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The status panel is split into 2 main sections. The
top section shows real time graphs representing the
events published and consumed on the channel, both in
terms of rates (i.e. per status interval) as well as
the totals.
The bottom section shows the actual values plotted
in the graphs for events published and consumed, as
well as information about the actual channel store at
the server.
The image below shows the status panel for an active
cluster channel.
The top most graph in the panel shows the event history
for events consumed from the channel. The red line graphs
the rates at which events are being consumed while the
yellow line graphs the total events consumed from the
channel.
The bottom graph shows the event history for events
published to the channel. The red line graphs the rates
at which events are being published while the yellow
line graphs the total events published to the channel.
As the status events are consumed, and the channel (nLeafNode)
is updated with the new values for events consumed and
published, the status panel and its graphs will be updated.
The bottom section of the status panel shows 3 types
of information : Totals, Rates and Event Store. These
are discussed below.
Totals
The totals section shows 5 values:
Published - The total number of
events published to the channel when the last status
events was consumed
Consumed - The total number of events
consumed from the channel when the last status event
was consumed
Event ID - The event id of the last
event published to the channel
Current Conections - The current
number of consumers on the channel
Total Connections - Total number
of subscribers that have subscribed to the channel
Rates
The rates section shows 3 values:
Published - The current rate of
events published to the channel, calculated as (total
- previous total) / (interval 1000 millseconds)
Consumed - The current rate of events
consumed from the channel, calculated as (total -
previous total) / (interval 1000 millseconds)
Conections - The current rate of
subscriptions being made to the channel
Event Store
The event store section shows 4 values:
Used Space - The amount of space
in KB used by the channel on the server (either memory,
or disk for persistent / mixed channels)
Events - The current number of events
on the channel
% Free - The amount of free space
in the channel store (calculated as (used space -
(total space used by all purged or aged events))
Cache Hit - The %age of events consumed
from the channel event cache as opposed form the actual
physical store if persistent or mixed
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