hardware-counters
Hardware Performance Counters
Purpose
Guide agents through hardware performance counter analysis: collecting PMU events with perf stat -e, using the PAPI library for portable counter access, interpreting cache miss rates and branch misprediction ratios, computing IPC, and correlating events to source lines with perf annotate.
Triggers
- "How do I measure cache miss rate with perf?"
- "How do I count branch mispredictions?"
- "How do I compute IPC (instructions per clock) with perf?"
- "How do I use the PAPI library for hardware counters?"
- "How do I see which source lines cause the most cache misses?"
- "How do I measure memory bandwidth with performance counters?"
Workflow
1. perf stat — basic counter collection
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