Return-Path: Delivered-To: apmail-activemq-users-archive@www.apache.org Received: (qmail 2437 invoked from network); 27 Nov 2008 01:58:48 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 27 Nov 2008 01:58:48 -0000 Received: (qmail 69717 invoked by uid 500); 27 Nov 2008 01:58:59 -0000 Delivered-To: apmail-activemq-users-archive@activemq.apache.org Received: (qmail 69696 invoked by uid 500); 27 Nov 2008 01:58:59 -0000 Mailing-List: contact users-help@activemq.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: users@activemq.apache.org Delivered-To: mailing list users@activemq.apache.org Received: (qmail 69684 invoked by uid 99); 27 Nov 2008 01:58:59 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 26 Nov 2008 17:58:59 -0800 X-ASF-Spam-Status: No, hits=3.7 required=10.0 tests=DNS_FROM_OPENWHOIS,FORGED_HOTMAIL_RCVD2,SPF_HELO_PASS,SPF_PASS,WHOIS_MYPRIVREG X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of lists@nabble.com designates 216.139.236.158 as permitted sender) Received: from [216.139.236.158] (HELO kuber.nabble.com) (216.139.236.158) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 27 Nov 2008 01:57:32 +0000 Received: from isper.nabble.com ([192.168.236.156]) by kuber.nabble.com with esmtp (Exim 4.63) (envelope-from ) id 1L5W94-0005Pv-Ky for users@activemq.apache.org; Wed, 26 Nov 2008 17:58:18 -0800 Message-ID: <20712395.post@talk.nabble.com> Date: Wed, 26 Nov 2008 17:58:18 -0800 (PST) From: WhiteSock To: users@activemq.apache.org Subject: Question about RoundRobbinDispatchPolicy MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Nabble-From: whitesock1979@hotmail.com X-Virus-Checked: Checked by ClamAV on apache.org 1 Start consumer A which subscribes Queue1, it receives the message without delay. 2 Start consumer B which subscribes Queue1, it delays 5 seconds after receiving every messages(sleep 5 seconds in onMessage method). 3 Start producer C and send a message(message0, message1, message2, message3...) to Queue1 every 1 second. 4 consumer A got message0, message2, message4, message6, message8, message10... consumer B got message1, message3, message5... That is to say consumer A got messages with even id, consumer B got messages with odd id. Since consumer B is relatively slow, there are some messages with odd id accumulated in Queue1. 5 consumer A is relatively fast, why not let consumer A consume more messages? Is it related to RoundRobbinDispatchPolicy? Cheers. -- View this message in context: http://www.nabble.com/Question-about-RoundRobbinDispatchPolicy-tp20712395p20712395.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.