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Thread: Max CCU for server E5-1620, 8G RAM, 8 HDD Raid 10

  1. #1
    Join Date
    Mar 2013
    Posts
    18

    Post Max CCU for server E5-1620, 8G RAM, 8 HDD Raid 10

    Hi all,
    My server info:
    CPU: E5-1620
    RAM: 8G
    8HDD x 3T Raid 10 (Seagate® Constellation™ ES.2 SATA 6Gb/s 7200rpm 64MB 3.0TB)
    uplink: 4G
    ------------------
    how many ccu can use on my server, please help me Benchmark Performance.

    thanks.
    Last edited by thuannd.en061; 03-11-2013 at 03:24 AM.

  2. #2
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi
    For a "live" stream with a bitrate of 500 kbps I estimate an absolute maximum of 8000 concurrent users based on the network but if you're bonding GigE's together maybe 7000.
    For "on demand" streaming which I assume will be the main use of this server, it's hard to say as you would need to speed test the array with load.

    You can get the Wowza load test tool which supports on demand load testing from here,
    http://www.wowza.com/forums/content....Load-Test-Tool

    The server will also need to be tuned and a tuning guide can be found here,
    http://www.wowza.com/forums/content....ormance-tuning

    Jason

  3. #3
    Join Date
    Mar 2013
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    18

    Default

    Hi Jason,
    I use loadtool with info:
    <Name>workerCount</Name>
    <Value>8000</Value>

    <Name>fileCount</Name>
    <Value>10</Value>

    <Name>connectionString</Name>
    <Value>vod/_definst_</Value>

    Video file size: 500MB
    Video bitrate: 700kpbs

    But traffic network only up to 2Mpbs, please help me config loadtool 2.2.4

    thanks

  4. #4
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    It's probably much more than the load test tool can produce. You might have to use 3 or 4 load test clients

    Richard

  5. #5
    Join Date
    Dec 2007
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    Correction, I meant it is more than the client (server you are running the load test client on) and/or network can handle. It is possible that it is the limit of the test server's network bandwidth.

    Richard

  6. #6
    Join Date
    Mar 2013
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    Hi Richard,
    thank you very much.

  7. #7
    Join Date
    Mar 2013
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    18

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    Hi Richard,
    My server used NIC bonding (1 + 1) with 2G bw, I have download files test bw up to 1.9G, but when i used WowzaMediaServer loadtool with: 1200 ccu and 1.3G bw, java had die, wowza die, please help me config.

    my file config info:

    VHost.xml
    <Root>
    	<VHost>
    		<HostPortList>
    			<HostPort>
    				<ProcessorCount>24</ProcessorCount>
    				<IpAddress>*</IpAddress>
    				<Port>1935</Port>
    				<SocketConfiguration>
    					<ReuseAddress>true</ReuseAddress>
    					<ReceiveBufferSize>120000</ReceiveBufferSize>
    					<SendBufferSize>120000</SendBufferSize>
    					<KeepAlive>true</KeepAlive>
    					<AcceptorBackLog>100</AcceptorBackLog>
    				</SocketConfiguration>
    				<HTTPStreamerAdapterIDs>cupertinostreaming,smoothstreaming</HTTPStreamerAdapterIDs>
    				<HTTPProviders>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPCrossdomain</BaseClass>
    						<RequestFilters>*crossdomain.xml</RequestFilters>
    						<AuthenticationMethod>none</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPClientAccessPolicy</BaseClass>
    						<RequestFilters>*clientaccesspolicy.xml</RequestFilters>
    						<AuthenticationMethod>none</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPServerVersion</BaseClass>
    						<RequestFilters>*</RequestFilters>
    						<AuthenticationMethod>admin-digest</AuthenticationMethod>
    					</HTTPProvider>
    				</HTTPProviders>
    			</HostPort>
    
    			<!-- Admin HostPort -->
    			<HostPort>
    				<ProcessorCount>1</ProcessorCount>
    				<IpAddress>*</IpAddress>
    				<Port>8086</Port>
    				<SocketConfiguration>
    					<ReuseAddress>true</ReuseAddress>
    					<ReceiveBufferSize>16000</ReceiveBufferSize>
    					<SendBufferSize>16000</SendBufferSize>
    					<KeepAlive>true</KeepAlive>
    					<AcceptorBackLog>100</AcceptorBackLog>
    				</SocketConfiguration>
    				<HTTPStreamerAdapterIDs></HTTPStreamerAdapterIDs>
    				<HTTPProviders>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.streammanager.HTTPStreamManager</BaseClass>
    						<RequestFilters>streammanager*</RequestFilters>
    						<AuthenticationMethod>admin-digest</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPServerInfoXML</BaseClass>
    						<RequestFilters>serverinfo*</RequestFilters>
    						<AuthenticationMethod>admin-digest</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPConnectionInfo</BaseClass>
    						<RequestFilters>connectioninfo*</RequestFilters>
    						<AuthenticationMethod>admin-digest</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPConnectionCountsXML</BaseClass>
    						<RequestFilters>connectioncounts*</RequestFilters>
    						<AuthenticationMethod>admin-digest</AuthenticationMethod>
    					</HTTPProvider>
    					<HTTPProvider>
    						<BaseClass>com.wowza.wms.http.HTTPServerVersion</BaseClass>
    						<RequestFilters>*</RequestFilters>
    						<AuthenticationMethod>none</AuthenticationMethod>
    					</HTTPProvider>
    				</HTTPProviders>
    			</HostPort>
    		
