Custom Analysis - New Hardware Event-based Sampling Analysis

Analysis name field

Enter/edit a name of this custom analysis type.

Description

Provide a short meaningful description on the analysis type you create. This information may help you easily identify the analysis type specifics later.

Events table

Specify events to collect information about.

Analyze system-wide context switches check box

Analyze detailed scheduling layout for all threads on the system and identify the nature of context switches for a thread (preemption or synchronization).

Collect context switches check box

Analyze detailed scheduling layout for all threads in your application, explore time spent on a context switch and identify the nature of context switches for a thread (preemption or synchronization).

Analyze GPU Usage (Intel HD Graphics only) check box

Analyze GPU usage and frame rate to identify whether your application is GPU or CPU bound.

Collect stacks check box

Enable advanced collection of call stacks and thread context switches to analyze performance, parallelism, and power consumption per execution path.

Stack size, in bytes field

Specify the size of a raw stack (in bytes) to process. Zero value means unlimited size. Possible values are numbers between 0 and 2147483647.

Estimate call counts check box

Obtain statistical estimation of call counts based on the hardware events.

Estimate trip counts check box

Obtain statistical estimation of loop trip counts based on the hardware events.

Chipset events field

Specify a comma-separated list of Android chipset events (up to 5 events) to monitor with the hardware event-based sampling collector.

Select events for analysis field

Use the Events Library to select Linux Ftrace* and Android* framework events to monitor with the collector. The collected data show up as tasks in the Timeline pane. You can also apply the task grouping level to view performance statistics in the grid.

Analyze memory bandwidth check box

Collect events required to compute memory bandwidth.

Analyze memory objects check box

Enable the instrumentation of memory allocation/de-allocation and map hardware events to memory objects.

Minimal memory object size to track, in bytes spin box

Specify a minimal size of memory allocations to analyze. This option helps reduce runtime overhead of the instrumentation.

Analyze user tasks check box

Analyze tasks in your code specified via Task API. This option caused higher overhead and increases the result size.

Analyze frames and OpenMP regions check box

Analyze frames, specified in your code via Frames API, and OpenMP* regions (enabled by default). This option causes higher overhead and increases result size.

Analyze Processor Graphics events drop-down menu

Analyze performance data from Intel HD Graphics based on the predefined groups of GPU metrics.

GPU sampling interval, us spin box

Specify an interval (in microseconds) between GPU samples.

Trace OpenCL and Intel Media SDK programs (Intel HD Graphics only) check box

Capture the execution time of OpenCL™ kernels and Intel Media SDK programs on a GPU, identify performance-critical GPU tasks, and analyze the performance per GPU hardware metrics.

Collect precise clockticks check box

Collect the vents that emulates precise clockticks and could be useful, for example, to analyze hotspots in transactions.

Analyze loops check box

Extend loop analysis to collect advanced loops information such as instruction set usage and display analysis results by loops and functions. If this option is enabled, the VTune Amplifier automatically applies the Loops and functions filtering mode to the data view in the grid and enables the Vector Instruction Set column that shows a vectorization instruction set used for a particular function, loop, and so on.

Event mode drop-down list

Limit event-based sampling collection to USER (user events) or OS(system events) mode. By default, all event types are collected.

Analyze active power consumption check box

Analyze the energy taken by processor cores, integrated graphics, DRAM, or the entire processor package while executing your application. This option is available only for Intel microarchitectures code name Sandy Bridge and Ivy Bridge.

Analyze idle power consumption check box

Analyze the time spent in processor sleep states while executing your application. This option is available only for Intel microarchitectures code name Sandy Bridge and Ivy Bridge.

Command line name field

Enter/edit a name of the custom analysis type that will be used as an identifier when analyzing the project from the command line. Keep it short for your convenience.

Analysis identifier field

Specify a shorthand identifier to be appended to the name of each result produced by this analysis type. For example, adding the ge identifier for the General Exploration analysis result produces the following result name: r000ge, where 000 is the result number.