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Index: P

packages

CORE::: 6.4.1. exit( )

creating, code execution advantages: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

declaring names, <Perl> sections: 4.4.4. Declaring Package Names in Perl Sections

faulty, creating for debugging: 21.6.2. Creating a Faulty Package

namespace conflicts: 6.3.3.2. A second faulty scenario

naming, configuration files and: 6.8.2.4.1. Writing configuration files

packets, speed and: 7.1. Looking at the Big Picture

parameters

AxKit forms: E.3.1. Handling Form Parameters

callback hooks, enabling: 3.1.2. Activating Callback Hooks

CGI.pm, handling with: 1.1.2. The Common Gateway Interface Specification

configuration: 3.1.1. Controlling the Build Process

EVERYTHING: 3. Installing mod_perl

mod_perl non-standard features, enabling: 3.1.4. Enabling Extra Features

mod_perl standard features, enabling: 3.1.3. Activating Standard API Features

supplying from file: 3.1.5. Reusing Configuration Parameters

parent option, PerlOptions directive: 24.5.6.3. Parent

parent processes: 1.2.1. Forking

freeing: 10.2.2. Freeing the Parent Process

identifying: 5.3.3. Finding the Right Apache PID

zombie processes and: 10.2.4. Avoiding Zombie Processes

ParseHeaders option, PerlOptions directive: 24.5.6.7. ParseHeaders

parsing key-value pairs: 13.2. Apache::args Versus Apache::Request::param Versus CGI::param

passing variables

by value: 14.2.5. Passing Variables

to subroutines: 14.2.5. Passing Variables

pattern matching (regular expressions)

optimizing: 6.5.3. Compiled Regular Expressions

repeated matching: 6.5.3.1. Matching patterns repeatedly

performance

Apache termination/restart, optimization: 5.3.2. Speeding Up Apache's Termination and Restart

Apache::DBI module

mysql_store_result: 20.2.4. mysql_use_result Versus mysql_store_result Attributes

mysql_use_results: 20.2.4. mysql_use_result Versus mysql_store_result Attributes

preopening connections: 20.2.1. Preopening DBI Connections

record-retrieval: 20.2.3. Efficient Record-Retrieval Techniques

skipping ping( ): 20.2.2. Improving Speed by Skipping ping( )

Apache::Registry: 13.1. Apache::Registry PerlHandler Versus Custom PerlHandler

compared to custom handlers: 13.1. Apache::Registry PerlHandler Versus Custom PerlHandler

benchmarking scripts: 1.3.1. Running CGI Scripts with mod_perl

benchmarks: 9. Essential Tools for Performance Tuning

caching compared to generating data: 13.10. Caching and Pre-Caching

caching data, Memoize module: 13.11. Caching with Memoize

child processes, limiting resources used by: 5.11.3. Limiting Resources Used by Apache Child Processes

code profiling: 9.5. Code Profiling Techniques

Devel::DProf: 9.5.1. Profiling with Devel::DProf

Devel::SmallProf: 9.5.2. Profiling with Devel::SmallProf

configuration

importance of tweaking: 11. Tuning Performance by Tweaking Apache's Configuration

information resources: 4.12. References

configuration files, exported variables and: 6.8.2.4.1. Writing configuration files

critical sections, optimizing: 6.9.2.1. Critical section

diagnostics pragma overhead considerations: 21.1.1.1. The diagnostics pragma

DSO mechanism and: 3.1. Configuring the Source

files, printing: 13.9. Printing Unmodified Files

forking, drawbacks of: 1.2.3. Performance Drawbacks of Forking

imported symbols, memory considerations: 13.5.2. Importing Symbols

KeepAlive directives: 11.4. KeepAlive

memory page swapping issues: 5.11.2. Swapping Prevention

methods compared to functions: 13.6.3. Are All Methods Slower Than Functions?

