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From "Flavio Baronti (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-5334) Low throughput with thousands of queues
Date Tue, 12 Nov 2013 16:38:17 GMT
Flavio Baronti created QPID-5334:
------------------------------------

             Summary: Low throughput with thousands of queues
                 Key: QPID-5334
                 URL: https://issues.apache.org/jira/browse/QPID-5334
             Project: Qpid
          Issue Type: Improvement
          Components: C++ Broker, Java Client
    Affects Versions: 0.24
         Environment: Broker: Linux 2.6.32 64bit
Client: Windows 7, Java 1.7.0_21 64bit
            Reporter: Flavio Baronti


I have an use case where I need to create hundreds of thousands of queues,
each one subscribed to a different topic (therefore I have as many topics
as queues).
I set up a test with a single producer generating data on a randomly
chosen topic, and a receiver retrieving data from the queues (and throwing
it away).

I'm using the JMS api, and doing the obvious thing makes the throughput
drop dramatically from 10k msg/sec with a single topic/queue (around the
top my network adapter can sustain) to 20 msg/sec with 100k topics/queues.
I found out that I can recover performance by using more JMS sessions and
connections - e.g. create 4 connections with 100 sessions each, and
randomly distributing the receiving queues on them.
This however is less than ideal, since with the JMS client a thread is
created for each session, I can manage the workload with 1 thread only when it's over a single
queue.



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