Linux Proposed Cache Aware Scheduling Benchmarks Show Big Potential on AMD Turin

6 months ago

Linux kernel engineers are working on cache-aware scheduling to improve performance on modern CPUs with multiple caches.
Cache-aware scheduling aggregates tasks likely to share resources into the same cache domain for better cache locality.
Recent patches show significant improvements, including a 44% time reduction in some benchmarks on Intel Xeon and AMD EPYC processors.
Testing on AMD EPYC 9965 (192-core) shows promising results with cache-aware scheduling enabled.
Cache-aware scheduling is not beneficial for all workloads, especially those with high thread counts exceeding physical cores in LLC.
Default settings were used for initial testing, with potential for further tuning via sysfs.

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