From CGI to mod_perl 2.0, Fast!

Loading...

Flash Player 9 (or above) is needed to view presentations.
We have detected that you do not have it on your computer. To install it, go here.

0 comments

Post a comment

    Post a comment
    Embed Video
    Edit your comment Cancel

    Notes on slide 1

    1 Group

    From CGI to mod_perl 2.0, Fast! - Presentation Transcript

    1. From CGI to mod_perl 2.0, Fast! Philippe M. Chiasson gozer@ectoplasm.org Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    2. Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    3. Fast! $> wget http://perl.apache.org/download/mod_perl-2.0-current.tar.gz $> tar zxvf mod_perl-2.0-current.tar.gz [...] $> cd mod_perl-2.0.*/ $> perl Makefile.PL MP_APXS=`which apxs` Configuring Apache/2.0.52 mod_perl2/2.0.2 Perl/v5.8.6 [...] $> make cd \"src/modules/perl\" && make [...] $> make test $> make install $> perl -pi -e’s/cgi_module/perl_module/g’ `apxs -q SYSCONFDIR`/httpd.conf $> perl -pi -e’s/mod_cgi/mod_perl/g’ `apxs -q SYSCONFDIR`/httpd.conf $> perl -pi -e’s/cgi-script/perl-script/g’ `apxs -q SYSCONFDIR`/httpd.conf $> `apxs -q SBINDIR`/apachectl configtest Syntax OK $> `apxs -q SBINDIR`/apachectl restart Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    4. Faster! $> wget -O- http://gozer.ectoplasm.org/talks/ApacheCon/2005/US/mod_perl-2.0-cgi-fast/fast.sh | sh -x Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    5. Better! $> yum install mod_perl $> apt-get mod_perl $> fink install mod_perl $> pkg_add -r mod_perl $> emerge mod_perl Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    6. Thank You! Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    7. Do we still have time? Let’s get serious! Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    8. You have • Apache 2.x • mod_cgi • A bunch of Perl CGI scripts • A working web site • A good job Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    9. Common Gateway Interface • CGI is simple • CGI is easy • CGI just works Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    10. How about mod_perl? • mod_perl is simple • mod_perl is easy • mod_perl just works Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    11. How about mod_perl? • mod_perl is simple • mod_perl is easy • mod_perl just works BETTER Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    12. How about mod_perl? • mod_perl is simple • mod_perl is easy • mod_perl just works FASTER Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    13. How about mod_perl? • mod_perl is simple • mod_perl is easy • mod_perl just works EASIERer Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    14. But why switch? • CPU cycles • Memory • Servers • $$$ • Apache::* module on CPAN Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    15. The CGI model • Forking • Startup • Teardown Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    16. The CGI model • httpd fork()s • httpd exec(/var/www/cgi-bin/myscript.pl) • OS find #!/usr/bin/perl in /var/www/cgi-bin/myscript.pl • OS fork()s • OS exec()s /usr/bin/perl • Perl opens, initializes and parses myscript.pl • Perl runs the script Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    17. The CGI model 2x fork() 2x exec() Perl startup Perl shutdown EXPENSIVE Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    18. The mod_perl model • Embedded Perl • One time startup • One time teardown Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    19. The mod_perl model • Perl locates the correct subroutine to invoke • Perl calls it CHEAP er Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    20. Getting there from here Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    21. mod_cgi setup LoadModule cgi_module libexec/mod_cgi.so ScriptAlias /cgi-bin/ /var/www/cgi-bin Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    22. mod_cgi setup ScriptAlias is just shorthand LoadModule cgi_module libexec/mod_cgi.so Alias /cgi-bin /var/www/cgi-bin <Location /cgi-bin> SetHandler cgi-script Option +ExecCGI </Location> Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    23. mod_cgi setup /var/www/cgi-bin/hello.pl #!/usr/bin/perl use CGI; my $q = new CGI; print $q->header('text/html'); print <<\"EOF\"; <html><body> <h1>Hello world!