Flow Control is the sum of input window probes, input window updates,
output window probes, and output window updates since TCP/IP
initialization.
This situation occurs when the reading application is having trouble
keeping up with the sending application. In most cases this is not
a problem, but is instead normal behavior. TCP has built-in
self-correcting logic to address this type of situation. When
the receiving application cannot keep up, TCP on the receiving side
alerts TCP on the sending side to slow down the amount of data being sent.
However, if a flow control issue is instead a side effect of an
application problem such as the application being hung, look
for additional alerts that might have been triggered, indicating an
application issue.
This is an informational situation.
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