认识PHP7.2、PHP7.1 性能对比

推荐：PHP7教程

服务器配置

2核 Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
内存 4G
系统 Centos 6.2
gcc 4.4.7

安装

# http://hk1.php.net/get/php-7.1.10.tar.gz/from/this/mirror
$ ./configure --prefix=/data/local/php71 --with-config-file-path=/data/local/php71/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir=/usr/local/freetype --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-intl --enable-pcntl --with-mcrypt --enable-ftp --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --disable-fileinfo --enable-opcache --with-xsl

# https://downloads.php.net/~remi/php-7.2.0RC3.tar.gz
$ ./configure --prefix=/data/local/php72 --with-config-file-path=/data/local/php72/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir=/usr/local/freetype --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-intl --enable-pcntl --enable-ftp --with-gd --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --disable-fileinfo --enable-opcache --with-xsl

$ /data/local/php71/bin/php -v
PHP 7.1.10 (cli) (built: Oct  8 2017 16:08:01) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

$ /data/local/php72/bin/php -v
PHP 7.2.0RC3 (cli) (built: Oct  8 2017 18:11:35) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.2.0-dev, Copyright (c) 1998-2017 Zend Technologies

php.ini 配置

仅供测试，非生产环境使用，摘录自 www.laruence.com/2016/12/18/…

engine = On
short_open_tag = Off
realpath_cache_size = 2M
max_execution_time = 86400
memory_limit = 1024M
error_reporting = 0
display_errors = 0
display_startup_errors = 0
log_errors = 0
default_charset = "UTF-8"
 
[opcache]
zend_extension=opcache.so
opcache.enable=1
opcache.enable_cli=1
opcache.optimization_level=-1
opcache.fast_shutdown=1
opcache.validate_timestamps=1
opcache.revalidate_freq=60
opcache.use_cwd=1
opcache.max_accelerated_files=100000
opcache.max_wasted_percentage=5
opcache.memory_consumption=128
opcache.consistency_checks=0
opcache.huge_code_pages=1

纯 CPU 基准测试

基于Zend/bench.php的脚本测试

未开启 opcache

$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done 
Total              1.381
Total              1.416
Total              1.374
Total              1.366
Total              1.430
Total              1.394
Total              1.394
Total              1.369
Total              1.377
Total              1.358
# 取平均值  1.3859
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done                 
Total              1.448
Total              1.444
Total              1.445
Total              1.458
Total              1.440
Total              1.447
Total              1.486
Total              1.433
Total              1.449
Total              1.464
# 取平均值  1.4514

开启 opcache 之后

$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total              0.794
Total              0.797
Total              0.798
Total              0.806
Total              0.808
Total              0.793
Total              0.814
Total              0.846
Total              0.859
Total              0.818
# 取平均值 0.8133
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/bench.php|grep 'Total'|awk '{print $0}' ;done
Total              0.779
Total              0.774
Total              0.765
Total              0.772
Total              0.764
Total              0.769
Total              0.779
Total              0.839
Total              0.784
Total              0.842
# 取平均值 0.7867

在本次测试中，未开启opcache的情况下，php7.2 性能反而有些下降，开启opcache之后，性能追赶上来，比php7.1略有提升。所以更应该开启opcache了。

基于Zend/micro_bench.php的脚本测试

未开启 opcache

$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total              5.588
Total              5.689
Total              5.652
Total              5.702
Total              5.668
Total              5.641
Total              5.622
Total              5.580
Total              5.635
Total              5.588
# 取平均值 5.6365
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total              5.924
Total              5.597
Total              5.553
Total              5.579
Total              5.591
Total              5.523
Total              5.518
Total              5.503
Total              5.494
Total              5.558
# 取平均值 5.584

开启 opcache

$ for i in `seq 1 10`;do /data/local/php71/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total              4.369
Total              4.379
Total              4.352
Total              4.370
Total              4.375
Total              4.397
Total              4.311
Total              4.361
Total              4.313
Total              4.373
# 取平均值 4.36
$ for i in `seq 1 10`;do /data/local/php72/bin/php /data/soft/php-7.2.0RC3/Zend/micro_bench.php|grep 'Total'|awk '{print $0}' ;done
Total              3.711
Total              3.711
Total              3.712
Total              3.734
Total              3.700
Total              3.712
Total              3.705
Total              3.769
Total              3.785
Total              3.695
# 取平均值 3.7234

在本次测试中，未开启opcache的情况下，php7.2 性能比php7.1 略有提升，开启opcache之后，php7.2比php7.1有很大的提升。

图表呈现

汇总
bench.php
bench.php + opcache
micro_bench.php
micro_bench.php + opcache
PHP7.1    1.3859    0.8133    5.6365    4.3600    
PHP7.2    1.4514    0.7867    5.5840    3.7234

软件应用测试

配置说明

2核 Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
内存 4G
系统 Centos 6.2
nginx 1.10.1
mysql 5.5.28
wordpress 4.8.1

考虑到该服务器上已经在运行我的博客等其他服务，所以php-fpm子进程数只配置了15个，在相同配置文件的条件下对比。

# php-fpm 简单配置，仅供测试
[global]
pid = /data/local/php7{x}/var/run/php-fpm.pid
error_log = /data/log/php7{x}-fpm.log
log_level = notice
[www]
listen = /tmp/php7{x}-cgi.sock
listen.backlog = -1
listen.allowed_clients = 127.0.0.1
listen.owner = www
listen.group = www
listen.mode = 0666
user = www
group = www
pm = static
pm.max_children = 15

wordpress 压测

未开启 opcache

# php7.1
Concurrency Level:      10
Time taken for tests:   8.696 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      5215300 bytes
HTML transferred:       5189300 bytes
Requests per second:    11.50 [#/sec] (mean)
Time per request:       869.637 [ms] (mean)
Time per request:       86.964 [ms] (mean, across all concurrent requests)
Transfer rate:          585.65 [Kbytes/sec] received
# php7.2
Concurrency Level:      10
Time taken for tests:   8.528 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      5215500 bytes
HTML transferred:       5189300 bytes
Requests per second:    11.73 [#/sec] (mean)
Time per request:       852.793 [ms] (mean)
Time per request:       85.279 [ms] (mean, across all concurrent requests)
Transfer rate:          597.24 [Kbytes/sec] received

可以看到在未开启opcache的情况下，性能非常糟糕，10个并发的情况下，每个请求的响应时间已经非常长了，没有必要继续增加并发数了。

开启 opcache 之后

汇总
7.1 Requests per second (每秒)
7.1 Time per request (ms)
7.2 Requests per second (每秒)
7.2 Time per request (ms)
c10 n100    60.63    164.939    70.05    142.762    
c20 n200    66.27    301.803    70.74    282.719    
c30 n300    66.50    451.121    70.89    423.2    
c40 n400    67.95    588.683    70.6    566.608

在开启opcache 之后，相对之前未开启的情况性能简直天壤之别。相比之下php7.2在wordpress压测上，QPS 稳定在70+ 相对php7.1 增加不少。

测试结果和配置参数以及服务器配置有关，仅供对比php7.1与7.2的性能。