</h1> <pre> GATEWAY_INTERFACE: $ENV{GATEWAY_INTERFACE} MOD_PERL: $ENV{MOD_PERL} </pre> </body></html> EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    24. mod_cgi setup Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    25. How fast is that ? • Apache Bench (ab) • Nice benchmarking tool • Will work for us nicely • Comes with Apache Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    26. How fast is that ? $> ab -c1 -n50 http://localhost:8529/cgi-bin/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 5.57 [#/sec] (mean) Time per request: 179.448 [ms] (mean) Transfer rate: 1.67 [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    27. mod_perl time $> wget http://perl.apache.org/download/mod_perl-2.0-current.tar.gz $> tar zxvf mod_perl-2.0-current.tar.gz [...] $> cd mod_perl-2.0.*/ $> perl Makefile.PL MP_APXS=`which apxs` Configuring Apache/2.0.52 mod_perl2/2.0.x Perl/v5.8.6 [...] $> make cd \"src/modules/perl\" && make [...] $> make test $> make install $> perl -pi -e’s/cgi_module/perl_module/g’ `apxs -q SYSCONFDIR`/httpd.conf $> perl -pi -e’s/mod_cgi/mod_perl/g’ `apxs -q SYSCONFDIR`/httpd.conf $> perl -pi -e’s/cgi-script/perl-script/g’ `apxs -q SYSCONFDIR`/httpd.conf $> `apxs -q SBINDIR`/apachectl configtest Syntax OK $> `apxs -q SBINDIR`/apachectl restart Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    28. mod_perl time Download & unpack $> wget http://perl.apache.org/download/mod_perl-2.0-current.tar.gz $> tar zxvf mod_perl-2.0-current.tar.gz [...] $> cd mod_perl-2.0.*/ Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    29. mod_perl time Configure $> /usr/bin/perl Makefile.PL MP_APXS=/usr/sbin/apxs Configuring Apache/2.0.52 mod_perl2/2.0.x Perl/v5.8.6 [...] Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    30. mod_perl time Build, test, install $> make $> make test $> make install Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    31. mod_perl time Check your distro! mod_perl is supported by lots of them Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    32. mod_perl time httpd.conf LoadModule cgi_module modules/mod_cgi.so LoadModule perl_module modules/mod_perl.so Alias /cgi-bin /var/www/cgi-bin Alias /perlrun /var/www/cgi-bin <Location /cgi-bin> SetHandler cgi-script Option +ExecCGI </Location> <Location /perlrun> SetHandler perl-script Option +ExecCGI PerlHandler ModPerl::PerlRun </Location> Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    33. mod_perl time • SetHandler • PerlHandler • ModPerl::PerlRun Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    34. mod_perl time $> apachectl restart [notice] Apache/2.0.52 (Unix) mod_perl/2.0.x Perl/v5.8.7 configured Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    35. mod_perl time Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    36. it works! • $ENV{MOD_PERL} = “mod_perl/2.0.x”; Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    37. How fast is THAT ? $> ab -c1 -n50 http://localhost:8529/perlrun/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 83.15 [#/sec] (mean) Time per request: 12.027 [ms] (mean) Transfer rate: 26.61 [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    38. How fast is THAT ? mod_cgi $> ab -c1 -n50 http://localhost:8529/cgi-bin/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 5.57 [#/sec] (mean) Time per request: 179.448 [ms] (mean) Transfer rate: 1.67 [Kbytes/sec] received ModPerl::PerlRun $> ab -c1 -n50 http://localhost:8529/perlrun/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 83.15 [#/sec] (mean) Time per request: 12.027 [ms] (mean) Transfer rate: 26.61 [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    39. How fast is THAT ? mod_cgi $> ab -c1 -n50 http://localhost:8529/cgi-bin/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 5.57 [#/sec] (mean) Time per request: 179.448 [ms] (mean) Transfer rate: 1.67 [Kbytes/sec] received ModPerl::PerlRun $> ab -c1 -n50 http://localhost:8529/perlrun/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 15x(mod_cgi) [#/sec] (mean) Time per request: 15x(mod_cgi) [ms] (mean) Transfer rate: 16x(mod_cgi) [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    40. ModPerl::PerlRun • mod_perl’s bundled module • closest CGI emulation available Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    41. ModPerl::PerlRun On every request for the script: • Found • Loaded • Parsed • BEGIN {} • Executed • END {} • Destroyed Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    42. ModPerl::Registry httpd.conf Alias /cgi-bin /var/www/cgi-bin Alias /perlrun /var/www/cgi-bin Alias /registry /var/www/cgi-bin <Location /cgi-bin> SetHandler cgi-script Option +ExecCGI </Location> <Location /perlrun> SetHandler perl-script Option +ExecCGI PerlHandler ModPerl::PerlRun </Location> <Location /perlrun> SetHandler perl-script Option +ExecCGI PerlHandler ModPerl::Registry </Location> Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    43. ModPerl::Registry Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    44. How fast is THAT ? $> ab -c1 -n50 http://localhost:8529/registry/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 156.37 [#/sec] (mean) Time per request: 6.395 [ms] (mean) Transfer rate: 50.04 [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    45. How fast is THAT ? mod_cgi $> ab -c1 -n50 http://localhost:8529/cgi-bin/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 5.57 [#/sec] (mean) Time per request: 179.448 [ms] (mean) Transfer rate: 1.67 [Kbytes/sec] received ModPerl::PerlRun $> ab -c1 -n50 http://localhost:8529/perlrun/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 83.15 [#/sec] (mean) Time per request: 12.027 [ms] (mean) Transfer rate: 26.61 [Kbytes/sec] received ModPerl::Registry $> ab -c1 -n50 http://localhost:8529/registry/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 156.37 [#/sec] (mean) Time per request: 6.395 [ms] (mean) Transfer rate: 50.04 [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    46. How fast is THAT ? mod_cgi $> ab -c1 -n50 http://localhost:8529/cgi-bin/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 5.57 [#/sec] (mean) Time per request: 179.448 [ms] (mean) Transfer rate: 1.67 [Kbytes/sec] received ModPerl::PerlRun $> ab -c1 -n50 http://localhost:8529/perlrun/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 15x(mod_cgi) [#/sec] (mean) Time per request: 15x(mod_cgi) [ms] (mean) Transfer rate: 16x(mod_cgi) [Kbytes/sec] received ModPerl::Registry $> ab -c1 -n50 http://localhost:8529/registry/hello.pl Benchmarking 127.0.0.1 (be patient).....done Requests per second: 28x(mod_cgi) [#/sec] (mean) Time per request: 28x(mod_cgi) [ms] (mean) Transfer rate: 30x(mod_cgi) [Kbytes/sec] received Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    47. ModPerl::Registry • mod_perl’s bundled module • Faster, but CGI emulation laking Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    48. ModPerl::Registry On every request for the script: • Load from file if: • Not found in cache • Cache entry is older than the file • BEGIN {} • Executed • END {} Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    49. ModPerl::(PerlRun|Registry) • Try ModPerl::Registry first • faster • might break some CGIs • Try ModPerl::PerlRun after • slower • might break CGIs some Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    50. ModPerl::(PerlRun|Registry) • Simple Perl modules • Designed to run perl scripts from mod_perl pretending it’s a CGI • Derives from ModPerl::RegistryCooker • New ones can be made in a pinch Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    51. package ModPerl::PerlRun; use base qw(ModPerl::RegistryCooker); sub handler : method { my $class = (@_ >= 2) ? shift : __PACKAGE__; my $r = shift; return $class->new($r)->default_handler(); } my $parent = 'ModPerl::RegistryCooker'; my %aliases = ( new => 'new', init => 'init', default_handler => 'default_handler', run => 'run', can_compile => 'can_compile', make_namespace => 'make_namespace', namespace_root => 'namespace_root', namespace_from => 'namespace_from_filename', is_cached => 'FALSE', should_compile => 'TRUE', flush_namespace => 'flush_namespace_normal', cache_table => 'cache_table_common', cache_it => 'NOP', read_script => 'read_script', shebang_to_perl => 'shebang_to_perl', get_script_name => 'get_script_name', chdir_file => 'NOP', get_mark_line => 'get_mark_line', compile => 'compile', error_check => 'error_check', should_reset_inc_hash => 'TRUE', strip_end_data_segment => 'strip_end_data_segment', convert_script_to_compiled_handler => 'convert_script_to_compiled_handler', ); $aliases{$_} = $parent . \"::\" . $aliases{$_} for keys %aliases; __PACKAGE__->install_aliases(\\%aliases); Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    52. CGI emulation • It’s an emulation • It ain’t the real thing • things can go wonky Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    53. I remember #!