The latest iteration of Intel’s cluster scheduling support for x86 hybrid P/E-core CPUs were posted on Friday in seeking to enhance the performance of some workloads under Linux when running on recent Intel Core processors.
Earlier this year Intel posted a new round of Linux cluster scheduling patches after their original implementation I found to be causing regressions and hurting performance at the time with Alder Lake when their original cluster scheduling work was being tackled in 2021. With the 2023 incarnation things appear to be in much better shape.
In June were the v2 patches and on Friday succeeded by a third version. This newest version simplifies how the sibling imbalance is computed and removes the asym packing bias, rounding is added to the sibling imbalance, and some basic changes.
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