mod_perl 1.0 compatibility issues: 25.1.3. Code Porting

mod_perl, memory requirements: 1.3. The Development of mod_perl 1.0

mod_status module and: 21.9.2. mod_status

modules, memory considerations: 13.5.1. "Bloatware" Modules

operating system selection: 8.1. Choosing the Right Operating System

Perl interpreter, monitoring status: 9.4. Apache::Status and Measuring Code Memory Usage

prepare( ) statements: 20.2.6. Caching prepare( ) Statements

print( ) function: 13.3. Buffered Printing and Better print( ) Techniques

process, memory consumption: 9.3. Process Memory Measurements

proxy servers, httpd accelerator mode: 12.5. Adding a Proxy Server in httpd Accelerator Mode

regular expressions

optimizing: 6.5.3. Compiled Regular Expressions

repeated matching: 6.5.3.1. Matching patterns repeatedly

relational databases and: 20.2.5. Running Two or More Relational Databases

resource usage issues: 3.9.5. Nonstandard mod_perl-Enabled Apache Installation

resources: 23.3.9. Performance and Scalability

runtime, Perl compared to C: 13.12. Comparing Runtime Performance of Perl and C

speed and: 7.1. Looking at the Big Picture

stat( ) calls, reducing: 11.6. Reducing the Number of stat( ) Calls Made by Apache

static object request rate: 12.2. Standalone mod_perl-Enabled Apache Server

strings

concatenation: 13.4. Interpolation, Concatenation, or List

lists: 13.4. Interpolation, Concatenation, or List

subroutines: 13.6.1. The Overhead with Light Subroutines

troubleshooting, questions to ask: 7.2. Asking the Right Questions

two server approach: 12.3. One Plain and One mod_perl-Enabled Apache Server

warnings, enabling: 6.5.2.1. Warnings

Perl

-D runtime option (debugging): 21.8.2. -D Runtime Option

code

benchmarking: 9.2. Perl Code Benchmarking

combining with other languages: 13.12.3. Inline.pm

coding idioms: 21.5.5. The Importance of a Good, Concise Coding Style

configuration files, creating: 4.4.3. Cheating with Apache->httpd_conf

configuration, saving: 4.4.6. Saving the Perl Configuration

debugging

compiling for: 21.6.1. Getting Ready to Debug

21.6.1. Getting Ready to Debug

overview: 21.5. Debugging Perl Code

syntax errors: 21.5.1. Locating and Correcting Syntax Errors

documentation: 6.1.1. Accessing Documentation

exit( ) function: 6.4.1. exit( )

extensions, creating with XS and 2hxs: 13.12.1. Building Perl Extensions with XS and h2xs

handlers: 1.4.2. mod_perl 1.0 and the mod_perl API

interfaces

Apache API: 24.3.2. Perl Interface to the APR and Apache APIs

APR API: 24.3.2. Perl Interface to the APR and Apache APIs

mailing list information: 23.3.3. Perl

method handlers: 4.2.8. Perl Method Handlers

mod_perl requirements: 2.1. Installing mod_perl 1.0 in Three Steps

mod_rewrite: A.10. mod_rewrite in Perl

modules

identifying nonstandard directories: 3.9.2. Finding Modules Installed in Nonstandard Directories

installing to nonstandard directories: 3.9.1. Installing Perl Modules into a Nonstandard Directory

modifying @INC variable for nonstandard directories: 3.9.2.1. Modifying @INC

modifying PERL5LIB variable for nonstandard directories: 3.9.2.2. Using the PERL5LIB environment variable

new features: 24.2. What's New in Perl 5.6.0-5.8.0

resources for: 23.3.3. Perl

runtime performance compared to C: 13.12. Comparing Runtime Performance of Perl and C

server configuration

Apache::ReadConfig: 4.4.2. Breaking Out of <Perl> Sections

overview: 4.4. Apache Configuration in Perl

<Perl> section: 4.4.1. Constructing <Perl> Sections

symbol table, accessing: 21.8.4. Devel::Symdump and Apache::Symdump

trace, diagnosing hanging processes: 21.7.4.1. Using the Perl trace

version, determining: 3.1. Configuring the Source

Perl interfaces, DBM: 19. DBM and mod_perl

perl Makefile.PL command: 3.1.1. Controlling the Build Process

Perl Module Mechanics web site: 6.13. References

<Perl> section, constructing: 4.4.1. Constructing <Perl> Sections

PerlAccessHandler, automatic routine maintenance and: 5.8.4. Scheduled Routine Maintenance

PerlAddVar directive: 4.2.11. PerlSetVar and PerlAddVar

Perl/CGI resources: 23.3.4. Perl/CGI

PerlChildExitHandler directive: 4.2.4. Perl*Handlers

25.2.1.4. PerlChildExitHandler

PerlChildInitHandler directive: 4.2.4. Perl*Handlers

25.2.1.3. PerlChildInitHandler

PerlCleanupHandler directive: 10.2. Forking and Executing Subprocessesfrom mod_perl

