The workflow doesn't hang around in memory blocking a thread and using up a process while it's waiting for input.
工作流不会在内存中挂起，不会阻塞线程，也不会在等待输入时耗尽进程。
Head-of-line blocking exists in input queuing used by ATM switching element , which severely affects the throughput , and the cell lo ss is also very large.
ATM交换单元采用的输入排队由于存在队头阻塞严重影响了吞吐率，并且信元丢失率也很大。
The blocking matrix of Figure 1-14 allows the connection of a single input to any single output. Therefore, only one signal path is active at any given time.
图1 14中的块矩阵可以将单路输入连接到任意单路输出，因此在任意时间只能有一个信号路径是活动的。
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