TopicMetrics
Topic metrics.
Object name format
The objectName for MBeans of this type is of the following form: com.pushtechnology.diffusion:type=TopicMetrics,server="server_name"[,name="metric collector name"]
Attributes
| Name | Type | Read/Write | Description |
|---|---|---|---|
| bytes | long | read | Stored data in bytes. |
| count | long | read | Current number of topics. |
| deltaBytes | long | read | Each change of value increases this metric by the size of the delta representing the difference between the previous and new values. |
| deltaCompressionRatio | double | read | A value between 0 and 1 representing the achievable delta compression. The calculation is: valueBytes == 0 ? 0 : 1 - deltaBytes/valueBytes. |
| deltaUpdates | long | read | Number of updates providing a delta. |
| persistenceBytes | long | read | Data stored in-memory for persistence, in bytes. |
| subscriberUpdateBytes | long | read | Value and delta update bytes sent to subscribers, before message compression. |
| subscriberUpdateCompressedBytes | long | read | Value and delta update bytes sent to subcribers, after message compression. |
| subscriberUpdates | long | read | Number of updates sent to subscribers. |
| subscribers | long | read | Number of sessions with direct subscriptions. |
| subscriptions | long | read | Number of direct subscriptions. |
| total | long | read | Total topics created since the server started. |
| valueBytes | long | read | Each change of value increases this metric by the size of the new value. |
| valueCount | long | read | The number of topic values stored. This may not equal the numberof topics; topics which don't retain a value will have no values, and time seriestopics may have more than one |
| valueUpdates | long | read | Number of updates providing a full value. |