這個MySQL伺服器壓測的需求是 ：

環境: Linux RHEL 5U4 X86-64, 24G記憶體， 16核.
MySQL伺服器在xx.232.36.1上。

壓力由最多32個客戶端發起，每個客戶端分別做update， insert, delete操作，概率分別是50%, 30%, 20%, 每種操作迴圈999999 × 100次，每100次操作後休息1-3秒。
這樣的壓力最多持續2個小時。

我們用的是著名的tsung壓力測試工具， 之前我有篇blog介紹過， 見這裡。

以下是用到的指令碼， 用到了比較先進的隨機動態引數替換等技術，對於編寫此類指令碼有很大的借鑑意義。

<!DOCTYPE tsung SYSTEM "/usr/local/share/tsung/tsung-1.0.dtd">
<tsung loglevel="warning" dumptraffic="false">

  <clients>
    <client host="localhost" use_controller_vm="true"/>
  </clients>

 <servers>
  <server host="xx.232.36.1" port="3306" type="tcp"/>
 </servers>

 <load>
  <arrivalphase phase="1" duration="2" unit="hour">
    <users interarrival="0.1" unit="second" maxnumber="32"></users>
  </arrivalphase>
 </load>

 <sessions>
  <session probability="50" name="st-replace" type="ts_mysql">

      <request>
        <mysql type="connect" />
      </request>  
      <request>
        <mysql type="authenticate" database="test" username="test" password="mysqltest" />
      </request>  

      <for from="1" to="999999" var="counter">
        <for from="1" to="100" var="counter">
          <setdynvars sourcetype="random_number" start="1" end="999999999">
            <var name="rnd_uid" />
          </setdynvars>
          <setdynvars sourcetype="random_string" length="13">
            <var name="rnd_uname" />
          </setdynvars>
          <setdynvars sourcetype="random_number" start="0" end="1">
            <var name="rnd_male" />
          </setdynvars>
          <setdynvars sourcetype="random_number" start="1" end="120">
           <var name="rnd_age" />
         </setdynvars>
         <setdynvars sourcetype="random_string" length="10">
           <var name="rnd_city" />
         </setdynvars>
         <setdynvars sourcetype="random_string" length="52">
           <var name="rnd_profile" />
         </setdynvars>
         <request subst="true">        
           <mysql type="sql">replace into user(tid, uname, male, age, city, profile) values(%%_rnd_uid%%, "%%_rnd_uname%%", %%_rnd_male%%, %%_rnd_age%%, "%%_rnd_city%%", "%%_rnd_profile%%") </mysql>
         </request>  
        </for>
        <thinktime min="2" max="5" random="true" />
      </for>

      <request>        
        <mysql type="close"></mysql>
      </request>
  </session>

  <session probability="20" name="st-delete" type="ts_mysql">

      <request>
        <mysql type="connect" />
      </request>  
      <request>
        <mysql type="authenticate" database="test" username="test" password="mysqltest" />
      </request>  

      <for from="1" to="999999" var="counter">
        <for from="1" to="100" var="counter">
          <setdynvars sourcetype="random_number" start="1" end="999999999">
            <var name="rnd_uid" />
          </setdynvars>
          <request subst="true">        
            <mysql type="sql">delete from user where tid = %%_rnd_uid%% </mysql>
          </request>  
        </for>
        <thinktime min="2" max="5" random="true" />
      </for>

      <request>        
        <mysql type="close"></mysql>
      </request>
  </session>

  <session probability="30" name="st-update" type="ts_mysql">

      <request>
        <mysql type="connect" />
      </request>  
      <request>
        <mysql type="authenticate" database="test" username="test" password="mysqltest" />
      </request>  

      <for from="1" to="999999" var="counter">
        <for from="1" to="100" var="counter">
          <setdynvars sourcetype="random_number" start="1" end="999999999">
            <var name="rnd_uid" />
          </setdynvars>
         <setdynvars sourcetype="random_string" length="52">
           <var name="rnd_profile" />
         </setdynvars>

         <request subst="true">        
           <mysql type="sql">update  user set profile = "%%_rnd_profile%%" where tid = %%_rnd_uid%% </mysql>
         </request> 
        </for> 
        <thinktime min="2" max="5" random="true" />
      </for>

      <request>        
        <mysql type="close"></mysql>
      </request>
  </session>


 </sessions>
</tsung>

祝壓測開心！

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