Have you verified via broker logging that the prefetch values you've configured are being honored by the broker? Are consumer priorities in use? Are your consumers instances of the same executable or are they implemented individually?
Can you post your broker configuration: activemq.xml? How are your clients implemented, e.g., technology: Ruby or Java etc, choice of client libraries? Just wondering. Thanks, Paul On Tue, Nov 5, 2013 at 10:28 AM, Ned Wolpert <ned.wolp...@imemories.com> wrote: > Thanks for the response... > > Any idea on the round-robin not working? I have a queue with 16 consumers, > all have pre-fetch set to 1. Five consumers are actively processing > requests and 3 requests are pending.... the 11 other consumers are idle. > History has shown that a new request may go to one of the 11 idle works, > but its like those 3 requests are reserved for some of the working ones. I > can't figure out what setting would help this, or if this just was a bug > with 5.3.... > > > On Mon, Nov 4, 2013 at 4:37 PM, Christian Posta > <christian.po...@gmail.com>wrote: > >> The clients should negotiate the correct open-wire (protocol version) >> so in theory the broker will be backward compatible with older >> clients. Just make sure the activemq-openwire-legacy jar is on the >> classpath (should be by default). >> >> Of course I would test this out to make sure :) >> >> On Mon, Nov 4, 2013 at 10:20 AM, Ned Wolpert <ned.wolp...@imemories.com> >> wrote: >> > Folks- >> > >> > I have a 5.3 installation that we're using, and I have 2 questions for >> it: >> > >> > 1) We have prefetch set to 1 for all of the message consumers on one >> queue, >> > where message handling is slow. But it still seems like messages aren't >> > really 'round robin' to the next available message consumer. I'll see a >> few >> > consumers are free but messages are waiting around. Is there a >> > configuration that can help? (I should note that the server has been >> > running consistently for 9 months and it seems to be getting worse.... >> > would a restart help?) >> > >> > 2) We are looking to upgrade to 5.9. I haven't started the process of >> > testing, but I wanted to see if this is a case where the 5.3 clients need >> > to be upgraded at the same time as the server, or if the clients can be >> > rolled over a few weeks to 5.9 after the server gets updated? >> > >> > Thanks! >> > >> > -- >> > Virtually, Ned Wolpert >> > >> > "Settle thy studies, Faustus, and begin..." --Marlowe >> >> >> >> -- >> Christian Posta >> http://www.christianposta.com/blog >> twitter: @christianposta >> > > > > -- > Virtually, Ned Wolpert > > "Settle thy studies, Faustus, and begin..." --Marlowe
