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Zend Optimizer+

Zend Optimizer ist eine kostenlose Applikation, die mit Zend Guard verschlüsselte Files ausführt und die Gesamtperformance Ihrer PHP Applikation verbessert. Diese Software ist nicht in Repositories von gängigen Betriebssysteme wie CentOS und Debian Linux enthalten. Der folgende Artikel beschreibt, wie man den Zend Optimizer+ unter Debian installiert.

Herunter laden

Zuerst laden wir uns den Zend Optimizer+ heuntern und entpacken das Archiv in unserem temporären Verzeichnis ~/tmp.

root:~# cd ~/tmp/
root:~/tmp# wget https://github.com/zend-dev/ZendOptimizerPlus/archive/master.zip -O ZendOptimizerPlus-master.zip
root:~/tmp# unzip ZendOptimizerPlus-master.zip
root:~/tmp# cd ZendOptimizerPlus-master/

Kompilieren

Nun kompilieren wir den Zend Optimizer+ wie folgt.

root:~/tmp/ZendOptimizerPlus-master# export PHP_DIR=/usr
root:~/tmp/ZendOptimizerPlus-master# PHP_AUTOCONF=autoconf $PHP_DIR/bin/phpize
root:~/tmp/ZendOptimizerPlus-master# ./configure \
      --enable-optimizer-plus \
      --with-php-config=$PHP_DIR/bin/php-config && make

Installation

Das kompilierte Modul kopieren wir nun nach /usr/lib/php5/[0-9]*/.

root:~/tmp/ZendOptimizerPlus-master# cp .libs/ZendOptimizerPlus.so /usr/lib/php5/[0-9]*/
root:~/tmp/ZendOptimizerPlus-master# chmod 644 /usr/lib/php5/[0-9]*/ZendOptimizerPlus.so

Konfiguration

Nun erstellen wir uns die Konfigurationsdatei für den Zend Optimizer+. Ich habe alle möglichen Parameter und deren Beschreibung mit in dieser Datei aufgenommen. Die Einstellungen sind die default Werte, welche vom Zend Optimizer+ verwendet werden.

root:~/tmp/ZendOptimizerPlus-master# vi /etc/php5/conf.d/zend.ini

; Load the Optimizer+ extension
zend_extension=/usr/lib/php5/20090626/ZendOptimizerPlus.so

; Optimizer+ On/Off switch. When set to Off, code is not optimized.
zend_optimizerplus.enable=1

; Optimizer+ On/Off switch for php-cli. When set to Off, code is not optimized.
zend_optimizerplus.enable_cli=0

; The Optimizer+ shared memory storage size. The amount of memory for storing
; precompiled PHP code in Mbytes.
zend_optimizerplus.memory_consumption=64

; The amount of memory for interned strings in Mbytes.
zend_optimizerplus.interned_strings_buffer=4

; The maximum number of keys (scripts) in the Optimizer+ hash table.
; The number is actually the first one in the following set of prime
; numbers that is bigger than the one supplied: { 223, 463, 983, 1979, 3907,
; 7963, 16229, 32531, 65407, 130987 }. Only numbers between 200 and 100000
; are allowed.
zend_optimizerplus.max_accelerated_files=2000

; The maximum percentage of "wasted" memory until a restart is scheduled.
zend_optimizerplus.max_wasted_percentage=5

; When this directive is enabled, the Optimizer+ appends the current working
; directory to the script key, thus eliminating possible collisions between
; files with the same name (basename). Disabling the directive improves
; performance, but may break existing applications.
zend_optimizerplus.use_cwd=1

; When disabled, you must reset the Optimizer+ manually or restart the
; webserver for changes to the filesystem to take effect.
; The frequency of the check is controlled by the directive
; "zend_optimizerplus.revalidate_freq".
zend_optimizerplus.validate_timestamps=1

; How often (in seconds) to check file timestamps for changes to the shared
; memory storage allocation.
zend_optimizerplus.revalidate_freq=2

; Enables or disables file search in include_path optimization
; If the file search is disabled and a cached file is found that uses
; the same include_path, the file is not searched again. Thus, if a file
; with the same name appears somewhere else in include_path, it
; won't be found. Enable this directive if this optimization has an effect on
; your applications. The default for this directive is disabled, which means
; that optimization is active.
zend_optimizerplus.revalidate_path=0

; If disabled, all PHPDoc comments are dropped from the code to reduce the
; size of the optimized code. Disabling "Doc Comments" may break some
; existing applications and frameworks (e.g. Doctrine, ZF2, PHPUnit)
zend_optimizerplus.save_comments=1

