Drupal PHP性能优化实战
Executed 82 queries in 310.18 milliseconds. Queries taking longer than 5 ms and queries executed more than once, are highlighted. Page execution time was 1557.2 ms.
Executed 50 queries in 49.63 milliseconds. Queries taking longer than 5 ms and queries executed more than once, are highlighted. Page execution time was 741.25 ms.
Executed 91 queries in 213.35 milliseconds. Queries taking longer than 5 ms and queries executed more than once, are highlighted. Page execution time was 1218.71 ms.
Executed 81 queries in 196.3 milliseconds. Queries taking longer than 5 ms and queries executed more than once, are highlighted. Page execution time was 1053.41 ms.
打开devel模块查看运行时间，发现大部分时间不是在query上面而是在PHP运行时间。
于是在关于优化的会议中提出这个方案，因为eAccelerator已经很久没更新了，所以不考虑测试安装。
1台LAMP环境的虚拟机导出两台，分别安装APC环境，Xcache环境。
以下测试结果。
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without APC & Xcache
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with APC
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with Xcache
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Login Page
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1.261 (s)
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0.293 (s)
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0.288 (s)
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Home Page
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14.58 (s)
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4.388 (s)
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4.573 (s)
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Device Page
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15.444 (s)
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5.172 (s)
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5.383 (s)
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Add Hardware
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30.419 (s)
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8.654 (s)
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8.996 (s)
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Logout
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7.061 (s)
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1.42 (s)
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1.74 (s)
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从结果上看已经达到了3倍以上的速度，比我预期的3倍效果更好。
Drupal的PHP是很复杂并且冗余的，在Drupal上面使用OPCODE Cache是再好不过的。
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