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Operating Systems OS X (Apple) Newbie PATH command question... Post 302722969 by xbin on Monday 29th of October 2012 06:39:02 AM
Old 10-29-2012
Use MacPorts and install mod_perl. This should build the module with perl5.16 for Apache. Permanently disabling the OS distribution is not a good idea. What shell are you using?
 

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Apache::DProf(3pm)					User Contributed Perl Documentation					Apache::DProf(3pm)

NAME
Apache::DProf - Hook Devel::DProf into mod_perl SYNOPSIS
#in httpd.conf PerlModule Apache::DProf DESCRIPTION
The Apache::DProf module will run a Devel::DProf profiler inside each child server and write the tmon.out file in the directory $ServerRoot/logs/dprof/$$ when the child is shutdown. Next time the parent server pulls in Apache::DProf (via soft or hard restart), the $ServerRoot/logs/dprof is cleaned out before new profiles are written for the new children. WHY
It is possible to profile code run under mod_perl with only the Devel::DProf module available on CPAN. You must have apache version 1.3b3 or higher. When the server is started, Devel::DProf installs an "END" block to write the tmon.out file, which will be run when the server is shutdown. Here's how to start and stop a server with the profiler enabled: % setenv PERL5OPT -d:DProf % httpd -X -d `pwd` & ... make some requests to the server here ... % kill `cat logs/httpd.pid` % unsetenv PERL5OPT % dprofpp There are downsides to this approach: - Setting and unsetting PERL5OPT is a pain. - Server startup code will be profiled as well, which we are not really concerned with, we're interested in runtime code, right? - It will not work unless the server is run in non-forking "-X" mode These limitations are due to the assumption by Devel::DProf that the code you are profiling is running under a standard Perl binary (the one you run from the command line). "Devel::Dprof" relies on the Perl "-d" switch for intialization of the Perl debugger, which happens inside "perl_parse()" function call. It also relies on Perl's special "END" subroutines for termination when it writes the raw profile to tmon.out. Under the standard command line Perl interpreter, these "END" blocks are run when the "perl_run()" function is called. Also, Devel::DProf will not profile any code if it is inside a forked process. Each time you run a Perl script from the command line, the "perl_parse()" and "perl_run()" functions are called, Devel::DProf works just fine this way. Under mod_perl, the "perl_parse()" and "perl_run()" functions are called only once, when the parent server is starting. Any "END" blocks encountered during server startup or outside of "Apache::Registry" scripts are suspended and run when the server is shutdown via apache's child exit callback hook. The parent server only runs Perl startup code, all request time code is run in the forked child processes. If you followed the previous paragraph, you should be able to see, Devel::DProf does not fit into the mod_perl model too well. The Apache::DProf module exists to make it fit without modifying the Devel::DProf module or Perl itself. The Apache::DProf module also requires apache version 1.3b3 or higher and "PerlChildInitHandler" enabled. It is configured simply by adding this line to your httpd.conf file: PerlModule Apache::DProf When the Apache::DProf module is pulled in by the parent server, it will push a "PerlChildInitHandler" via the Apache push_handlers method. When a child server is starting the "Apache::DProf::handler" subroutine will called. This handler will create a directory "dprof/$$" relative to ServerRoot where Devel::DProf will create it's tmon.out file. Then, the handler will initialize the Perl debugger and pull in Devel::DProf who will then install it's hooks into the debugger and start it's profile timer. The "END" subroutine installed by Devel::DProf will be run when the child server is shutdown and the $ServerRoot/dprof/$$/tmon.out file will be generated and ready for dprofpp. NOTE: $ServerRoot/logs/dprof/ will need to be writable by the user Apache is running as (i.e. nobody, apache, etc.). If you can not write to $ServerRoot as this user, set $ENV{APACHE_DPROF_PATH_ABSOLUTE} to an absolute path of a directory this user can. AUTHOR
Originally written by Doug MacEachern Currently maintained by Frank Wiles <frank@wiles.org> LICENSE
This module is distributed under the same terms as Perl itself. SEE ALSO
Devel::DProf(3), Apache::DB(3), mod_perl(3), Apache(3) perl v5.14.2 2006-09-13 Apache::DProf(3pm)
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