/usr/bin/perl use CGI; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    54. #!/usr/bin/perl I remember use CGI; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF $> GET http://localhost:8529/cgi-bin/count.pl counted 1 $> GET http://localhost:8529/cgi-bin/count.pl counted 1 $> GET http://localhost:8529/cgi-bin/count.pl counted 1 Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    55. #!/usr/bin/perl I remember use CGI; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF $> GET http://localhost:8529/registry/count.pl counted 1 $> GET http://localhost:8529/registry/count.pl counted 2 $> GET http://localhost:8529registry/count.pl counted 3 $> GET http://localhost:8529registry/count.pl counted 1 $> GET http://localhost:8529registry/count.pl counted 4 Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    56. That can’t be right? #!/usr/bin/perl use CGI; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    57. That can’t be right? • Code is cached • Perl sticks around • Great for speed • Globals are suddently VERY GLOBAL Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    58. That can’t be right? #!/usr/bin/perl use CGI; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    59. That can’t be right? #!/usr/bin/perl use CGI; my $q = new CGI; print $q->header('text/plain'); $main::counter++; # GLOBAL! print <<\"EOF\"; counted $counter EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    60. That can be right! #!/usr/bin/perl use CGI; my $counter; my $q = new CGI; print $q->header('text/plain'); $counter++; print <<\"EOF\"; counted $counter EOF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    61. Globals will stick • Globals will stick around • Use my • Try ModPerl::PerlRun Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    62. CGI emulation • It’s an emulation • It ain’t the real thing • things can go wonky Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    63. I still remember #!/usr/bin/perl $> GET http://localhost:8529/registry/count.pl Counter: 1 use CGI; $> GET http://localhost:8529/registry/count.pl use strict; use warnings; Counter: 2 $> GET http://localhost:8529/registry/count.pl my $q = new CGI; Counter: 3 my $counter; $> GET http://localhost:8529/registry/count.pl Counter: 1 print $q->header('text/plain'); $> GET http://localhost:8529/registry/count.pl Counter: 4 counter_up(); sub counter_up { $counter++; print \"Counter: $counter\\n\"; } Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    64. But, what the..? • I used my so it’s not a global... • To Perl, all code lives in subroutines • mod_perl turns scripts into subroutines • subroutines can create closures Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    65. subification * #!/usr/bin/perl use CGI; use strict; use warnings; my $q = new CGI; my $counter; print $q->header('text/plain'); counter_up(); sub counter_up { $counter++; print \"Counter: $counter\\n\"; } * the process of making a subroutine, obviously Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    66. subification * • subroutine needs a name • filepath is a convenient naming * the process of making a subroutine, obviously Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    67. subification * /var/www/cgi-bin/hello.pl ModPerl::ROOT::ModPerl::Registry::var_www_cgi_2dbin_hello_2epl::handler Prefix Path Sub * the process of making a subroutine, obviously Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    68. sub subification * ModPerl::ROOT::ModPerl::Registry::var_www_cgi_2dbin_count_2epl::handler { package ModPerl::ROOT::ModPerl::Registry::var_www_cgi_2dbin_count_2epl; no warnings; local $0 = '/var/www/cgi-bin/count.pl’; use CGI; use strict; use warnings; my $q = new CGI; my $counter; print $q->header('text/plain'); counter_up(); sub counter_up { $counter++; print \"Counter: $counter\\n\"; } } the process of making a subroutine, obviously * Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    69. closures • Closures are a Perl feature • Come to be when creating subs • Normally not an issue • mod_perl can create some without telling you • man perlref for more Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    70. I still remember #!