Cycles of 0 Ports Utilized

Metric Description

This metric represents a fraction of cycles with no uOps executed by the CPU on any execution port. Long-latency instructions like divides may contribute to this metric.

Possible Issues

CPU executed no uOps on any execution port during a significant fraction of cycles. Long-latency instructions like divides may contribute to this issue. Check the Assembly view and Appendix C in the Optimization Guide to identify instructions with 5 or more cycles latency.

For more complete information about compiler optimizations, see our Optimization Notice.
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