Profiling Kernel function blocks

[Domenico Di Leo]

Just I typo, I meant thread_indent

On 8/2/2012 4:17 PM, Domenico Di Leo wrote:
> Hi,
> I was wondering if anybody has experienced a
> hang of the entire OS when profiling
> the functions of the kernel module.
> In other words, when I run the following script
> probe kernel.function("*@kernel/*.c").return{
>     printf("%s  %s", threadindent(-1),probefunc());
> }
> the entire OS gets stuck.
> I also tried with
> probe kernel.function("*@kernel/*sched.c").return{
>     printf("%s  %s", threadindent(-1),probefunc());
> }
> and after some printing the OS gets stuck again.
>
> I'm using systemtap v1.4 and kernel 2.6.24 on Gentoo.
> Thank
>


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Domenico Di Leo, PhD student, Università degli Studi di Napoli Federico II
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