dtrace discuss - Aug 2007 - User defined functions call from Dtrace...!

Hi, 
   How I do check how many times a user defined function is called, by using
dtrace. I did from the command line by passing library and system call as
arguments to dtrace:
$ dtrace -n PID:libc:malloc
    
          for example, I defined a function called fun1() and I ''d like
to debug fun1() with dtrace to know how many times fun1() is called, total time
taken for execution, how many system calls fun1() called.
      could anyone pls suggest me...


--
This message posted from opensolaris.org

rps wrote:
> Hi, 
>    How I do check how many times a user defined function is called, by
using dtrace. I did from the command line by passing library and system call as
arguments to dtrace:
> $ dtrace -n PID:libc:malloc
>     
> for example, I defined a function called fun1() and I ''d like to
> debug fun1() with dtrace to know how many times fun1() is called,
> total time taken for execution, how many system calls fun1() called. 
> could anyone pls suggest me...
hints:
- how often: use count()
- time taken: use timestamp() creatively in :entry and :return probes
- how many syscalls called from fun1: set a flag, and then use count in 
syscall:::entry/flag/

you can find all the details in the Dtrace guide which you can in turn 
find on the opensolaris page.

HTH
Michael
-- 
Michael Schuster	Sun Microsystems, Inc.
recursion, n: see ''recursion''