Centos下迴圈測試php對Redis和共用記憶體(shm)讀寫的效率

這篇文章主要介紹了關於Centos下迴圈測試php對Redis和共用記憶體(shm)讀寫的效率，有著一定的參考價值，現在分享給大家，有需要的朋友可以參考一下

redis和memcache還有共用記憶體都是讀取記憶體的資料，為了測試一下到底效率誰更勝一籌，我在我的Centos虛擬機器下做了一次公平的測試。

測試參數

環境：Centos （配置忽略）、語言：PHP、WebServer：Nginx、測試次數：10000、字元類型及長度：字串（1024）

準備測試

<?php//測試資料$arr = array( 1 =>   array ('id' => '4146','attacksdfdsfdsddddddddddd' => '5.45','atk_class' => '神聖級','wufang' => '4.9','def_class' => '超神級','cefang' => '4.9','mdf_class' => '超神級','hp' => '6.43','hp_class' => '神王級','dodge' => '55','dodge_class' => 'SSSS','crit' => '50','crit_class' => 'SSS','penetrate' => '55','penetrate_class' => 'SSSS','mingzhong' => '51','hit_class' => 'SSSS','anti_dizziness' => '0','anti_dizzinesssdfdsfdsfdsfdsfds_class' => 'F','anti_critical' => '20','anti_critical_class' => 'F','tenacity' => '0','tenacity_class' => 'F',  ),  2 =>   array ('id' => '414ddffff7','attack' => '5.45','atk_class' => '神聖級','wufang' => '4.95','def_class' => '超神級','cefang' => '4.95','mdf_class' => '超神級','hp' => '6.43','hp_class' => '神王級','dodge' => '55','dodge_class' => 'SSSS','crit' => '50','crit_class' => 'SSS','penetrate' => '55','penetrate_class' => 'SSSS','mingzhong' => '51','hit_class' => 'SSSS','anti_dizziness' => '0','anti_dizziness_clsdfdsfdsfdsfdsfdsass' => 'F','anti_critical' => '20','anti_critical_class' => 'F','tenacity' => '0','tenacity_class' => 'F',  ));$str = json_encode($arr);echo strlen($str);          //輸出1024

對redis進行10000次寫入測試

<?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;    //執行5次，大概平均結果為  1.7016470432281 秒

對共用記憶體(shm)進行10000次寫入測試

<?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;  //執行5次，大概平均結果為 0.0025370121002197 秒

對redis進行10000次讀測試

<?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;     //執行5次，大概平均結果為 2.1236310005188 秒

對共用記憶體(shm)進行10000次讀測試

<?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;     //執行5次，大概平均結果為 0.0021078586578369 秒

結果清單

Redis 讀：2.1秒 寫：1.7秒

Shm 讀：0.0021秒 寫：0.0025 秒

可見，效果差別懸殊。

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