[rt-users] RT Performance after Perl modules upgrade on CentOS

Edward Kovarski edward.kovarski at groupkae.com
Tue Nov 20 15:30:38 EST 2007

Has anybody notices a dramatic performance decrease with any recent  
perl cpan upgrades? I've recently upgraded the CPAN modules and RT has  
taken a significant hit - performance easily dropped by 70-80%.

I haven't had a chance to look fully into it - it isn't heavily used  
currently - so I figured I'd ask if someone has perhaps run into  
it...  OS is CentOS v4.5 and the logs are peppered with the following  

Use of uninitialized value in substitution (s///) at /usr/local/rt3/ 
lib/RT/Interface/Web.pm line 632.
Use of uninitialized value in pattern match (m//) at /usr/local/rt3/ 
lib/RT/I18N.pm line 395.

These all correspond with the day that performance dropped so I am  
looking at downgrading Encode and a few other modules,

Here are my current perl modules,
Perl v5.8.5 under linux
   Apache::Session v1.84;
   Apache::Session::Generate::MD5 v2.1;
   Apache::Session::Lock::MySQL v1.00;
   Apache::Session::MySQL v1.01;
   Apache::Session::Serialize::Storable v1.01;
   Apache::Session::Store::DBI v1.02;
   Apache::Session::Store::MySQL v1.04;
   AutoLoader v5.63;
   base v2.12;
   bytes v1.01;
   Cache::Simple::TimedExpiry v0.27;
   capitalization v0.03;
   Carp v1.03;
   CGI v3.29;
   CGI::Cookie v1.28;
   CGI::Fast v1.07;
   CGI::Util v1.5;
   Class::Container v0.12;
   Class::Data::Inheritable v0.06;
   Class::ReturnValue v0.55;
   Clone v0.28;
   constant v1.12;
   Convert::ASN1 v0.21;
   Cwd v3.25;
   Data::Dumper v2.121;
   Date::Format v2.22;
   Date::Parse v2.27;
   DBD::mysql v4.005;
   DBI v1.601;
   DBIx::SearchBuilder v1.49;
   DBIx::SearchBuilder::Union v0;
   DBIx::SearchBuilder::Unique v0.01;
   Devel::StackTrace v1.15;
   Devel::StackTraceFrame v0.6;
   Devel::Symdump v2.08;
   Digest::base v1.00;
   Digest::MD5 v2.36;
   DynaLoader v1.05;
   Encode v2.23;
   Encode::Alias v2.07;
   Encode::Config v2.04;
   Encode::Encoding v2.05;
   Encode::Guess v2.02;
   Encode::Unicode v2.05;
   Errno v1.1;
   Exception::Class v1.23;
   Exception::Class::Base v1.2;
   Exporter v5.58;
   Exporter::Heavy v5.58;
   FCGI v0.67;
   Fcntl v1.05;
   File::Basename v2.73;
   File::Glob v1.03;
   File::Path v2.03;
   File::Spec v3.25;
   File::Spec::Unix v1.5;
   File::Temp v0.18;
   FileHandle v2.01;
   HTML::Element v3.23;
   HTML::Entities v1.35;
   HTML::Formatter v2.04;
   HTML::FormatText v2.04;
   HTML::Mason v1.37;
   HTML::Mason::CGIHandler v1.00;
   HTML::Mason::Exception v1.1;
   HTML::Mason::Exception::Abort v1.1;
   HTML::Mason::Exception::Compilation v1.1;
   HTML::Mason::Exception::Compilation::IncompatibleCompiler v1.1;
   HTML::Mason::Exception::Compiler v1.1;
   HTML::Mason::Exception::Decline v1.1;
   HTML::Mason::Exception::Params v1.1;
   HTML::Mason::Exception::Syntax v1.1;
