Linux (or Ubuntu specific) tools to measure number of page faults

[John Moser]

TIME="%Uuser %Ssystem %Eelapsed %PCPU (%Xtext+%Ddata %Mmax)k
%Iinputs+%Ooutputs (%Fmajor+%Rminor)pagefaults %Wswaps" time ls


On 05/02/2012 10:08 PM, Alfred Zhong wrote:
> Thank you all so much!
>
> On Wed, May 2, 2012 at 5:47 AM, Colin Ian King <colin.king at canonical.com
> <mailto:colin.king at canonical.com>> wrote:
>
>     On 01/05/12 02:53, Alfred Zhong wrote:
>
>         Dear Ubuntu Developers, especially Kernel Hackers,
>
>
>         This may be a stupid question, please excuse my ignorance.
>
>         I am doing a project on Linux scheduler that trying to minimize
>         number
>         of page faults.
>
>         I finished the algorithm implementation and I need to measure the
>         effect. I am wondering if Linux provides tools to record number
>         of page
>         fault happened during the whole execution process?
>
>         Basically, I want something like $ pfstat ./a.out page faults: 3
>         Execution Time: 1003 ms
>
>         Is there such a tool? I want to make sure before deciding to
>         write one
>         by myself, which will be a lot of work...
>
>         Thanks a lot!
>
>         Alfred
>
>     There are well defined APIs for collecting this kind of data, for
>     example you can collect the rusage info for an exiting child process
>     using wait3() or wait4().
>
>     References:
>        man 2 wait3
>        man 2 rusage
>
>
>
>
>