PERL_CONNECTION_API parameter: 3.1.3. Activating Standard API Features

perldb

basic operation: 21.5.6. Introduction to the Perl Debugger

breakpoints: 21.5.6. Introduction to the Perl Debugger

listing: 21.5.6. Introduction to the Perl Debugger

removing: 21.5.6. Introduction to the Perl Debugger

enabling: 21.5.6. Introduction to the Perl Debugger

21.5.6. Introduction to the Perl Debugger

listing code lines: 21.5.6. Introduction to the Perl Debugger

single stepping: 21.5.6. Introduction to the Perl Debugger

PERLDB_OPTS environment variable: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

PERL_DEBUG configuration parameter: 3.1.1. Controlling the Build Process

perl_destruct( ) function: 5.3.2. Speeding Up Apache's Termination and Restart

PERL_DESTRUCT_LEVEL={1,2} configuration parameter: 3.1.1. Controlling the Build Process

PERL_DIRECTIVE_HANDLERS parameter: 3.1.4. Enabling Extra Features

PerlDispatchHandler directive: 4.2.4. Perl*Handlers

perldoc utility: 6.1.1. Accessing Documentation

perlfaq manpages: 6.1.1. Accessing Documentation

PERL_FILE_API parameter: 3.1.3. Activating Standard API Features

PerlFixupHandler, debugging code: 21.5.9. Interactive mod_perl Debugging

PerlFreshRestart directive: 4.2.9. PerlFreshRestart

mod_perl 2.0 and: 25.1.2.6. PerlFreshRestart

troubleshooting: 22.4.1. Evil Things Might Happen When Using PerlFreshRestart

PerlHandler directive (<Location> section): 4.2.2. <Location /perl> Sections

Perl*Handler directives: 4.2.4. Perl*Handlers

PerlHandler, MIME type and: A.11. Setting PerlHandler Based on MIME Type

Perl*Handler option, PerlOptions directive: 24.5.6.4. Perl*Handler

PerlInterpreters: 24.3.1. Thread Support

PERL5LIB variable, modifying for nonstandard directories: 3.9.2.2. Using the PERL5LIB environment variable

PERL_LOG_API parameter: 3.1.3. Activating Standard API Features

PERL_METHOD_HANDLERS parameter: 3.1.4. Enabling Extra Features

PerlModule directive: 4.2.3. PerlModule and PerlRequire

loading modules: 10.1.3. Preloading Perl Modules at Server Startup

Perl_newAV, undefined reference errors: 3.2.2.1. Undefined reference to `Perl_newAV'

