PHP Opcode缓存加速组件 APC详解说明
发布时间：2022-02-24 09:13:40 所属栏目：PHP教程 来源：互联网
导读：PHP在性能上相对于其他编译型语言来说算不上突出，但是使用了Opcode缓存后性能提升还是很明显的。常见的缓存加速组件主要有 eAccelerator,XCache,APC本文主要介绍APC的安装使用。 APC，全称是Alternative PHP Cache，官方翻译叫可选PHP缓存。它为我们提供了
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PHP在性能上相对于其他编译型语言来说算不上突出，但是使用了Opcode缓存后性能提升还是很明显的。常见的缓存加速组件主要有 eAccelerator,XCache,APC本文主要介绍APC的安装使用。 APC，全称是Alternative PHP Cache，官方翻译叫"可选PHP缓存"。它为我们提供了缓存和优化PHP的中间代码的框架。 APC的缓存分两部分:系统缓存和用户数据缓存。 系统缓存 它是指APC把PHP文件源码的编译结果缓存起来，然后在每次调用时先对比时间标记。如果未过期，则使用缓存的中间代码运行。默认缓存3600s(一小时)。但是这样仍会浪费大量CPU时间。因此可以在php.ini中设置system缓存为永不过期(apc.ttl=0)。不过如果这样设置，改运php代码后需要重启WEB服务器。目前使用较多的是指此类缓存。 用户数据缓存 缓存由用户在编写PHP代码时用apc_store和apc_fetch函数操作读取、写入的。如果数据量不大的话，可以一试。如果数据量大，使用类似memcache此类的更加专著的内存缓存方案会更好。 APC模块的安装 最简单的方法是直接使用pecl，在命令行下输入：/usr/local/php/bin/pecl install apc 然后按照提示一步步完成即可，示例如下： [root@iZ23bm1tc0pZ ~]# /usr/local/php/bin/pecl install apc downloading APC-3.1.13.tgz ... Starting to download APC-3.1.13.tgz (171,591 bytes) .....................................done: 171,591 bytes 55 source files, building running: phpize Configuring for: PHP Api Version: 20100412 Zend Module Api No: 20100525 Zend Extension Api No: 220100525 Enable internal debugging in APC [no] : no Enable per request file info about files used from the APC cache [no] : no Enable spin locks (EXPERIMENTAL) [no] : no Enable memory protection (EXPERIMENTAL) [no] : no Enable pthread mutexes (default) [no] : no Enable pthread read/write locks (EXPERIMENTAL) [yes] : yes 然后重启服务器即可： lnmp nginx restart 先看一下没有使用apc情况下的压测结果： [root@iZ23bm1tc0pZ ~]# ab -n1000 -c100 http://zfsphp.cn/index.php This is ApacheBench, Version 2.3 <$Revision: 1706008 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking zfsphp.cn (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Completed 600 requests Completed 700 requests Completed 800 requests Completed 900 requests Completed 1000 requests Finished 1000 requests Server Software: nginx Server Hostname: zfsphp.cn Server Port: 80 Document Path: /index.php Document Length: 14341 bytes Concurrency Level: 100 Time taken for tests: 15.517 seconds Complete requests: 1000 Failed requests: 0 Total transferred: 14544000 bytes HTML transferred: 14341000 bytes Requests per second: 64.45 [#/sec] (mean) Time per request: 1551.671 [ms] (mean) Time per request: 15.517 [ms] (mean, across all concurrent requests) Transfer rate: 915.34 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 2 4.8 0 17 Processing: 46 1481 277.0 1560 1638 Waiting: 42 1481 277.1 1560 1638 Total: 58 1482 272.8 1560 1638 Percentage of the requests served within a certain time (ms) 50% 1560 66% 1576 75% 1582 80% 1587 90% 1602 95% 1612 98% 1622 99% 1629 100% 1638 (longest request) 可见最大吞吐率只有64.45reqs/s 然后我们开启apc，测试结果如下： [root@iZ23bm1tc0pZ ~]# ab -n1000 -c100 http://Cuoxin.com/index.php This is ApacheBench, Version 2.3 <$Revision: 1706008 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.Cuoxin.com/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking Cuoxin.com (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Completed 600 requests Completed 700 requests Completed 800 requests Completed 900 requests Completed 1000 requests Finished 1000 requests Server Software: nginx Server Hostname: zfsphp.cn Server Port: 80 Document Path: /index.php Document Length: 14341 bytes Concurrency Level: 100 Time taken for tests: 7.122 seconds Complete requests: 1000 Failed requests: 0 Total transferred: 14544000 bytes HTML transferred: 14341000 bytes Requests per second: 140.41 [#/sec] (mean) Time per request: 712.189 [ms] (mean) Time per request: 7.122 [ms] (mean, across all concurrent requests) Transfer rate: 1994.29 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 1 2.4 0 10 Processing: 23 677 125.3 705 775 Waiting: 22 677 125.4 705 775 Total: 30 678 123.1 705 775 Percentage of the requests served within a certain time (ms) 50% 705 66% 719 75% 726 80% 730 90% 742 95% 750 98% 760 99% 765 100% 775 (longest request) 可见吞吐率提高了一倍多，达到140.41reqs/s，然后，我们在开启动态内容缓存(楼主的博客用的是Smarty缓存)，测试结果如下： [root@iZ23bm1tc0pZ ~]# ab -n1000 -c100 http://Cuoxin.com/index.php This is ApacheBench, Version 2.3 <$Revision: 1706008 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.Cuoxin.com/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking zfsphp.cn (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Completed 600 requests Completed 700 requests Completed 800 requests Completed 900 requests Completed 1000 requests Finished 1000 requests Server Software: nginx Server Hostname: zfsphp.cn Server Port: 80 Document Path: /index.php Document Length: 14341 bytes Concurrency Level: 100 Time taken for tests: 2.263 seconds Complete requests: 1000 Failed requests: 0 Total transferred: 14544000 bytes HTML transferred: 14341000 bytes Requests per second: 441.98 [#/sec] (mean) Time per request: 226.255 [ms] (mean) Time per request: 2.263 [ms] (mean, across all concurrent requests) Transfer rate: 6277.49 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 1 3.1 0 12 Processing: 18 215 38.1 222 255 Waiting: 18 215 38.3 222 255 Total: 26 216 35.6 223 255 Percentage of the requests served within a certain time (ms) 50% 223 66% 230 75% 232 80% 234 90% 237 95% 239 98% 240 99% 243 100% 255 (longest request) 这一次吞吐率居然达到441.98reqs/s，提高了三倍多，相比最初的64.45reqs/s提高了近7倍，可见使用apc的opcode缓存配合Smarty缓存，对网站性能的优化效果还是相当明显的。 （编辑：威海站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
