这篇文章主要介绍了关于Centos下循环测试php对Redis和共享内存(shm)读写的效率,有着一定的参考价值,现在分享给大家,有需要的朋友可以参考一下
redis和memcache还有共享内存都是读取内存的数据,为了测试一下到底效率谁更胜一筹,我在我的Centos虚拟机下做了一次公平的测试。
测试参数
环境:Centos (配置忽略)、语言:PHP、WebServer:Nginx、测试次数:10000、字符类型及长度:字符串(1024)
准备测试
<?php //测试数据 $arr = array( 1 => array ('id' => '4146','attacksdfdsfdsddddddddddd' => '5.45','atk_class' => '神圣级','wufang' => '4.9','def_class' => '超神级','cefang' => '4.9','mdf_class' => '超神级','hp' => '6.43','hp_class' => '神王级','dodge' => '55','dodge_class' => 'SSSS','crit' => '50','crit_class' => 'SSS','penetrate' => '55','penetrate_class' => 'SSSS','mingzhong' => '51','hit_class' => 'SSSS','anti_dizziness' => '0','anti_dizzinesssdfdsfdsfdsfdsfds_class' => 'F','anti_critical' => '20','anti_critical_class' => 'F','tenacity' => '0','tenacity_class' => 'F', ), 2 => array ('id' => '414ddffff7','attack' => '5.45','atk_class' => '神圣级','wufang' => '4.95','def_class' => '超神级','cefang' => '4.95','mdf_class' => '超神级','hp' => '6.43','hp_class' => '神王级','dodge' => '55','dodge_class' => 'SSSS','crit' => '50','crit_class' => 'SSS','penetrate' => '55','penetrate_class' => 'SSSS','mingzhong' => '51','hit_class' => 'SSSS','anti_dizziness' => '0','anti_dizziness_clsdfdsfdsfdsfdsfdsass' => 'F','anti_critical' => '20','anti_critical_class' => 'F','tenacity' => '0','tenacity_class' => 'F', )); $str = json_encode($arr); echo strlen($str); //输出1024
对redis进行10000次写入测试
<?php $redis = new Redis(); $redis->connect('127.0.0.1',6379); $redis->auth('310c8cabcdefghf2d8abcdefd44496ac80'); $start = microtime(true) ; for($i = 0; $i<10000; $i++) { $redis->set('key', $str); } echo microtime(true) - $start; //执行5次,大概平均结果为 1.7016470432281 秒
对共享内存(shm)进行10000次写入测试
<?php $key = 0x4337b123; $size = 1024; $shmid = @shmop_open($key, 'c', 0644, $size); $start = microtime(true); for($i = 0; $i<10000; $i++) { shmop_write($shmid, $str, 0); } @shmop_close($shmid); echo microtime(true) - $start; //执行5次,大概平均结果为 0.0025370121002197 秒
对redis进行10000次读测试
<?php $redis = new Redis(); $redis->connect('127.0.0.1',6379); $redis->auth('310c8cabcdefghf2d8abcdefd44496ac80'); $start = microtime(true) ; for($i = 0; $i<10000; $i++) { $redis->get('key'); } echo microtime(true) - $start; //执行5次,大概平均结果为 2.1236310005188 秒
对共享内存(shm)进行10000次读测试
<?php $key = 0x4337b123; $size = 1024; $shmid = @shmop_open($key, 'c', 0644, $size); $start = microtime(true); for($i = 0; $i<10000; $i++) { shmop_read($shmid, 0,1024); } @shmop_close($shmid); echo microtime(true) - $start; //执行5次,大概平均结果为 0.0021078586578369 秒
结果清单
Redis 读:2.1秒 写:1.7秒
Shm 读:0.0021秒 写:0.0025 秒
可见,效果差别悬殊。
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