局部系统队列区LS QA ？
因为系统缺乏足够缓冲区空间或者因为队列已满无法执行套接字上操作。
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
由于系统缓冲区空间不足或队列已满，不能执行套接字上的操作。
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
由于系统缓冲区空间不足或队列已满，不能执行套接字上的操作。
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
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