dprofpp -g broken?

guitarmarkus has asked for the wisdom of the Perl Monks concerning the following question:

Hi, When I try to use the -g option of dprofpp dproffpp -g mypack::myfunc
I get the error
Modification of non-creatable array value attempted, subscript -1 at /usr/bin/dprofpp line 662, <fh> line 501.
when I look at tmon.out I can see lines with & 2cb mypack myfunc
.... my version of dprofpp is my $VERSION = '20030813.00';
but apparently Devel::DProf is up to date according to CPAN...
Any clue??? Thanks Mark

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Re: dprofpp -g broken? by Khen1950fx (Canon) on Apr 20, 2007 at 05:22 UTC
I gave it a shot. At first, I got the same error as you, but I played with it for awhile. It finally kicked in. I profiled Math::Pari--- `perl -d:DProf /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi +/Math/Pari.pm dprofpp -g` [download] I ran it 4 times, and I got different numbers each time. Simon Cozens has said, "Understanding how `dprofpp`'s overhead compensation code works is Not Easy and has meant that I haven't tried to apply overhead compensation in this module. All the data's there if you want to do it yourself. The numbers produced by Devel::DProf are pseudorandom anyway, so this omission shouldn't make any real difference." That says it all. Good luck.	[reply] [d/l] [select]
Re^2: dprofpp -g broken? by guitarmarkus (Initiate) on Apr 20, 2007 at 19:08 UTC
Do you mean you changed the code of dprofpp? can you send me your changes if so?	[reply]