ic. sounds much reasonable. thanks for the explanation. the more i look at it, the more i think qmf is a right choice. now just need to find more complete examples.
Ming On Mon, Oct 12, 2009 at 5:10 PM, Carl Trieloff <cctriel...@redhat.com> wrote: > > if the mgnt interval is 10 seconds for the agent, then the value can change > n times, and only 1 update will > be sent at the 10 second mark. > > if you care about hi/low etc, these are data types in QMF, that can give you > current/hi/low value > etc for the inteval. > > Alternatively you can 'pull' the data you care about when you care about it > and not subscribe to the auto > publish. > > Carl. > > > Ming Zhang wrote: >> >> ok. so if only changed value is sent out, if agent code change value >> 1, then value 2, will 2 messages sent out? that is still expensive? or >> need to have a explicitly push action so multi change will be combined >> in one message, which supposed to be more efficient? thanks. >> >> >> >> Ming >> >> >> On Mon, Oct 12, 2009 at 4:59 PM, Carl Trieloff <cctriel...@redhat.com> >> wrote: >> >>> >>> Ming Zhang wrote: >>> >>>> >>>> Hi All >>>> >>>> Read this http://qpid.apache.org/qmf-protocol.html and have a question >>>> about it. >>>> >>>> "This message contains a content record. Content records contain the >>>> values of all properties or statistics in an object. Such records are >>>> broadcast on a periodic interval if 1) a change has been made in the >>>> value of one of the elements, or 2) if a new management client has >>>> bound a queue to the management exchange." >>>> >>>> If a full content record is sent for any value change, this sounds >>>> very expensive. Why not only send up the changed value? >>>> >>>> Did I misunderstand something? >>>> >>> >>> only value that have changed after the initial broadcast or send on an >>> aggregated basis on the mgnt interval >>> >>> Carl. >>> >>> --------------------------------------------------------------------- >>> Apache Qpid - AMQP Messaging Implementation >>> Project: http://qpid.apache.org >>> Use/Interact: mailto:users-subscr...@qpid.apache.org >>> >>> >>> >> >> --------------------------------------------------------------------- >> Apache Qpid - AMQP Messaging Implementation >> Project: http://qpid.apache.org >> Use/Interact: mailto:users-subscr...@qpid.apache.org >> >> > > --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:users-subscr...@qpid.apache.org
