hallo, it seems i completely messed up with my MDB application now. i tried the "activation spec" that you mentioned and it worked fine. then i thought ia lso try to set the InstanceLimit to 0. so i went to the config.xml file and changed the "MDB\ Container\ InstanceLimit=0" wrong thing to do. after that i did not receive the wanted updates anymore in the database. i increased the value again to "maxPool" size.. and since that at startup of the server or at deploy time i always realize that some messages are delivered but then it stops again. i dont even send messages anymore, the messages that are delivered are from a test 2 hours ago!
i also tried to restart the database, restart the server, computer, everything. and tried to start with an empty db. the only thing i realize is that at startup or deploytime of my application it sends some 10 messages to the queue and after this it stops. by the way.. i already set the values back to their initial state.. but no effect.. i keep having this error and not possible to deliver any new messages.. just everytime i start i see more 10 values being changed in the database. can anyone help me, please. thanks, mario 2008/3/23, Manu George <[EMAIL PROTECTED]>: > > You may have tried this out but increasing the maxMessagesPerSession > activation config property will increase the prefetch size and > generally speed it up a bit more. I assume u have already increased > the maxSessions activation config property to increase the no of > parallel Mdb instances. Here is a link for the properties that AMQ > allows http://activemq.apache.org/activation-spec-properties.html. The > configurable OpenEJB properties are given here > http://openejb.apache.org/example-generated-documentation.html. > > Try setting the InstanceLimit property of the MdbContainer to 0 so > that the no of instances created matches the no of AMQ sessions > available. For setting this you need to set this as a system property. > The property should be containerId.InstanceLimit where containerId is > of the format <artifactId>.<Resource Group Name>-<listener interface> > > eg: org.apache.geronimo.configs/activemq-ra/2.2-SNAPSHOT/car.ActiveMQ > RA-javax.jms.MessageListener > > ie <artifactId> = artifactId of the jms RA > <Resource Group Name> - The resource Group name u gave while creating the > RA > <listener interface> - javax.jms.MessageListener in this case > > So the property in this case can be set as > org.apache.geronimo.configs/activemq-ra/2.2-SNAPSHOT/car.ActiveMQ\ > RA-javax.jms.MessageListener.InstanceLimit=0 > > Regards > > Manu > > On Sun, Mar 23, 2008 at 4:49 PM, the666pack <[EMAIL PROTECTED]> > wrote: > > > > hello, > > > > i am trying to test the performance of geronimo under load for message > > driven beans. the observed behaviour is that i get a maximum of about > 85 > > transactions per second. after this, tested with about 60 concurrent > users, > > the performance drops again to about 45 tps. i hoped to increase the > > performance somehow.. things i already tried: > > > > -increase the mdb pool size > > -increase the thread pool size > > -increase the connector-thread-pool-size > > > > unfortunately nothing helped, the performance situation remains the > same. > > > > another observed behaviour is that in the time of silence between tests > the > > server needs some time to fulfill the requests sent before. so i see it > is > > still working although i am not sending mdb-requests anymore. > > > > i suppose these are the requests that are still in the queue and have > to be > > finished. i think this is the reason for the performance drop with more > > concurrent users. i would like to see it perform without this > > "aftertime-working" and handle the requests "in time". > > > > maybe someone can give me a hint which other values could be important > to > > change for the performance of mdbs getting real good. i thank you very > much > > for your help, > > > > greetings, > > > > mario > > -- > > View this message in context: > http://www.nabble.com/MDB-performance-tuning%2C-configuration-tp16234678s134p16234678.html > > Sent from the Apache Geronimo - Users mailing list archive at > Nabble.com. > > > > >
