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Posted to modperl@perl.apache.org by Jason Dixon <ja...@dixongroup.net> on 2004/11/02 16:30:32 UTC

Apache profiler errors

Note:  Folks on perlmonks might recognize this post from last night.  
There have been no responses, so I'm posting it to the mod_perl list.

I'm trying to profile some perl CGI someone else wrote, but I can't 
seem to get Apache::DProf working.  My server runs Apache 2.0.46 with 
mod_perl 1.99 and Apache::DProf 0.09.  I'm getting the following error 
when trying to start Apache when Apache::DProf is set to load in 
httpd.conf:

<code>
Starting httpd: [Mon Nov 01 22:37:13 2004] [error] Can't locate object 
method "server_root_relative" via package "Apache::Server" at 
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi/Apache/DProf.pm 
line 30.!Compilation failed in require at (eval 2) line 3.!
[Mon Nov 01 22:37:13 2004] [error] Can't load Perl module Apache::DProf 
for server localhost:0, exiting...!
</code>

Now, if I'm not mistaken, server_root_relative is in 
Apache::ServerUtil.  Looking at the relevant portion of DProf.pm, it 
appears to handle the differences between Apache1 and Apache2 
correctly, so Apache::compat shouldn't be necessary (although I've 
tried that too):

<code>
package Apache::DProf;

use strict;
use Apache::DB ();
use File::Path ();

{
     no strict;
     $VERSION = '0.04';
}

# Need to determine if we are in a mod_perl 1.x or 2.x environment
# and load the appropriate modules
BEGIN {
         use constant MP2 => eval { require mod_perl; $mod_perl::VERSION 
 > 1.99 };
         die "mod_perl is required to run this module: $@" if $@;

         if (MP2) {
                 require Apache2;
                 require Apache::RequestRec;
                 require Apache::ServerUtil;
         }
}


# Adjust to handle mp1 and mp2 differently
my $prof_path;
if (MP2) {
     my $s = Apache->server;
     $prof_path = $s->server_root_relative( $ENV{APACHE_DPROF_PATH} ||
                                            "logs/dprof");
}
else {
     $prof_path = Apache->server_root_relative($ENV{APACHE_DPROF_PATH} ||
                                            "logs/dprof");
}
</code>

Any ideas why this module is failing for me?  I've tried Googling on 
the server_root_relative error, but this inevitably directs me to 
Apache::compat suggestions, which I don't think are relevant to this 
module.

Thanks,

--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net


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Re: Apache profiler errors

Posted by Perrin Harkins <pe...@elem.com>.

On Tue, 2004-11-02 at 10:45, Jason Dixon wrote:
> Unfortunately not.  The client has mandated that we stick with the RHEL 
> package for "supportability".

That's precisely the reason you shouldn't stick with the RHEL package. 
The version of mod_perl they ship is ancient and hard for the mod_perl
devs to support since so many of its bugs have been fixed in later
releases.  Please at least try it on a test machine and see if it fixes
the problem.

- Perrin

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Re: Apache profiler errors

Posted by Jason Dixon <ja...@dixongroup.net>.

On Nov 2, 2004, at 10:35 AM, Perrin Harkins wrote:

> On Tue, 2004-11-02 at 10:30, Jason Dixon wrote:
>> My server runs Apache 2.0.46 with
>> mod_perl 1.99 and Apache::DProf 0.09.
>
> Can you re-try with the latest?  The current apache release is 2.0.52
> and the current mod_perl release is 1.99_17.

Unfortunately not.  The client has mandated that we stick with the RHEL 
package for "supportability".

Thanks,

--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net



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Re: Apache profiler errors

Posted by Perrin Harkins <pe...@elem.com>.

On Tue, 2004-11-02 at 10:30, Jason Dixon wrote:
> My server runs Apache 2.0.46 with 
> mod_perl 1.99 and Apache::DProf 0.09.

Can you re-try with the latest?  The current apache release is 2.0.52
and the current mod_perl release is 1.99_17.

- Perrin


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