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Linux 5.0 Kernel Performance Is Sliding In The Wrong Direction

Submitted by Rianne Schestowitz on Saturday 23rd of February 2019 01:15:07 AM Filed under
Graphics/Benchmarks

With the Linux 5.0 kernel performance approaching the finish line, the past few days I've been ramping up my tests of this new kernel in our benchmarking farm. Unfortunately, when looking at the results at a macro level it's pointing towards Linux 5.0 yielding lower performance than previous kernel releases.

I haven't spotted any workload yet yielding a catastrophic performance regression on Linux 5.0 compared to 4.20 and earlier, but in a lot of workloads the 5.0 kernel is running faintly slower than 4.20. At first I thought it was isolated to just a particular box or two, but as my testing has increased, it's happened on a variety of at least x86_64 Intel/AMD hardware tested so far.

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