/usr/bin/perl use CGI; 2 warning signs to look for: use strict; use warnings; globals my $q = new CGI; my $counter; error_log: print $q->header('text/plain'); Variable \"$counter\" will not stay shared at /var/www/cgi-bin/ counter_up(); count.pl sub counter_up { $counter++; # GLOBAL print \"Counter: $counter\\n\"; } Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    71. I still remember #!/usr/bin/perl use CGI; use strict; use warnings; Just remember that globals in general are to my $q = new CGI; my $counter; print $q->header('text/plain'); watch out for counter_up($counter); sub counter_up { my $counter = shift; $counter++; # GLOBAL print \"Counter: $counter\\n\"; } Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    72. Good advice • use strict; • use warnings; • avoid globals • look for hints in your error_log file Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    73. CGI emulation • It’s an emulation • It ain’t the real thing • things can go wonky Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    74. I used to work #!/usr/bin/perl #countlib.pl use CGI; use strict; use strict; my $counter = 0; use warnings; sub counter_up { require \"countlib.pl\"; $counter++; print “Counter: $counter\\n”; my $q = new CGI; } print $q->header('text/plain'); counter_up(); Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    75. I used to work error_log: [Sun Oct 23 21:37:44 2005] [error] Can't locate countlib.pl in @INC (@INC contains: [...]) at /var/www/cgi-bin/hello.pl line 7.\\n Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    76. I used to work #!/usr/bin/perl use CGI; use strict; use warnings; use Cwd; my $q = new CGI; print $q->header('text/plain'); print “Cwd: “, cwd(), “\\n”; $> GET http://localhost:8529/cgi-bin/cwd.pl Cwd: /var/www/cgi-bin $> GET http://localhost:8529/registry/cwd.pl Cwd: / Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    77. I used to work • mod_cgi • fork()s • chdir()s to the script’s directory Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    78. Cwd • mod_perl • doesn’t fork() • doesn’t chdir()s • could chdir()s Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    79. Cwd • Cwd() is a process proprety • Apache threaded MPMs • chdir() isn’t thread-safe • mod_perl doesn’t try to break things Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    80. Cwd • You can fix your scripts • use lib(); • require “/fully/qualfied/lib/path.pl”; Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    81. Cwd • If your MPM is Prefork: • ModPerl::RegistryPrefork • ModPerl::PerlRunPrefork Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    82. It ain’t magical! • use strict/warnings • Think about globals • watch the error_log Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    83. More info • mod_perl User’s mailing-list – http://perl.apache.org/maillist/modperl.html – <modperl@perl.apache.org> • mod_perl Developer's Cookbook – http://www.modperlcookbook.org/ • – http://www.modperlbook.org/ Practical mod_perl • – http://perl.apache.org/ mod_perl at the ASF Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/
    84. Thank You! Slides and bonus material: http://gozer.ectoplasm.org/talk/ Philippe M. Chiasson - http://gozer.ectoplasm.org/talks/

    + Philippe M. ChiassonPhilippe M. Chiasson, 2 years ago

    custom

    2550 views, 0 favs, 1 embeds more stats

    More info about this document

    CC Attribution-NonCommercial-ShareAlike LicenseCC Attribution-NonCommercial-ShareAlike LicenseCC Attribution-NonCommercial-ShareAlike License

    Go to text version

    • Total Views 2550
      • 2539 on SlideShare
      • 11 from embeds
    • Comments 0
    • Favorites 0
    • Downloads 14
    Most viewed embeds
    • 11 views on http://gozer.ectoplasm.org

    more

    All embeds
    • 11 views on http://gozer.ectoplasm.org

    less

    Flagged as inappropriate Flag as inappropriate
    Flag as inappropriate

    Select your reason for flagging this presentation as inappropriate. If needed, use the feedback form to let us know more details.

    Cancel
    File a copyright complaint
    Having problems? Go to our helpdesk?

    Categories

    Tags

    Groups / Events

    -->
    What's New

    © 2009 SlideShare Inc. All rights reserved.