User Guide

Contents

Slow LEA Stalls

Metric Description

Some instructions have increased latency in Intel microarchitecture code name Sandy Bridge. Some LEA instructions, most notably three-operand LEA instructions, have increased latency and reduced dispatch port choices compared to other LEAs. This metric estimates the performance penalty of such slow LEAs.

Possible Issues

A significant proportion of cycles were spent handling slow LEA operations. Use the source view to discover the responsible instructions and try to avoid their use.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.