User Guide

Contents

Overhead Time

Metric Description

Overhead time is CPU time spent on the overhead of known synchronization and threading libraries, such as system synchronization APIs, Intel TBB, and OpenMP.

Possible Issues

A significant portion of CPU time is spent in synchronization or threading overhead. Consider increasing task granularity or the scope of data synchronization.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804