Software Tuning, Performance Optimization & Platform Monitoring
Discussion around monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform monitoring
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Profiling With Intel VTune Amplifier

Divino_C_
New Contributor I
108 Views

Why sometimes the "CPU Time by Utilization" is annotated in the function name istead of the function's instructions?
Also, if I sum up the CPU Time of all instructions from the function the total does not match the value attributed in the function name.

What is the effect of the "Collet Stacks" in the Lightweight Hotspot analysis? When I collect with this option enabled the results
tell me that the caller is the hotspot but when I profile with it disable it tells me that the callee is the hotspot, which one is correct?

When should I use lightweight hotspot analysis instead of hotspot analysis.

I use ubuntu 12.04 on Intel i7-3630QM.

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2 Replies
Patrick_F_Intel1
Employee
108 Views

Hello Divino,

Can you please post this to the Intel VTune forums? You will get quicker, more accurate responses.

See http://software.intel.com/en-us/forums/intel-vtune-amplifier-xe-and-vtune-performance-analyzer

I'll delete this posting shortly.

Pat

Divino_C_
New Contributor I
108 Views

Surely, 

thanks Pat.

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