User space context switch

[Vimal]

Hi Mohit,

On 18 March 2011 13:07, mohit verma <mohit89mlnc at gmail.com> wrote:
> hi all,
>   is it possible to write a user space code to calculate the context switch
> time of a process ? I mean , how can the user space code know about the
> working of the scheduler?
> Is there any system call API to interact with scheduler or something other
> to interact with , regarding  this problem?

Do check the function tracing framework in the Linux Kernel.

Links:
* http://lwn.net/Articles/322666/
* http://lwn.net/Articles/290277/

sched_switch is the tracer you're looking for.

-- 
Vimal