Re: Query about oprofile capabilities

[William C. <wc...@re...>]

On 07/21/2010 06:07 AM, Witting, Jon [Tech] wrote:
> Hi,
> 
>  
> 
> I know this may be a silly question, but I’m a bit confused.
> 
>  
> 
> I have a program that is composed of multiple class files (in C++) that I want to profile. I would normally run the program executable in command line like so:
> 
>  
> 
> //home/petsqa/europa_qa/bin/booking_service_G -x G -c /home/petsqa/europa_qa/config/booking_service_G.xml -e G -f /home/petsqa/europa_qa/config/booking_service_G.cfg/
> 
> / /
> 
> I there  a way in which I can JUST profile my program to record its performance? If so, how?
> 
>  
> 
> I have been looking over the documentation and I am still unclear of how I would achieve this. If you could help me out I would be very grateful.
> 
>  
> 
> Kind regards,
> 
> Jon

Hi Jon,

You can use the --image option for opcontrol. It is mentioned in the man page for opcontrol. Something like should work for user-space data:

opcontrol --setup --separate=library --image=/home/petsqa/europa_qa/bin/booking_service_G --no-vmlinux

If want to get kernel samples related for the app included, I think the following will work on Red Hat Enterprise Linux and Fedora:

opcontrol --setup --separate=kernel --image=/home/petsqa/europa_qa/bin/booking_service_G \
--vmlinux=/usr/lib/debug/lib/modules/`uname -r`/vmlinux

-Will