COMNET III

Chapter 8. Session Sources
8.7 Window Stats Report
SESSION SOURCES: WINDOW STATS
REPLICATION 1 FROM 0.0 TO 300.0 SECONDS
ORIGIN / SESSION SRC: WINDOW NO. OF CONG PKT CREATION INTERVAL (MS)
DESTINATION LIST AVG MAX RESETS AVOID AVG MAX STD DEV
______________________ ______ ___ ______ ______ _______ _______ _______
Session Server / src Session Source:
Session Workstation 2.00 2 0 0 1 3 0
The Window Stats Report presents the statistics for session sources on the TCP/IP congestion
window that varies as the connection starts up and when congestion is detected. It also
presents the statistics for the interval between packets being created.
Window Size—Average, Maximum
The average and maximum size, in packets, of the TCP/IP congestion
window.
Number Of Congestion Resets
The number of times that the TCP/IP "congestion" window (dynamic
window size) is reset to 1 packet. Thus, congestion window size is reset.
Number Of Congestion Avoidances
After a reset, the window size starts to grow more slowly (linearly) than
the initial "slow start" window growth. This algorithm switch is counted
as "Congestion Avoidance" and gives a measure of how often the network
is recovering from congestion. If Congestion Avoidance is nearly the
same as the Number of Congestion Resets, then congestion may be
spurious or short-lived. If there are lots of Congestion Resets and few
Congestion Avoidances, then either the network is very congested or the
message sizes are not very large.
Packet Creation Interval (MS)—Average, Maximum, Standard Deviation
The average, maximum, and standard deviation of the time interval
between the creation of packets.
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