VTune™ Amplifier XE Call Stack Pane
The call stack pane is displayed in viewpoints of analysis types that include stack data. It is displayed on the right side of the viewpoint (highlighted below in a gold box).
We have recently learned about various problems users are experiencing when attempting to use the power analysis capability of the VTune™ Amplifier XE 2013. For example, you may see one of the following messages:
- Error: Power Analysis is not supported on this platform.
- Unknown symbol "cpufreq_freq_attr_scaling_available_freqs" in /var/log after building and attempting to load the power driver module
Below are some suggestions for troubleshooting problems with the power analysis feature.
There are 8 MEM_TRANS_RETIRED.LOAD_LATENCY_GT_* precise events available on Intel® Microarchitecture Codename Sandy Bridge. The events allow you to pinpoint loads that exceeded a given latency, measured in CPU clock cycles. For example, the MEM_TRANS_RETIRED.LOAD_LATENCY_GT_4 event is for loads exceeding 4 clocks in latency, and the MEM_TRANS_RETIRED.LOAD_LATENCY_GT_512 event is for loads longer than 512 clocks.