PerlOpenLogsHandler directive: 25.2.1.1. PerlOpenLogsHandler

PerlOptions +/-ParseHeaders directive: 25.1.2.2. PerlSendHeader

PerlOptions +/-SetupEnv directive: 25.1.2.3. PerlSetupEnv

PerlOptions directive, mod_perl configuration: 24.5.6. PerlOptions Directive

PerlPassEnv directive: 4.2.10. PerlSetEnv and PerlPassEnv

PerlPostConfigHandler directive: 25.2.1.2. PerlPostConfigHandler

PerlPreConnectionHandler directive: 25.2.2.1. PerlPreConnectionHandler

PerlProcessConnectionHandler directive: 25.2.2.2. PerlProcessConnectionHandler

protocol handlers and: 25.2.2.2.1. Socket-based protocol module

perlref manpage, references and: 14.2.5. Passing Variables

PerlRequire directive: 4.2.3. PerlModule and PerlRequire

httpd.conf: 10.1.3. Preloading Perl Modules at Server Startup

loading modules: 10.1.3. Preloading Perl Modules at Server Startup

PerlResponseHandler directive: 25.1.2.1. PerlHandler

HTTP request phase: 25.2.3. HTTP Request Phases

PerlRestartHandler directive: 4.2.4. Perl*Handlers

PERL_SECTIONS parameter: 3.1.4. Enabling Extra Features

PerlSendHeader, determining status: 6.11. Generating Correct HTTP Headers

PerlSendHeader directive (<Location> section): 4.2.2. <Location /perl> Sections

PERL_SERVER_API parameter: 3.1.3. Activating Standard API Features

PerlSetEnv directive: 4.2.10. PerlSetEnv and PerlPassEnv

PerlSetupEnv directive: 11.5. PerlSetupEnv

PerlSetupEnv directives: 4.2.12. PerlSetupEnv

PerlSetVar directive: 4.2.11. PerlSetVar and PerlAddVar

PERL_SSI parameter: 3.1.4. Enabling Extra Features

PERL_STACKED_HANDLERS parameter: 3.1.4. Enabling Extra Features

PERL_STATIC_EXTS configuration parameter: 3.1.1. Controlling the Build Process

PERL_TABLE_API parameter: 3.1.3. Activating Standard API Features

PerlTaintCheck directive: 4.2.13. PerlWarn and PerlTaintCheck

6.5.2.2. Taint mode

Perl/TK, debugger: 21.5.7. Interactive Perl Debugging Under mod_cgi

PERL_TRACE configuration parameter: 3.1.1. Controlling the Build Process

21.4. Tracing mod_perl-Specific Perl Calls

PerlTransHandler

creating custom: 11.6. Reducing the Number of stat( ) Calls Made by Apache

overriding: 11.6. Reducing the Number of stat( ) Calls Made by Apache

PERL_URI_API parameter: 3.1.3. Activating Standard API Features

PERL_UTIL_API parameters: 3.1.3. Activating Standard API Features

PerlWarn directive: 4.2.13. PerlWarn and PerlTaintCheck

21.1.1. The Importance of Warnings

permissions, script directory, setting: 2.5. Preparing the Scripts Directory

persistence, global variables: 6.4.3. Global Variable Persistence

persistent connections, databases

Apache::DBI and: 20.1. Persistent Database Connections with Apache::DBI

Web interfaces: 20.1. Persistent Database Connections with Apache::DBI

phases (Apache), mod_perl 2.0 support: 25.2. New Apache Phases and Corresponding Perl*Handlers

PHP, mod+perl installation with: 3.6.1. Installing mod_perl with PHP

PIDs

determining for processes: 5.3. Using kill to Control Processes

identifying: 5.3.3. Finding the Right Apache PID

multiple developers and: 5.9.1. Starting a Personal Server for Each Developer

ping( ), skipping in Apache::DBI module: 20.2.2. Improving Speed by Skipping ping( )

PL_perl_destruct_level, undefined reference errors: 3.1.8.3. Undefined reference to `PL_perl_destruct_level'

plug-in modules, converting from CGI script: D.8.3. Hangman Plug-in

port-based virtual hosts: 12.10.1. Virtual Host Flavors

port forwarding

information web site: 5.12. References

upgrading servers with: 5.8.2.2.2. Upgrading a live server with port forwarding

port numbers, publishing: 4.9.1. Publishing Port Numbers Other Than 80

porting (see migration)

POST method

HTML forms: 1.1.2. The Common Gateway Interface Specification

REQUEST_METHOD environment variable: 1.1.3. Apache CGI Handling with mod_cgi

post-processing handler, terminating child processes: 6.4.1. exit( )

post-read-request (Apache request processing): 1.4. Apache 1.3 Request Processing Phases

POST requests: 16.4.4. POST Requests

redirecting: A.3. Redirecting POST Requests

reusing data: A.2. Reusing Data from POST Requests

post_config phase: 25.2. New Apache Phases and Corresponding Perl*Handlers

25.2.1.2. PerlPostConfigHandler

pragmas

constant, print( ) call debugging and: 21.5.3. Using print( ) for Debugging

strict, importance of: 6.1.2. The strict Pragma

vars, global variables and: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

warnings: 6.5.2.1. Warnings

21.1.1. The Importance of Warnings

pre-caching data: 13.10. Caching and Pre-Caching

preallocating memory: 10.1.6. Memory Preallocation

pre_config phase: 25.2. New Apache Phases and Corresponding Perl*Handlers

pre_connection phase: 25.2.2. Connection Phases

25.2.2.1. PerlPreConnectionHandler

prefork MPM: 24.1. What's New in Apache 2.0

preloaded modules, memory and: 10.1. Sharing Memory

preloading

modules, server startup: 10.1.3. Preloading Perl Modules at Server Startup

registry scripts, server startup: 10.1.4. Preloading Registry Scripts at Server Startup

prepare( ) statements, performance and: 20.2.6. Caching prepare( ) Statements

PREP_HTTPD configuration parameter: 3.1.1. Controlling the Build Process

presentation languages, Template Toolkit: D.4. Template Toolkit Language

print( )

debugging code: 21.5.3. Using print( ) for Debugging

Data::Dumper: 21.5.4. Using print( ) and Data::Dumper for Debugging

HTTP response headers and: 6.11. Generating Correct HTTP Headers

print( ) function: 6.4.6. print( )

