5.3.2, 5.4.1, and 5.5-SNAPSHOT -- doesn't matter which version, but I'm currently running 5.5-SNAPSHOT. It's running with the stock persistence enabled and the stock -Xmx memory settings.
PROBLEM: as consumers slow down, producers slow down -- despite producerFlowControl explicitly being disabled. I'm having trouble understanding what AUTHORITATIVELY enables/disables producer flow control. This page (http://activemq.apache.org/producer-flow-control.html) talks about conditions that would cause flow control to happen. It's extremely vague about memoryLimit, systemUsage, etc., but it implies that those are factored in. But it also says you can disable flow control...which I have done. What's authoritative? Why is ActiveMQ doing flow control when I asked it not to? Here's a snippet from my activemq.xml: <policyEntry queue=">" producerFlowControl="false" memoryLimit="20mb"> <pendingQueuePolicy> <vmQueueCursor/> </pendingQueuePolicy> </policyEntry> I'm doing sync sends to my queue (at least I believe I am, by virtue of NOT doing explicitly async sends). As consumers slow down, the producers get blocked. Can somebody please tell me why producer flow control is still kicking in? If the policyEntry->producerFlowControl setting is not AUTHORITATIVE, maybe somebody can tell me what is? Is the vmQueueCursor conflicting with producerFlowControl="false" in some way? Are the default systemUsage/memoryLimit settings conflicting or causing producer flow control to kick in? Is the memoryLimit="20mb" on my queue conflicting? The biggest piece that I don't understand is: (a) IF a queue grows in size beyond some limit (which is very hazy to me) it allows producer flow control to kick in, and (b) if that's the case, how is that limit derived? The combination of systemUsage/memoryLimit settings have always been extremely elusive to me. I really need help understanding how I can, WITHOUT QUESTION, turn producer flow control OFF COMPLETELY. Thanks! ----- Dan Checkoway dcheckoway gmail com -- View this message in context: http://activemq.2283324.n4.nabble.com/Producer-Flow-Control-what-is-AUTHORITATIVE-tp3029064p3029064.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
