dtrace discuss - Feb 2007 - Does Dtrace supports perl ?

If not, how do i start  to make it for  perl.

Thanks,
Vikrant
 
 
This message posted from opensolaris.org

Last two things I saw on this were from Adam Leventhal:
http://blogs.sun.com/ahl/date/20041005
"And speaking of perl, a lot of people asked about DTrace''s
visibility into perl. Right now the only non-natively executed languate DTrace
lets you observe is java, but now that we realize how much need there is for
visibility into perl, we''re going to be working aggressively on making
DTrace work well with perl. We''ve got some neat ideas, but if there are
things you''d like to see with DTrace and perl, we''d love to
hear about it as we think about what sorts of problems we need to solve."

and from Alan Burlison:
http://blogs.sun.com/alanbur/entry/dtrace_and_perl

Anyone from SUN care to respond?

-Shawn
 
 
This message posted from opensolaris.org

On Sun, 25 Feb 2007, Vikrant Kumar Choudhary wrote:
> If not, how do i start  to make it for  perl.
I do not know what you try to achieve, but you might already have 
good monitoring, if you know the C language functions that implement 
the Perl interpreter. If you know them the the PID-provider could be 
used as described here

    http://wiki.gridengine.info/wiki/index.php/Dtrace#Implementation

note, the only prerequisite for the PID-provider to be working is 
that the functions you monitor were not inlined by the compiler.

Regards,
Andreas

It does now.

 From http://use.perl.org/articles/08/01/08/2039207.shtml

   I hope I''m not stealing AndyA''s thunder, but this just went
by on p5p
   and I''m excited!

     From: Andy Armstrong <andy at hexten.net>

     I now have a dtraced bleadperl which runs no slower than the clean
     version:

     orig       | dtrace     | ratio
     ===================================     2.51239896 | 2.47904992 |
0.98672622
     2.50696611 | 2.46995783 | 0.98523782
     2.52996778 | 2.47554016 | 0.97848683
     2.50457382 | 2.47788405 | 0.98934359
     2.50622296 | 2.46893001 | 0.98511986

     In fact in those tests the dtraced version is running marginally
     faster. I''m putting that down to a happy code alignment or
somesuch.

If you don''t want to run bleadperl, which is understandable, then see 
Devel::DTrace on CPAN:

     http://search.cpan.org/dist/Devel-DTrace/lib/Devel/DTrace.pm

N

On 11 Jan 2008, at 20:43, nik wrote:
> It does now.

See also my next mail :)

dtrace support is now in blead.

-- 
Andy Armstrong, Hexten