最近使用mongo插入数据接近5亿时出现了 TCP Zero Window Probes，不晓得是服务器那边的问题还是现实就是如此，很难得遇到这个问题，故在此记录下相关资料。
TCP Zero Window Probes If the remote host advertises a zero window size for its input window and the local host has data in its output window, a window probe is sent at intervals limited by CFG_WIN_PROBE_MIN and CFG_WIN_PROBE_MAX. The window probes are sent until space opens up in the remote hosts input window. A window probe consists of the one data byte past the end of the window. Since a host is required to respond to data sent outside of its window, a window probe forces the remote host to send back a packet with its updated input window size.
http://www.on-time.com/rtos-32-docs/rtip-32/programming-manual/tcp-ip-networking/tcp/zero-window-probes.htm
TCP Window Management Issues
http://www.tcpipguide.com/free/t_TCPWindowManagementIssues.htm
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