Debug as of 2009-10-08 08:34:17

Logs

Apache

one process mode

This is useful only for debug, this start only one apache process and prevent concurent requests.

/usr/local/apache/bin/httpd -X

[http://search.cpan.org/dist/DBI DBI::ProfileDumper::Apache]

Maybe not everyone knows this but if you use mod_perl and RT(2/3) then you can use this in httpd.conf:

PerlSetEnv DBI_PROFILE DBI::ProfileDumper::Apache

At each stop/start of Apache you'll get profiling data in your logs directory which you can analyse with dbiprof. If a mod_perl/apache process terminaties due to max accesses reached it will also dump its profile data.

For more information see dbiprof -h.

NOTE: Apache doesn't need to be in one process mode.

[http://search.cpan.org/dist/Apache-DB Apache::DProf, Apache::SmallProf]

This is useful when you're going to profile perl code.

DProf dump profile per sub
SmallProf dump profile per line

In httpd.conf

<Perl>
       use Apache::DB ();
       Apache::DB->init;
</Perl>
# comment this line if you want SmallProf
PerlModule Apache::DProf
...
# previous block should be before other perl modules
PerlRequire ...webmux.pl
...
<Location ...>
       ...
       PerlHandler RT::Mason
       # In the same location or diretory block where
       # RT::Mason configured add fixup handler
       # if you want profile each line of perl code
       # uncomment next line
       # PerlFixupHandler Apache::SmallProf
</Location>

NOTE: The server must be started with the -X to use Apache::DB

Other profilers

MasonX-Profiler

Email

get email content

You send email to RT and it fails and you think that exactly content in mail break RT. In this case you should get full MIME content of email.

Mozilla Mail variant

Send email that fails
Find it in Sent folder
Click on it
Ctrl-U
Now you should see "Source of:..." page
Copy content. It's exactly what you need.

This content can be used to check if your mailgate works fine:

open your alias files and copy RT alias
run alias as shell command, don't forget to add debug option.

cat |/opt/rt3/bin/rt-mailgate --queue ... --url ... --debug

now mailgate wait for email content on STDIN, paste content.
press Ctrl-D

RT Wiki