[Catalyst] Slow template processing on debian lenny

[Terence Monteiro]

Hi,

I've been using TT for years and enjoy the features it provides. In one of
my Catalyst applications, I'm processing a template which generates HTML to
give me a table with counts taken from a hash. I'm using a lot of nested
FOREACH to generate the table.

On my machine, an ubuntu hardy, it works fast - about 2.5 seconds to
process the template. On a production server using debian lenny, it used to
take around the same amount of time. But recently, I upgraded it to libperl
5.10 and updated the different Perl modules including Template and
Catalyst::View::TT. After this upgrade, the same template takes 25 seconds
on average to process. The times I am mentioning are the times taken on the
server side, as shown by the Catalyst application debug logs.

I tried to work around the problem by bypassing C::V::TT and using the
following code to process the template inside the controller, but to no ava=
il:

  my $tmpl =3D Template->new({
    INCLUDE_PATH =3D> $c->config->{home} . '/root',
    RELATIVE =3D> 1
  });
  my $output =3D '';
  $tmpl->process('index.tt', { %{$c->stash}, c =3D> $c }, \$output);
  $c->res->body($output);

The sources.list reads:

  deb ftp://ftp.tw.debian.org/debian lenny main

The output from perl Makefile.PL is:

  *** Module::AutoInstall version 1.03
  *** Checking for Perl dependencies...
  [Core Features]
  - Catalyst                                   ...loaded. (5.7014 >=3D 5.70=
10)
  - Catalyst::Controller                       ...loaded. (0)
  - Catalyst::Action::RenderView               ...loaded. (0.08 >=3D 0.04)
  - Catalyst::Plugin::ConfigLoader             ...loaded. (0.21 >=3D 0.14)
  - Catalyst::Plugin::Static::Simple           ...loaded. (0.20 >=3D 0.20)
  - Catalyst::Plugin::Prototype                ...loaded. (1.33 >=3D 1.33)
  - Catalyst::Plugin::Session                  ...loaded. (0.19 >=3D 0.14)
  - Catalyst::Plugin::Session::Store::FastMmap ...loaded. (0.05 >=3D 0.02)
  - Catalyst::Plugin::Session::State::Cookie   ...loaded. (0.09 >=3D 0.07)
  - Catalyst::Plugin::Unicode                  ...loaded. (0.8 >=3D 0.2)
  - Catalyst::View::PNGTTGraph                 ...loaded. (0.02 >=3D 0.02)
  - Catalyst::View::TT                         ...loaded. (0.27 >=3D 0.25)
  - Catalyst::View::Download                   ...loaded. (0.04 >=3D 0.04)
  - Data::Page                                 ...loaded. (2.00 >=3D 2.00)
  - Date::Calc                                 ...loaded. (5.4 >=3D 5.4)
  - Date::Formatter                            ...loaded. (0.09 >=3D 0.09)
  - Date::Manip                                ...loaded. (5.54 >=3D 0.04)
  - DBI                                        ...loaded. (1.607 >=3D 1.57)
  - FindBin                                    ...loaded. (1.49 >=3D 1.47)
  - HTML::FormatText                           ...loaded. (2.04 >=3D 2.04)
  - HTML::TreeBuilder                          ...loaded. (3.23 >=3D 3.23)
  - MIME::Entity                               ...loaded. (5.420 >=3D 5.420)
  - Module::Install                            ...loaded. (0.75 >=3D 0.68)
  - Template                                   ...loaded. (2.20 >=3D 2.19)
  - Template::Plugin::Date                     ...loaded. (2.77 >=3D 2.77)
  - Template::Plugin::HtmlToText               ...loaded. (0.03 >=3D 0.02)
  - Time::Local                                ...loaded. (1.18 >=3D 1.17)
  - YAML                                       ...loaded. (0.66)
  *** Module::AutoInstall configuration finished.
  Writing Makefile for tirt

So though my modules are sufficiently recent, template processing is
extremely slow. Please help if you have faced a similar problem or have an
idea. I've attached the TT template.

-- =

Thanks and Regards,
Terence Monteiro.

DeepRoot Linux,
Ph: +91 (80) 4112 4781 / 85.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.scsys.co.uk/pipermail/catalyst/attachments/20080915/cdec4=
77b/summary.htm