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Chapter 9
Monitoring Traffic
The Graphs button
Click the Graphs button to view the same statistics displayed on the Node page (cache performance, current
connections and transfers, network, and name resolution) in graphical format. You can display multiple
statistics in one graph.
To display a single graph, click the graph’s name in the list. Each graph’s name appears as a link (The graphs
that display are the same graphs that display when you click a link for a statistic on the Node page).
To display multiple statistics in one graph, click the box next to the name of each graph you want to display,
then click the Graph Selected button.
The Protocols button
Click the Protocols button to see the following information about a Traffic Server node:
•
HTTP statistics that show information about HTTP transactions and speeds (such as, cache misses, cache
hits, connection errors, aborted transactions), and client and server connection information
•
FTP statistics that include the number of open connections, successful PASV and PORT connections, and
unsuccessful PASV and PORT connections
•
NNTP statistics that include the number of client and server connections, the number of article and group
hits and misses, and information about posts, pulls, and feeds
•
ICP statistics that include information about queries originating from the Traffic Server node and from ICP
peers (parents and siblings)
•
WCCP version 1.0 or 2.0 statistics that include information about the routers being used, the number of
active nodes, the leader’s IP address, and whether WCCP is currently enabled on the Traffic Server node
The Cache button
Click the Cache button to view the following statistics about the Traffic Server’s cache:
•
The amount of space in the cache currently being used and the maximum cache size in GB
•
The total size of the RAM cache in bytes, and the number of RAM cache hits and misses
•
The number of cache lookups, object reads, writes, updates, and removes
The Other button
Click the Other button to view the following statistics about a Traffic Server node:
•
The total number of lookups and hits in the host database, and the average lookup time
•
The total number of lookups in the Domain Name Server (DNS), the number of successful lookups, and
the average lookup time
•
The number of nodes in the cluster, the total number of cluster operations, the number of bytes read and
written to all the nodes in the cluster, and the current number of open connections in the cluster
•
The number of successful and unsuccessful connections to the SOCKS server, and the number of
connections currently in progress
•
The number of log files currently open, the amount of space currently being used for log files, the number
of access events and error events logged, and the number of access events skipped
NOTE
If you have installed a plug-in with Traffic Server, the Protocols button displays
information about additional protocols. Refer to the documentation that comes with the
plug-in you are using for more information.
