Re: help for a rookie

[Maynard J. <may...@us...>]

Lee, Ju-hyoung wrote:
> Thanks for the reply.
> 
> Here is the answer of your questions.
> 1. 'Please be more specific.  What commands didn't work and how do you "know" they didn't work?  Error messages? What version of OProfile are you using?'. Please see below my commands. I failed to compile oprofile source code in my system, and download it by 'apt-get install oprofile'
> 
> root@WSS00748:/home/intel# opcontrol --vmlinux=/boot/vmlinuz-2.6.30-wl 
Firstly, you cannot use a compressed image here.  See the FAQ -- there are 
several entries dealing with profiling the kernel.

> FATAL: Module oprofile not found.
I presume you're getting this because you have no oprofile kernel driver for 
your processor's architecture.  You'll need to develop the code and build it, 
either as a module or built into the kernel.  I suggest you start with chapter 1 
of http://oprofile.sourceforge.net/doc/internals/index.html.  You should look at 
how other architectures have implemented oprofile kernel drivers.  Maybe you can 
find one similar to your architecture that you can "borrow" some code from.
> FATAL: Module oprofile not found.
> Kernel doesn't support oprofile
> root@WSS00748:/home/intel# opcontrol --version
> opcontrol: oprofile 0.9.3 compiled on Feb 25 2009 10:54:30
You'll need to add support for your new processor to the oprofile userspace 
package as well.  You should download the latest oprofile source from cvs 
(http://oprofile.sourceforge.net/download/) in order to do this, assuming you'll 
eventually want to submit a patch here to push it upstream.  For most 
architectures, adding processor-specific support to the userspace tool is pretty 
easy.  For an example, see my patch for adding IBM POWER7 support, posted to 
this list on Apr 24.  But keep in mind this is just an example since the support 
for IBM PowerPCs in oprofile is unique in that in includes both an events file 
and an events_mapping file.

-Maynard
> 
> 2. 'What's your kernel version?  What processor type are you running on?'. 
> The kernel is 2.6.30-wl, and processor is new platform to the market so that I cannot tell you.
> 
> Thanks, 
> Best Regards 
>                   
>                   Ju-Hyoung Lee (503-264-1167)
> 
> -----Original Message-----
> From: Maynard Johnson [mailto:may...@us...] 
> Sent: Monday, June 15, 2009 4:58 AM
> To: Lee, Ju-hyoung
> Cc: opr...@li...
> Subject: Re: help for a rookie
> 
> Lee, Ju-hyoung wrote:
>> I am just jumping into the OProfile, and want to start from the scratch. I found a good web site outside, but need to get some help to find my answers.
>> In the OProfile compilation, I still see the 'Not found Qt library, no Gui ...' error message. Does it mean I can do OProfile testing only on command line? 
> Yes.
>> Also the sample commands from the FAQ and documents site did not work in my system. I am curious if my setup is not good enough or if I need to rebuild the kernel with a certain configuration.
> Please be more specific.  What commands didn't work and how do you "know" they didn't work?  Error messages?  What version of OProfile are you using?  What's your kernel version?  What processor type are you running on?
> 
> -Maynard
>> Is there any good guideline for me?
>>
>> Thanks,
>> Best Regards
>>
>>                   Ju-Hyoung Lee
>>
>>
>>
>>
>>
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