如果资源已经存在，则CreateFileMapping重新初始化共享资源对于进程的约定。

The CreateFileMapping reinitializes the commitment of the Shared resource to the process if the resource already exists.

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作为共享内存分区重新启动lpar之后，我使用lparstat和vmstat查看lpar的共享内存设置。

After restarting the lpar as a Shared memory partition, I used lparstat and vmstat to view the lpars' Shared memory Settings.

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PHP的二进制代码（操作码）缓存用来存储在共享内存中的字节码编译的脚本，以便它可以重新通过PHP引擎，用于后续执行相同的脚本。

The PHP bytecode (opcode) cache is used to store the compiled script bytecode in shared memory so that it can be re-used by PHP engine for subsequent executions of the same script.

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