VTUNE powerpoint presentation

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TO
National Institute Of Information Technology
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SEMINAR ON
INTEL VTUNE
Guided by- Jyoti Ranjan parida
Presented by- Bhabani Sankar Barik
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CONTENTS-
Introductions of Intel VTune
Features of VTune Performance Analyzer
Sampling
Call Graph
Counter Monitor
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Tunning Assistance
Conclusion
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Introductions of Intel VTune -

• Intel VTune is software from Intel used by the
  development companies to analyze their software's
  and applications performance.
• It also provides boost performance of
  applications.
• One can work with the VTune analyzer
  using the graphical interface and command
  line interface.
• The VTune Performance Analyzer can analyze the
  performance of Linux applications, Java
  application and .NET Applications.

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Introductions of Intel VTune -

• It can also identify and locate the code
  snippets in your application that shows the
  highest amount of activity over a specific
  period.
• VTune Performance Analyzer also displays how an
  application interacts with the OS or other
  software, such as drivers.
• VTune Performance Analyzer helps you tune an
  application at different levels, such as the
  system, application, and computer architecture
  level.
•  

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Features of Intel VTune -

• SAMPLING
• CALL GRAPH
• COUNTER MONITOR
• TUNING ASSISTANT

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• Sampling-

.

• Sampling is the process of collecting a set of
  data for analysis and representing the analyzed
  data in a statistical format. During sampling,
  the VTune performance Analyzer monitors all the
  applications, which includes the operating
  system, java applications, .NET applications, and
  device drivers.
• It calculates the actual Performance of an
  application over a period of time and various
  processor events.
• Sampling doesnt modify binary files or
  executables.
• It helps you to identify the Hotspots
  Bottlenecks.

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• Sampling-

.

• VTune performance Analyzes provides two types of
  sampling mechanisms to collect data. They are the
  time-based sampling (TBS) and the event-based-
  sampling (EBS). However, before performing TBS or
  EBS, you need to configure the sampling collector
  by using the different wizards available in the
  VTune Performance Analyzer.
• Performing Time-Based Sampling
• Performing Event-Based Sampling

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Performing Time-Based Sampling -
.

• In TBS, the VTune Performance Analyzer collects
  samples of an activity at regular intervals. TBS
  uses the Operating System (OS) timer to calculate
  the time interval for collecting samples. The
  default time interval is 1 milli seconds. The
  collected samples display the performance data of
  the processes running on the computer. The
  process that takes the longest time to execute
  contains the largest number of samples.
• When you performance an activity by using
  time-based sampling, the VTune Performance
  Analyzer
• Executes the application you have launched.
• Stop the processor at the sampling interval and
  collects samples of the specified application.

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Performing Time-Based Sampling -
.

• Stores sampling data in the buffer. When the
  buffer is full, it stops sampling. The VTune
  performance Analyzer then writes the sampling
  data to the disk and resumes sampling.
• Continues to collect sampling data until the
  specified application terminates or the specified
  sampling duration ends.
• Analyzer the collected data creates an activity
  result in the Tuning Browser windo0w, and display
  the total collected for each module.
•  
•  

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Performing the Event-Based Sampling
.

• While TBS is performance on the basic of OS time,
  EBS is performed on processor events. When you
  run an application, processor events, such as
  cache miss, also affect then performance of the
  application. By using EBS, you can determine
  which process, threats, module, function, or code
  line in the application is generating the largest
  number of processor events.
• After configuring the Sampling Collector for EBS
  and performing an activity, the VTune performance
  Analyzer determines the type of processes running
  on your computer. After determining the
  application supports. However, you can select an
  event group or an event to collect sampling data.
  An event group is a group of related events.

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• Call Graph

.

• The call graph collector of VTune Performance
  Analyzer helps you obtain information about the
  functional flow of an application.
• Call graph also helps you obtain information
  about how many times a function is called from a
  specific location.
• In addition, the call graph collector helps you
  identify the amount of time spent on each
  function when executing its code.

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• Call Graph

.

• Call graph profiling includes collecting and
  analyzing function call information and
  displaying the results in the call list, graph,
  and function summary views.
• A call graph collector enables you to identify
  critical paths in the call sequence of an
  application that originates from the root
  function.
• In a call graph, thee critical path is displayed
  with a thick red edge and starts from the most
  time consuming function or thread.

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Graph View-
.

• The graph view displays graphical structure of
  the application that you run in VTune Performance
  Analyzer. The graph view also displays the caller
  function, the callee function, the time
  information as seen in the following figure.
• Estimate the performance of your application.
• Find potential performance bottlenecks.
• Find the critical path.
• created.

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Call List View
.

• The call list views displays information about
  time calls of the focus function. The focus
  function is the function that you highlight in
  the function summary or the graph view.
•  
• The call list view has three different sections-
• Focus function
• Caller function
• Callee function
•  

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Function Summary View
.
The function summary view displays all the
functions that your application calls along with
the performance metrics list tabular format.
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Counter Monitor-
.

• Counter Monitor identifies system-level issues in
  applications. It is used to track system
  activities when the application runs on the
  system.
•  
• Counter Monitor collects data for specific
  performance counter data, such as that of an
  application, an OS, or a hardware device at
  different intervals of time. The counter monitor
  collector monitors and graphically displays the
  performance counter data.
• There are three types of views in Counter
  Monitor.
• Runtime Data View
• Logged Data View
• Summary Data View
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Counter Monitor-
.
a. Runtime Data View- During Runtime, the VTune
Analyzer generates a graph that shows changes as
they happen.   b. Logged Data View- Displays
Data logged during an Activity. In the Logged
Data View, Data from each counter selected for
logging is charted with a separate line
color.   c. Summary Data View- Displays a
statistical view of the counter data.  
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Tunning Assistant
.

• The Tuning Assistant provides advice on tuning
  your system resources and application
  performance.
• Using its multiple knowledge bases, the Tuning
  Assistant analyzes the data collected by the
  VTune(TM) Performance Analyzer, identifies
  performance issues, and provides insights and
  tuning advice.
• There are three types of Tunning Assistant. Such
  as.
• System-Level Tunning
• Application-Level Tunning
• Microarchitecture-Level Tunning
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Tunning Assistant
.

• System-Level Tunning-
• The main objective of system-level tuning is to
  optimize the utilization of system resources. The
  tuning speeds up application performance by
  improving the way the application interacts with
  the system. This tuning is effective for I/O
  applications.
• Application-Level Tunning
• The main purpose of application-level tuning is
  to reduce the execution time of an application.
  This can be achieved by improving the algorithms
  of the applications, implementing threads, and by
  using APIs.

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Tunning Assistant
.

• Microarchitecture-Level Tunning
• Increases the performance of application by
  improving the way an application runs on a
  processor. This type of tuning is used with
  processor-intensive applications

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Conclusion
.

• Having such great features and advantages, The
  Intel VTune Technology will have a very important
  role in this era of Information Technology. It
  will enable wider use and exchange of information
  in a customized and universally acceptable format
  in future. VTune Performance Analyzer includes
  activities and data collectors for collecting the
  performance related data for your application.
  Activities control collection of data. Within an
  Activity, you can specify the types of
  performance data you wish to collect. For each
  type of performance data, you need to configure
  the appropriate data collector. The data
  collectors included in an Activity collect
  performance data. The different data collectors
  collect different types of performance data.

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