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I just upgraded my vtune analyzer 9.1 to VTune Amplifier, in vtune analyzer 9.1 call graph I am able to reduce the instrument level to minimalof the dll which I am not interested, am I able to achieve it in Vtune Amplifier also? Because I am only interested in the specific dll.
Any suggestions?
Regards
BluePlant
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Blueplant,
The following Intel VTune Amplifier XE Forum thread may
provide additional information about call counts and statistical call graph
methodology used by Amplifier XE.
http://software.intel.com/en-us/forums/showthread.php?t=81390
Let us know if you need additional information or clarification.
Thanks
Rob
Intel Support
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Blueplant,
Thank you for your question. The VTune Amplifier XE 2011 uses
statistical call graph method instead of a full call graph. There are many reasons why the
methodology changed from a full call graph to statistical call graph. We may need to know more about what exactly
you are attempting to accomplish by focusing on a single dll. For example, was it used for exploring the
application architecture? Or to analyze
call counts to determine which functions to inline? Or, other reason?
The
performance values reported by the call graph were an approximation and the
overhead of collected data usually resulted in an 8x performance degradation of
the application. With the new statistical call stack sampling, there is a
low overhead method of finding the hottest functions and how they were called.
The Top-Down
Tree or Bottom-up views in VTune
Amplifier XE 2011 with the module column may provide the functionality you wish
in target analysis of your dll module.
Thanks
Rob
Intel
Support
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Thank you for your reply, because the developper believes that most of the performance issues are caused by this particular .dll, they would like to know the call counts of the functions in this dll (can I get this information from the analyzsis result?) and see which function takes the most of time, I think it is the second reason you mentioned, so I can use top down or botton up views to achieve it, right? And do you have any more suggestions? I really appreciate your time and effort.
Thanks & regards
BluePlant
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Blueplant,
The following Intel VTune Amplifier XE Forum thread may
provide additional information about call counts and statistical call graph
methodology used by Amplifier XE.
http://software.intel.com/en-us/forums/showthread.php?t=81390
Let us know if you need additional information or clarification.
Thanks
Rob
Intel Support
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