通过设置合理的进行守候的重叠调用的数量，防止出现未分页内存池被耗尽，这才是最主要的挑战。
The main challenge lies in managing resources by placing limits on the number of outstanding overlapped calls so that the non-paged pool is not exhausted.
它创建的分页设备的大小等于共享内存池的最大内存值。
It creates a paging device of equal size to that of the maximum memory value of the Shared memory pool.
因为并发连接数量越多，所消耗的未分页内存池也越多；等候处理的发送调用越多，被锁定的内存页面也越多(小心别超过了极限)。
More established connections mean more non-paged pool usage. The number of concurrent send calls should be limited to prevent reaching the locked pages limit.
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