Intel’s Linux team is working on performance monitoring capabilities for the next-generation Arrow Lake and Lunar Lake CPUs. The team has integrated model-specific parts for these CPUs into the Linux 6.11 kernel. The new performance monitoring unit for these CPUs is similar to the previous generation Meteor Lake with some key differences, such as additional fixed counters for the E cores, updated PEBS data source format for the P cores, and new architectural performance monitoring features.
The new PMU (Performance Monitoring Unit) includes three fixed counters for the E cores to monitor performance, while the P cores now have a PEBS feature that records detailed information about branch instructions executed by the CPU. This allows for deeper analysis at the branch level to identify any potential bottlenecks or mispredictions. Although the patches may not introduce significant changes, they indicate a more efficient troubleshooting process with upcoming architectures.
The planned release of Linux 6.11 in September will enable Intel processors to leverage advanced capabilities. Lunar Lake CPUs are expected to launch in September, while the Arrow Lake lineup is set to arrive in October. Overall, these developments signify Intel’s focus on improving performance monitoring for its upcoming CPU architectures.
In summary, the Intel Linux team is enhancing performance monitoring capabilities for Arrow Lake and Lunar Lake CPUs by integrating model-specific parts into the Linux kernel. The PMU for these CPUs is similar to the previous generation Meteor Lake but includes enhancements like additional fixed counters and updated PEBS features. The upcoming release of Linux 6.11 will enable Intel processors to utilize these advanced capabilities, with Lunar Lake and Arrow Lake CPUs expected to launch in September and October, respectively. These developments highlight Intel’s commitment to optimizing performance monitoring for its future CPU architectures.
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