APC is the best performing code cache in PHP5.4 and below. However, after PHP is upgraded to 5.5 and above, APC is no longer valid. Requires Zend's OpCache extension. This article will share OpCache configuration examples, hoping to be helpful to everyone.
The configuration instructions are as follows:
[opcache] zend_extension=opcache.so opcache.enable_cli=1 ;共享内存大小, 这个根据你们的需求可调 opcache.memory_consumption=256 ;interned string的内存大小, 也可调 opcache.interned_strings_buffer=8 ;最大缓存的文件数目 opcache.max_accelerated_files=4000 ;60s检查一次文件更新 opcache.revalidate_freq=60 ;打开快速关闭, 打开这个在PHP Request Shutdown的时候 会收内存的速度会提高 opcache.fast_shutdown=1 ;不保存文件/函数的注释 opcache.save_comments=0
Actual performance comparison:
The following is the data without opening opcache in the actual test:
[root@localhost ~]# ab -n 10000 -c 200 "http://112.126.69.14/main.php?a=Role&m=createRole" This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking 112.126.69.14 (be patient) Completed 1000 requests Completed 2000 requests Completed 3000 requests Completed 4000 requests Completed 5000 requests Completed 6000 requests Completed 7000 requests Completed 8000 requests Completed 9000 requests Completed 10000 requests Finished 10000 requests Server Software: openresty/1.7.2.1 Server Hostname: 112.126.69.14 Server Port: 80 Document Path: /main.php?a=Role&m=createRole Document Length: 2 bytes Concurrency Level: 200 Time taken for tests: 26.061 seconds Complete requests: 10000 Failed requests: 20 (Connect: 0, Receive: 0, Length: 20, Exceptions: 0) Write errors: 0 Non-2xx responses: 20 Total transferred: 1713580 bytes HTML transferred: 23520 bytes Requests per second: 383.72 [#/sec] (mean) Time per request: 521.216 [ms] (mean) Time per request: 2.606 [ms] (mean, across all concurrent requests) Transfer rate: 64.21 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 2 3 3.2 2 60 Processing: 17 461 905.0 219 16496 Waiting: 17 461 904.9 219 16496 Total: 21 464 905.0 222 16502 Percentage of the requests served within a certain time (ms) 50% 222 66% 271 75% 369 80% 412 90% 805 95% 1248 98% 2597 99% 3489 100% 16502 (longest request)
Data after opening:
[root@localhost ~]# ab -n 10000 -c 200 "http://112.126.69.14/main.php?a=Role&m=createRole" This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking 112.126.69.14 (be patient) Completed 1000 requests Completed 2000 requests Completed 3000 requests Completed 4000 requests Completed 5000 requests Completed 6000 requests Completed 7000 requests Completed 8000 requests Completed 9000 requests Completed 10000 requests Finished 10000 requests Server Software: openresty/1.7.2.1 Server Hostname: 112.126.69.14 Server Port: 80 Document Path: /main.php?a=Role&m=createRole Document Length: 2 bytes Concurrency Level: 200 Time taken for tests: 14.237 seconds Complete requests: 10000 Failed requests: 0 Write errors: 0 Total transferred: 1711710 bytes HTML transferred: 20020 bytes Requests per second: 702.40 [#/sec] (mean) Time per request: 284.739 [ms] (mean) Time per request: 1.424 [ms] (mean, across all concurrent requests) Transfer rate: 117.41 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 2 66 272.6 2 3005 Processing: 4 176 666.4 6 9026 Waiting: 4 163 642.8 6 9026 Total: 6 242 745.7 9 10028 Percentage of the requests served within a certain time (ms) 50% 9 66% 14 75% 99 80% 122 90% 1006 95% 1476 98% 2853 99% 3543 100% 10028 (longest request)
Related recommendations:
php apc cache and comparison with redis
PHP optimization detailed explanation_PHP tutorial
The above is the detailed content of PHP improves performance through opcache. For more information, please follow other related articles on the PHP Chinese website!

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Chinese version
Chinese version, very easy to use

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Notepad++7.3.1
Easy-to-use and free code editor