[ https://issues.apache.org/jira/browse/QPID-4632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Ross resolved QPID-4632. ---------------------------- Resolution: Fixed Fix Version/s: (was: Future) 0.21 Commit 1454601 > Change Threshold Alerts from Level-Sensitive to Edge-Triggered > -------------------------------------------------------------- > > Key: QPID-4632 > URL: https://issues.apache.org/jira/browse/QPID-4632 > Project: Qpid > Issue Type: Improvement > Components: C++ Broker > Affects Versions: 0.20 > Reporter: Ted Ross > Assignee: Ted Ross > Fix For: 0.21 > > Attachments: QPID-4632.patch > > > Queue threshold events are currently level-sensitive and require a > rate-limiting feature. Every time a message is enqueued and the queue depth > is above the configured threshold, an event is potentially raised. The > repeat-interval attribute prevents the event from being raised too frequently. > Also, there is no way to produce an event for a lower or going-down threshold. > The threshold feature should be changed to be edge-triggered as follows: > Per-queue configuration for thresholds is: > - upper-threshold (bytes and messages) > - lower-threshold (bytes and messages) > Two event types are (or one type with an argument) defined: > - threshold crossed increasing > - threshold crossed decreasing > The increasing event is raised when the queue depth goes from > (upper-threshold - 1) to upper-threshold. > The decreasing event is raised when the queue depth goes from > (lower-threshold + 1) to lower-threshold. > The upper and lower thresholds should have some gap between them to establish > hysteresis which will result in limited event rates. > Message and Byte thresholds will be handled independently. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org