Advanced
Assembly Language
Q70 / 100
What are hardware performance counters?
Correct! Well done.
Incorrect.
The correct answer is B) CPU registers that count low-level events (cache misses, branch mispredictions, instructions retired) for performance profiling
B
Correct Answer
CPU registers that count low-level events (cache misses, branch mispredictions, instructions retired) for performance profiling
Explanation
PMU (Performance Monitoring Unit) counters (RDPMC/RDTSC) track L1 cache misses, branch mispredictions, IPC, etc. Tools like perf and Intel VTune use them.
Progress
70/100