performance techniques: 13.3. Buffered Printing and Better print( ) Techniques

print command: 21.5.6. Introduction to the Perl Debugger

printers, as media type: E.6. Putting Everything Together

printf( ): 6.4.7. Formats

printing

arrays: 21.5.6. Introduction to the Perl Debugger

files, perfomance tip: 13.9. Printing Unmodified Files

formatting output: 6.4.7. Formats

function call stack backtrace: 21.1.2. Curing "Internal Server Error" Problems

<html> tags: 13.3. Buffered Printing and Better print( ) Techniques

performance techniques: 13.3. Buffered Printing and Better print( ) Techniques

process_connection phase: 25.2.2. Connection Phases

25.2.2.2. PerlProcessConnectionHandler

processes

child, lifespan: 1.2.1. Forking

forking: 1.2.1. Forking

10.2.1. Forking a New Process

detaching: 10.2.3. Detaching the Forked Process

hanging

detecting: 21.7.3. Detecting Hanging Processes

diagnosing with interactive debugger: 21.7.4.3. Using the interactive debugger

diagnosing with Perl trace: 21.7.4.1. Using the Perl trace

diagnosing with system calls trace: 21.7.4.2. Using the system calls trace

OS problems: 21.7.1. Hanging Because of an Operating System Problem

reasons for: 21.7.2. When a Process Might Hang

tracking and terminating: 5.11.4. Tracking and Terminating Hanging Processes

memory consumption: 9.3. Process Memory Measurements

parent: 1.2.1. Forking

identifying: 5.3.3. Finding the Right Apache PID

PIDs

determining: 5.3. Using kill to Control Processes

identifying: 5.3.3. Finding the Right Apache PID

resource usage: 11.1. Setting the MaxClients Directive

resources, limiting number serving: 5.11.5. Limiting the Number of Processes Serving the Same Resource

size considerations: 12.2. Standalone mod_perl-Enabled Apache Server

spinning, mod_perl mailing list: 23.1.2. Spinning Processes

zombie processes: 10.2.4. Avoiding Zombie Processes

production tier (server implementation)

configuration package: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

overview: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

program flow, aborting: 6.4.2. die( )

programming languages, combining with Perl code: 13.12.3. Inline.pm

programming style: 6.1.2. The strict Pragma

(see also coding)

coding idioms: 21.5.5. The Importance of a Good, Concise Coding Style

error messages and: 21.1.2. Curing "Internal Server Error" Problems

poor practices: 1.2.2. CGI Scripts Under the Forking Model

semicolons, importance of: 21.5.1. Locating and Correcting Syntax Errors

projection media type: E.6. Putting Everything Together

protocol modules

Apache: 24.1. What's New in Apache 2.0

principles of operation: 25.2.2.2.1. Socket-based protocol module

protocols, stateless: 1.1.1. The HTTP Protocol

prototyping, modules: 3.1. Configuring the Source

proxy (mod_proxy module), overview: 12.7. Apache's mod_proxy Module

proxy server

adding in httpd accelerator mode: 12.5. Adding a Proxy Server in httpd Accelerator Mode

advantages and disadvantages: 12.5. Adding a Proxy Server in httpd Accelerator Mode

authentication: 12.11. HTTP Authentication with Two Servers and a Proxy

mod_proxy module

buffering: 12.7.3. Buffering Feature

ProxyPass directive: 12.7.1.1. ProxyPass

ProxyPassReverse directive: 12.7.1.2. ProxyPassReverse

security issues: 12.7.1.3. Security issues

virtual hosts: 12.10.1. Virtual Host Flavors

ProxyPass directive: 12.7.1.1. ProxyPass

proxypassed connection type: 12.7.2. Knowing the Proxypassed Connection Type

ProxyPassReverse directive: 12.7.1.2. ProxyPassReverse

ps command: 5.3. Using kill to Control Processes

ps(1) utility, process memory consumption monitoring: 9.3. Process Memory Measurements

pstree utility: 5.3.3. Finding the Right Apache PID

ptkdb, troubleshooting for mod_perl compatibility: 21.5.9.1. ptkdb and interactive mod_perl debugging

ptkdbrc file: 21.5.7. Interactive Perl Debugging Under mod_cgi

publishing port numbers: 4.9.1. Publishing Port Numbers Other Than 80