Recent Channel Performance Workspace
Use the Recent Channel Performance workspace to view performance information related to the monitored channels in the IBM® MQ (WebSphere® MQ) environment. It provides statistics collected over several sampling intervals, which you can use to view trends in the data. Based on the information provided, you can make changes to improve performance, set up situations, and verify that changes made are improving performance.
A channel provides a communications link between two queue managers (running on the same or different platforms) and shields application programs from having to deal with the complexities of a network underlying protocols. A channel consists of a transmission queue, a message channel agent (communications program), and a communications link.
Note that statistics are not collected from client connection channel definitions and therefore these are not listed in any of the Channel Performance workspaces.
The IBM MQ Monitoring agent also provides current and historical versions of this workspace.
Predefined views
The Recent Channel Performance workspace includes the following predefined views:
- Recent Channel Performance This view displays a list of
monitored channels. It provides statistics collected over several
sampling intervals, which you can use to view trends in the data.
The first row, Interval Summary, contains the averages of the attribute
values listed in subsequent rows. If there are more than one active
channels with the same channel and connection names, then multiple
sets of recent history are displayed, one for each active connection.
This can occur for receiver, cluster receiver, or server connection
channels.
You can use this view to monitor the depth of the transmission queue. If this becomes very deeps and remains so for a long time, consider assigning more channels to the queue to improve performance. This type of problem is especially common if your system has a high volume of traffic, different message priorities or uses different types of queues. Use the information related to sequence numbers and logical units of work when performing channel recovery or restart operations.
- Transmission Rates This view shows, as a bar chart, the average transmission rates of each of the selected monitored channels. It provides statistics collected over several sampling intervals, which you can use to view trends in the data.
For more information on the attributes listed in the tables of this workspace, see Channel Short-Term History attributes.
Predefined links
No other workspaces can be linked to from the Recent Channel Performance workspace.