cross-platform benchmarking shows the Windows 10 scheduler finally catching up to that of Linux
Vaidyanathan Subramaniam, 2019-08- 3 (Update: 2019-08- 3)