   HTML::Mason::Exception::System v1.1;
   HTML::Mason::Exception::TopLevelNotFound v1.1;
   HTML::Mason::Exception::VirtualMethod v1.1;
   HTML::Mason::Exceptions v1.43;
   HTML::Parser v3.56;
   HTML::Scrubber v0.08;
   HTML::Tagset v3.10;
   HTML::TreeBuilder v3.23;
   HTTP::Date v1.47;
   I18N::LangTags v0.35;
   I18N::LangTags::Detect v1.03;
   integer v1.00;
   IO v1.23;
   IO::File v1.14;
   IO::Handle v1.27;
   IO::InnerFile v2.110;
   IO::Lines v2.110;
   IO::ScalarArray v2.110;
   IO::Seekable v1.1;
   IO::Select v1.17;
   IO::Socket v1.30;
   IO::Socket::INET v1.31;
   IO::Socket::UNIX v1.23;
   IO::WrapTie v2.110;
   IPC::Open2 v1.01;
   IPC::Open3 v1.0106;
   lib v0.5565;
   List::Util v1.19;
   Locale::Maketext v1.12;
   Locale::Maketext::Fuzzy v0.10;
   Locale::Maketext::Lexicon v0.64;
   Locale::Maketext::Lexicon::Gettext v0.15;
   Log::Dispatch v2.20;
   Log::Dispatch::Base v1.09;
   Log::Dispatch::File v1.22;
   Log::Dispatch::Output v1.26;
   Log::Dispatch::Screen v1.17;
   Log::Dispatch::Syslog v1.18;
   Mail::Address v1.77;
   Mail::Field v1.77;
   Mail::Field::AddrList v1.77;
   Mail::Field::Date v1.77;
   Mail::Header v1.77;
   Mail::Internet v1.77;
   MIME::Base64 v3.07;
   MIME::Body v5.425;
   MIME::Decoder v5.425;
   MIME::Decoder::NBit v5.425;
   MIME::Decoder::QuotedPrint v5.425;
   MIME::Entity v5.425;
   MIME::Field::ContDisp v5.425;
   MIME::Field::ConTraEnc v5.425;
   MIME::Field::ContType v5.425;
   MIME::Field::ParamVal v5.425;
   MIME::Head v5.425;
   MIME::Parser v5.425;
   MIME::QuotedPrint v3.07;
   MIME::Tools v5.425;
   MIME::Words v5.425;
   Module::Versions::Report v1.03;
   Net::LDAP v0.34;
   Net::LDAP::ASN v0.04;
   Net::LDAP::Bind v1.02;
   Net::LDAP::Constant v0.04;
   Net::LDAP::Entry v0.23;
   Net::LDAP::Filter v0.15;
   Net::LDAP::Message v1.09;
   Net::LDAP::Search v0.11;
   Net::LDAP::Util v0.11;
   overload v1.01;
   Params::Validate v0.89;
   PerlIO v1.03;
   PerlIO::scalar v0.02;
   POSIX v1.08;
   re v0.04;
   Regexp::Common v2.120;
   Regexp::Common::delimited v2.104;
   RT v3.6.5;
   RT::Interface::Email v2;
   Scalar::Util v1.19;
   SelectSaver v1.00;
   Socket v1.77;
   Storable v2.17;
   strict v1.03;
   Symbol v1.05;
   Sys::Syslog v0.23;
   Text::Autoformat v1.13;
   Text::Quoted v2.03;
   Text::Reform v1.11;
   Text::Tabs v2007.1117;
   Text::Template v1.44;
   Text::Wrapper v1.01;
   Tie::Hash v1.01;
   Time::HiRes v1.9708;
   Time::JulianDay v2003.1125;
   Time::Local v1.18;
   Time::ParseDate v2006.0814;
   Time::Timezone v2006.0814;
   Time::Zone v2.22;
   Tree::Simple v1.18;
   UNIVERSAL v1.01;
   UNIVERSAL::require v0.11;
   URI v1.35;
   URI::Escape v3.28;
   URI::URL v5.03;
   URI::WithBase v2.19;
   utf8 v1.04;
   vars v1.01;
   warnings v1.03;
   warnings::register v1.00;
   XSLoader v0.08;

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