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About the Statistical Profiling Extension

The Neoverse™ N1 core supports the Statistical Profiling Extension (SPE), which was introduced in Armv8.2. SPE provides a statistical view of the performance characteristics of executed instructions, which can be used by software writers to optimize their code for better performance.

This statistical view is provided by periodically capturing profiles of the characteristics of micro-operations as they are executed on the Neoverse N1 core, and writing those profiles to memory after the corresponding instruction has retired.

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