User Guide



Set a percent of the target CPU/Wait time to display only the hottest program units that exceed this threshold.


The percent of target CPU/Wait time consumed by the program units displayed.
all program units.
Actions Modified
Use the
action-option to generate a performance detail report that focuses on program units that exceed the specified percentage of target CPU/Wait time. Functions below the specified threshold are filtered out, so your report includes just the hottest program units, and excludes those that are insignificant.
Linux*: Generate a Performance Detail report from the
Hotspots result that only includes functions that cumulatively account for 90% of target CPU time. Functions cumulatively representing less than 10% of target CPU time are excluded.

vtune -report perf-detail -r r001hs -cumulative-threshold-percent=90

Module Function CPU Time Cumulative Percent matrix algorithm_2 3.136 70.415 matrix algorithm_1 1.156 96.375
Windows*: Generate performance reports in
functions that account for 50% of the total difference. Positive and negative difference values are handled separately.

vtune -R perf -r r001hs -r r002hs -cumulative-threshold-percent=50

Module Function Result 1:CPU Time Result 2:CPU Time Difference:CPU Time Cumulative Percent matrix.exe algorithm_2 3.106 3.131 -0.025 100.000 Module Function Result 1:CPU Time Result 2:CPU Time Difference:CPU Time Cumulative Percent ntdll.dll KiFastSystemCallRet 0.012 0 0.012 39.956 ntdll.dll NtWaitForSingleObject 0.113 0.110 0.003 50.051

Product and Performance Information


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