Re: missing samples from oprofile

[Yossi I. <mis...@gm...>]

I did start the sampling.. but it looks to me like a bug in centos 6.2
driver.. I wonder if anyone else stumbled upon this behavior.

On Tue, May 29, 2012 at 12:03 PM, Pedro Erencia <per...@gm...> wrote:

> I'm very new to OProfile, but i'd say that you must do opcontrol -s to
> start sampling, it's what opcontrol --start is supposed to do...
>
>
>
> 2012/5/28 Yossi Itigin <mis...@gm...>
>
>> Hi,
>>
>> I am trying to use oprofile to sample a running process. The process
>> takes 100% CPU, but still there are no samples from it in oprofile (just
>> no-vmlinux, some daemons, and opreport itself get sampled)
>> However, if i start the process *after* starting oprofile (with opcontrol
>> -s) - the process *does* get sampled.
>>
>> I am using the default oprofile which comes with centos 6.2 - 0.9.6-21,
>> kernel 2.6.32-220.el6.x86_64.
>> Tried to compile 0.9.7 from source and use it, but still get the same
>> result.
>> oprofile log does not show any buffer overflows, by the way.
>>
>> Thanks,
>> --Yossi
>>
>>
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>


-- 
--Yossi