; If disabled, PHPDoc comments are not loaded from SHM, so "Doc Comments"
; may be always stored (save_comments=1), but not loaded by applications
; that don't need them anyway.
zend_optimizerplus.load_comments=1

; If enabled, a fast shutdown sequence is used for the accelerated code
; The fast shutdown sequence doesn't free each allocated block, but lets
; the Zend Engine Memory Manager do the work.
zend_optimizerplus.fast_shutdown=0

; Allow file existence override (file_exists, etc.) performance feature.
zend_optimizerplus.enable_file_override=0

; A bitmask, where each bit enables or disables the appropriate Optimizer+
; passes
zend_optimizerplus.optimization_level="0xffffffff"

; Enable this hack as a workaround for "can't redeclare class" errors.
; The Optimizer+ stores the places where DECLARE_CLASS opcodes use
; inheritance (These are the only opcodes that can be executed by PHP,
; but which may not be executed because the parent class is missing due to
; optimization). When the file is loaded, Optimizer+ tries to bind the
; inherited classes by using the current environment. The problem with this
; scenario is that, while the DECLARE_CLASS opcode may not be needed for the
; current script, if the script requires that the opcode at least be defined,
; it may not run. The default for this directive is disabled, which means
; that optimization is active. In php-5.3 and above this hack is not needed
; anymore and this setting has no effect.
zend_optimizerplus.inherited_hack=1

; Enable this hack as a workaround for "duplicate definition" errors.
zend_optimizerplus.dups_fix=0

; The location of the Optimizer+ blacklist file.
; The Optimizer+ blacklist file is a text file that holds the names of files
; that should not be accelerated. The file format is to add each filename
; to a new line. The filename may be a full path or just a file prefix
; (i.e., /var/www/x blacklists all the files and directories in /var/www
; that start with 'x'). Files are usually triggered by one of the following
; three reasons:
;    1) Directories that contain auto generated code, like Smarty or ZFW cache.
;    2) Code that does not work well when accelerated, due to some delayed
;       compile time evaluation.
;    3) Code that triggers an Optimizer+ bug.
zend_optimizerplus.blacklist_filename=""

; Check the cache checksum each N requests.
; The default value of "0" means that the checks are disabled.
; Because calculating the checksum impairs performance, this directive should
; be enabled only as part of a debugging process.
zend_optimizerplus.consistency_checks=0

; How long to wait (in seconds) for a scheduled restart to begin if the cache
; is not being accessed.
; The Optimizer+ uses this directive to identify a situation where there may
; be a problem with a process. After this time period has passed, the
; Optimizer+ assumes that something has happened and starts killing the
; processes that still hold the locks that are preventing a restart.
; If the log level is 3 or above, a "killed locker" error is recorded
; in the Apache logs when this happens.
zend_optimizerplus.force_restart_timeout=180

; Optimizer+ error_log file name. Empty string assumes "stderr".
zend_optimizerplus.error_log=""

; All Optimizer+ errors go to the Web server log.
; By default, only fatal errors (level 0) or errors (level 1) are logged.
; You can also enable warnings (level 2), info messages (level 3) or
; debug messages (level 4).
zend_optimizerplus.log_verbosity_level=1

; Preffered Shared Memory back-end. Leave empty and let the system decide.
zend_optimizerplus.preferred_memory_model=""

; Protect the shared memory from unexpected writing during script execution.
; Useful for internal debugging only.
zend_optimizerplus.protect_memory=0

; EOF

Test

Damit die Änderungen aktiv werden, müssen wir den Apache Webserver neu starten.

root:~/tmp/ZendOptimizerPlus-master# /etc/init.d/apache2 restart

Nun prüfen wir mit folgenden Befehl ob das Zend Optimizer+ Modul erfolgreich geladen wurde.

root:~/tmp/ZendOptimizerPlus-master# php -m | grep Zend
Zend Optimizer+
[Zend Modules]
Zend Optimizer+

Weitere Informationen zum Zend Optimizer+ Modul anzeigen.

root:~/tmp/ZendOptimizerPlus-master# php -i | grep Zend
Zend Extension => 220090626
Zend Extension Build => API220090626,NTS
Zend Memory Manager => enabled
Zend Multibyte Support => disabled
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
    with Zend Optimizer+ v7.0.0-dev, Copyright (c) 1999-2013, by Zend Technologies
Zend Optimizer+

Dokumentation