Return-Path: 
 <users-return-33323-apmail-activemq-users-archive=activemq.apache.org@activemq.apache.org>
X-Original-To: apmail-activemq-users-archive@www.apache.org
Delivered-To: apmail-activemq-users-archive@www.apache.org
Received: from mail.apache.org (hermes.apache.org [140.211.11.3])
	by minotaur.apache.org (Postfix) with SMTP id 85A8EEFB7
	for <apmail-activemq-users-archive@www.apache.org>;
 Wed, 23 Jan 2013 20:22:44 +0000 (UTC)
Received: (qmail 53808 invoked by uid 500); 23 Jan 2013 20:22:44 -0000
Delivered-To: apmail-activemq-users-archive@activemq.apache.org
Received: (qmail 53740 invoked by uid 500); 23 Jan 2013 20:22:44 -0000
Mailing-List: contact users-help@activemq.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:users-help@activemq.apache.org>
List-Unsubscribe: <mailto:users-unsubscribe@activemq.apache.org>
List-Post: <mailto:users@activemq.apache.org>
List-Id: <users.activemq.apache.org>
Reply-To: users@activemq.apache.org
Delivered-To: mailing list users@activemq.apache.org
Received: (qmail 53729 invoked by uid 99); 23 Jan 2013 20:22:44 -0000
Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230)
    by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Jan 2013 20:22:43 +0000
X-ASF-Spam-Status: No, hits=2.0 required=5.0
	tests=SPF_NEUTRAL,URI_HEX,WEIRD_PORT
X-Spam-Check-By: apache.org
Received-SPF: neutral (nike.apache.org: local policy)
Received: from [216.139.250.139] (HELO joe.nabble.com) (216.139.250.139)
    by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 23 Jan 2013 20:22:38 +0000
Received: from [192.168.236.139] (helo=joe.nabble.com)
	by joe.nabble.com with esmtp (Exim 4.72)
	(envelope-from <frank.vanderhallen@portico.io>)
	id 1Ty6pq-0000Rk-7g
	for users@activemq.apache.org; Wed, 23 Jan 2013 12:22:14 -0800
Date: Wed, 23 Jan 2013 12:22:14 -0800 (PST)
From: Frank Vanderhallen <frank.vanderhallen@portico.io>
To: users@activemq.apache.org
Message-ID: <1358972534134-4662102.post@n4.nabble.com>
Subject: Apollo 1.5 MQTT - impossible to connect from many clients
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Virus-Checked: Checked by ClamAV on apache.org

Hello,

I've been trying how many MQTT connections I can have open at the same time
with Apollo 1.5, and I'm quite disappointed by the result.  I find it hard
to believe that Apollo cannot do better, so it might be a configuration
issue.  I'm adding MQTT clients, which publish a small message every 4
minutes, until Apollo stops accepting connections.  When the number of
connections reaches 50000, it starts to go wrong (both CPU's get to 100% cpu
usage, and they don't recover anymore).

This is the setup:

  - Amazon EC2 c1.medium instance
  - ulimit -a

        core file size               (blocks, -c) 0
        data seg size              (kbytes, -d) unlimited
        scheduling priority                  (-e) 0
        file size                       (blocks, -f) unlimited
        pending signals                       (-i) 59480
        max locked memory     (kbytes, -l) 64
        max memory size       (kbytes, -m) unlimited
        open files                              (-n) 999999
        pipe size                (512 bytes, -p) 8
        POSIX message queues  (bytes, -q) 819200
        real-time priority                    (-r) 0
        stack size                   (kbytes, -s) 8192
        cpu time                   (seconds, -t) unlimited
        max user processes                (-u) 59480
        virtual memory           (kbytes, -v) unlimited
        file locks                               (-x) unlimited

    - apollo.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<broker xmlns="http://activemq.apache.org/schema/activemq/apollo">

  <log_category console="console" security="security"
connection="connection" audit="audit"/>
  
  <authentication domain="apollo"/>
  
  <access_rule allow="admins" action="*"/>
  <access_rule allow="*" action="connect" kind="connector"/>
  
  <virtual_host id="testBroker">
    <host_name>testBroker</host_name>
    <host_name>localhost</host_name>
    <host_name>127.0.0.1</host_name>
    <host_name>****************.compute.amazonaws.com</host_name>

    <authentication enabled="false"/>
    <access_rule allow="users" action="connect create destroy send receive
consume"/>
  </virtual_host>

  <web_admin bind="http://****************.compute.amazonaws.com:61680"/>

  <connector id="mqtt" protocol="mqtt" bind="tcp://0.0.0.0:1883"/>
</broker>

I didn't find any documentation about the usage of MQTT in Apollo, so this
configuration might make no sense at all.  Any advice or pointers to more
information?

Thanks,
Frank



--
View this message in context: http://activemq.2283324.n4.nabble.com/Apollo-1-5-MQTT-impossible-to-connect-from-many-clients-tp4662102.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.