Performance Assistant
Performance Assistant provides you with the general and detailed information about
performance problems. You can use this feature either in GUI or in the CLI mode.
To access the tool from the GUI, go to 
toolbar button. For information on how to use the Performance Assistant in
the CLI, refer to the Command Line
Interface (CLI) section.
Charts
> Performance
Assistant
or use the toolbar button. For information on how to use the Performance Assistant in
the CLI, refer to the Command Line
Interface (CLI) section.By default, the Performance Assistant does not display all performance problems in
your application so as not to slow down the work of the Intel® Trace Analyzer. If
you want to get information on all the performance issues, select
Show
advanced...
. Note that this option resets zoom to default. It can also slow
down the work of the Intel Trace Analyzer.Performance Assistant is not supported when the trace file is collected with
enabled Correctness Checker or
TIME-WINDOWS
. In this case, the Performance Assistant displays
incorrect data.See all discovered performance problems and their duration in the upper section of
the Performance Assistant. The duration of the problem is displayed in two values -
the absolute value and the percentage of the application running time.
Use the lower section of the Performance Assistant to get detailed information on
the selected problem. The lower section contains the following tabs:
Description
In the Description tab, get the description of the problem and recommendations on
how to fix it. For example:
Affected Processes
In the Affected Processes tab, see the distribution of the performance problem
duration among the processes. For example:
Source Locations (Root Causes)
Go to the Source Locations (Root Causes) tab, to get instances of the problem in
the source code.
Performance Assistant displays source code only if debug information is present
in it and the
VT_PCTRACE
environment variable is enabled.
Press the
Show Source
button to open the Source View dialog box and see
the problem-causing calls. Change the highlighted code to fix the problem (get the
possible solutions under the Description tab of the Performance Assistant). The
Source View dialog box also contains the call stack information.For example:
