PHP cache plug-in Zend Opcache (replacing APC)

PHP cache plug-in Zend Opcache (replacing APC)

Introduction:

Zend Opcache and APC are PHP code accelerators, which cache the compilation results of PHP source code and compare the time mark when calling again. if no changes are made, cache data is used, this eliminates the overhead of re-parsing code.

APC stops at PHP 5.4, and Zend Opcache is integrated from PHP 5.5 to replace APC.

1. Install Zend Opcache

1. When compiling PHP with source code, add -- enable-opcache to enable the extension, and then configure it later.

2. manually add Zend Opcache extension.

Shell> cd/usr/local/src/php-5.6.17/ext/opcache # Go To The plug-in directory under the PHP source code directory
Shell>/usr/local/php/bin/phpize # generate configure
Shell>./configure -- with-php-config =/usr/local/php/bin/php-config
Shell> make; make install # complete installation
Installing shared extensions:/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/

2. Configure Zend Opcache

 

Shell> vim/usr/local/php. ini

[Opcache] # Find this module

Zend_extension = '/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/opcache. so' # specify the library file

Opcache. enable = 1 # enable Zend Opcache

Opcache. enable_cli = 1 # enable Opcache on the command line

Opcache. memory_consumption = 32 # shared memory size, in MB, set according to the actual situation

Opcache. interned_strings_buffer = 8

Opcache. max_accelerated_files = 4000 # the maximum number of cached files. This limit can be increased when the hit rate is low (4000 is not the whole 4000, but it will be more than this number)

Opcache. revalidate_freq = 60 # Find the file Update Interval

Opcache. save_comments = 0 # Do not save comments of files and functions, which can improve performance. However, some frameworks may have problems. We recommend that you set them after testing! (Saved as 1 by default)

Opcache. fast_shutdown = 1 # enable memory rapid recovery

Shell> service php-fpm restart # Now you can see that Zend Opcache or php-m | grep-I opcache is successfully loaded on the phpinfo interface.

 

3. Monitor and manage Zend Opcache

Two open-source projects (the second one looks better ):

1. https://github.com/PeeHaa/OpCacheGUI
2. https://github.com/amnuts/opcache-gui

# You can intuitively see the memory usage, hit rate, cached files, and other information!
# The second project is deployed in a single file, which is very convenient. However, you must set the permission for the URL.

 

Shell> unzip opcache-gui-master.zip
Shell> mkdir/data/www/opcache; cp opcache-gui-master/index. php/data/www/opcache/

Shell> vim/usr/local/nginx/conf/nginx. conf

Location ~ /Opcache/index. php {# Add the configuration to server {}. You can use. * opcache. * to replace/opcache/index. php

Access_log off;

Allow 127.0.0.1;
Allow 36.110.41.194; # Only allow access from an IP address
Deny all;

Location ~ \. Php $ {# Add resolution to PHP here, otherwise 404 permission denied will be reported
Root/data/www;
Fastcgi_pass 127.0.0.1: 9000;
# Fastcgi_pass unix:/dev/shm/php-cgi.sock; #127.0.0.1: 9000
Fastcgi_index index. php;
Fastcgi_param SCRIPT_FILENAME/data/www $ fastcgi_script_name;
Include fastcgi_params;
}
}

Shell> kill-HUP 'cat/usr/local/nginx/logs/nginx. pid'

 

# Visit http: // IP/opcache/index. php in a browser!
# This is Zend Opcache, which is convenient and practical! (The original APC is also pretty good !)

Iv. Stress Testing

 

Shell> yum-y install siege

Shell> siege-c 100-t 30 s http: // 127.0.0.1/info. php #100 concurrency, test for 30 seconds (example)

Transactions: 5624 hits # Total number of requests
Availability: 100.00% # Success Rate
Elapsed time: 29.56 secs # Total time consumed
Data transferred: 117.17 MB # total Data transmission volume
Response time: 0.01 secs # Response time
Transaction rate: 190.26 trans/sec # average number of requests completed per second
Throughput: 3.96 MB/sec # average data transfer per second
Concurrency: 2.32 # actual maximum number of concurrent connections
Successful transactions: 5624 # Number of Successful processes
Failed transactions: 0 # number of Failed processes
Longest transaction: 0.15 # maximum time of each transmission
Shortest transaction: 0.00 # minimum time for each transmission

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