dtrace discuss - May 2008 - How to use perl bindings for dtrace on macosx leopard ?

According to this page,

http://www.apple.com/macosx/technology/unix.html

In addition, Java, Ruby, Python, and Perl have been extended to support DTrace,
providing unprecedented access for monitoring the performance characteristics of
those languages.

When I do dtrace -l | grep -i perl on MacOSX 10.5.2. I don''t see any
perl providers so I am not sure how I could monitor perl scripts via dtrace

I looked around on Apple''s opensource website and saw this file in its
perl source

http://www.opensource.apple.com/darwinsource/10.5.2/perl-51.1.2/
http://www.opensource.apple.com/darwinsource/10.5.2/perl-51.1.2/fix/pldtrace.d

Can anybody advise me the steps I need to take in order to dtrace a perl script
on MacOSX 10.5.2 ?


--
This message posted from opensolaris.org

2008/5/2 Yusuf Goolamabbas <yusufg at gmail.com>:
> According to this page,
>
>  http://www.apple.com/macosx/technology/unix.html
>
>  In addition, Java, Ruby, Python, and Perl have been extended to support
DTrace, providing unprecedented access for monitoring the performance
characteristics of those languages.
>
>  When I do dtrace -l | grep -i perl on MacOSX 10.5.2. I don''t see
any perl providers so I am not sure how I could monitor perl scripts via dtrace
You need to have a perl process running to see its probes - try this
command to see what''s available:

$ sudo dtrace -l -n ''perl$target:::'' -c "/usr/bin/perl
-e1"
   ID   PROVIDER            MODULE                          FUNCTION NAME
18810  perl94989     libperl.dylib                      Perl_pp_sort sub-entry
18811  perl94989     libperl.dylib                   Perl_pp_dbstate sub-entry
18812  perl94989     libperl.dylib                  Perl_pp_entersub sub-entry
18813  perl94989     libperl.dylib                      Perl_pp_last sub-return
18814  perl94989     libperl.dylib                    Perl_pp_return sub-return
18815  perl94989     libperl.dylib                     Perl_dounwind sub-return
18816  perl94989     libperl.dylib                Perl_pp_leavesublv sub-return
18817  perl94989     libperl.dylib                  Perl_pp_leavesub sub-return

You could also look at Devel::DTrace on CPAN, which provides the same
probes for an unpatched perl binary. That might be better if you''re
using a macports perl, say.


Chris.