    		</HostPortList>
    		
    		<HTTPStreamerAdapters>
    			<HTTPStreamerAdapter>
    				<ID>smoothstreaming</ID>
    				<Name>smoothstreaming</Name>
    				<Properties>
    				</Properties>
    			</HTTPStreamerAdapter>
    			<HTTPStreamerAdapter>
    				<ID>cupertinostreaming</ID>
    				<Name>cupertinostreaming</Name>
    				<Properties>
    				</Properties>
    			</HTTPStreamerAdapter>
    		</HTTPStreamerAdapters>
    
    		<HandlerThreadPool>
    			<PoolSize>480</PoolSize>
    		</HandlerThreadPool>
    		<TransportThreadPool>
    			<PoolSize>320</PoolSize>
    		</TransportThreadPool>
    		<IdleWorkers>
    			<WorkerCount>24</WorkerCount>
    			<CheckFrequency>50</CheckFrequency>
    			<MinimumWaitTime>5</MinimumWaitTime>
    		</IdleWorkers>
    		<NetConnections>
    			<ProcessorCount>16</ProcessorCount>
    			<IdleFrequency>250</IdleFrequency>
    			<SocketConfiguration>
    				<ReuseAddress>true</ReuseAddress>
    				<ReceiveBufferSize>65000</ReceiveBufferSize>
    				<SendBufferSize>24000</SendBufferSize>
    				<KeepAlive>true</KeepAlive>
    				<AcceptorBackLog>100</AcceptorBackLog>
    			</SocketConfiguration>
    		</NetConnections>
    		<HTTPTunnel>
    			<KeepAliveTimeout>2000</KeepAliveTimeout>
    		</HTTPTunnel>
    		<Client>
    			<ClientTimeout>90000</ClientTimeout>
    			<IdleFrequency>250</IdleFrequency>
    		</Client>
    		<!-- RTP/Authentication/Methods defined in Authentication.xml. Default setup includes; none, basic, digest -->
    		<RTP>
    			<IdleFrequency>75</IdleFrequency>
    			<DatagramConfiguration>
    				<Incoming>
    					<ReuseAddress>true</ReuseAddress>
    					<ReceiveBufferSize>256000</ReceiveBufferSize>
    					<SendBufferSize>65000</SendBufferSize>
    					<MulticastTimeout>50</MulticastTimeout>
    					<DatagramMaximumPacketSize>4096</DatagramMaximumPacketSize>
    				</Incoming>
    				<Outgoing>
    					<ReuseAddress>true</ReuseAddress>
    					<ReceiveBufferSize>65000</ReceiveBufferSize>
    					<SendBufferSize>65000</SendBufferSize>
    					<MulticastTimeout>50</MulticastTimeout>
    					<DatagramMaximumPacketSize>4096</DatagramMaximumPacketSize>
    				</Outgoing>
    			</DatagramConfiguration>
    			<UnicastIncoming>
    				<ProcessorCount>12</ProcessorCount>
    			</UnicastIncoming>
    			<UnicastOutgoing>
    				<ProcessorCount>24</ProcessorCount>
    			</UnicastOutgoing>
    			<MulticastIncoming>
    				<ProcessorCount>12</ProcessorCount>
    			</MulticastIncoming>
    			<MulticastOutgoing>
    				<ProcessorCount>12</ProcessorCount>
    			</MulticastOutgoing>
    		</RTP>
    		<Application>
    			<ApplicationTimeout>60000</ApplicationTimeout>
    			<PingTimeout>12000</PingTimeout>
    			<ValidationFrequency>20000</ValidationFrequency>
    			<MaximumPendingWriteBytes>0</MaximumPendingWriteBytes>
    			<MaximumSetBufferTime>60000</MaximumSetBufferTime>
    		</Application>
    		<StartStartupStreams>true</StartStartupStreams>
    		<!-- Properties defined here will be added to the IVHost.getProperties() collection -->
    		<Properties>
    		</Properties>
    	</VHost>
    </Root>
    wms.sh
    #!/bin/sh
    
    # NOTE: Here you can configure the JVM's built in JMX interface.
    # See the "Server Management Console and Monitoring" chapter
    # of the "User's Guide" for more information on how to configure the
    # remote JMX interface in the [install-dir]/conf/Server.xml file.
    
    JMXOPTIONS=-Dcom.sun.management.jmxremote=true
    
    if [ "$WMSCOMMAND" != "start" ]; then
            JMXOPTIONS=""
    fi
    
    ulimit -n unlimited
    
    # log interceptor com.wowza.wms.logging.LogNotify - see Javadocs for ILogNotify
    
    $_EXECJAVA $JAVA_OPTS $JMXOPTIONS -Dcom.wowza.wms.AppHome="$WMSAPP_HOME" -Dcom.wowza.wms.ConfigURL="$WMSCONFIG_URL" -Dcom.wowza.wms.ConfigHome="$WMSCONFIG_HOME" -cp $WMSAPP_HOME/bin/wms-bootstrap.jar com.wowza.wms.bootstrap.Bootstrap $WMSCOMMAND >/dev/null 2>&1 &
    if [ "$WMSCOMMAND" = "start" ]; then
    	echo $! > ${WMSPIDFILE}
    	wait $!
    fi
    exit 0
    setenv.sh
    #!/bin/sh
    
    _EXECJAVA=java
    #JAVA_OPTS="-Xmx1200M"
    JAVA_OPTS="-Xmx8000M"
    
    # Uncomment to run server environment (faster), Note: will only work if server VM install, comes with JDL
    JAVA_OPTS="$JAVA_OPTS -server"
    
    # Can be a better GC setting to avoid long pauses
    #JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+UseParNewGC"
    #JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewSize=512m"
    
    # Uncomment to fix multicast crosstalk problem when streams share multicast port
    #JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true"
    
    WMSAPP_HOME=/usr/local/WowzaMediaServer
    WMSCONFIG_HOME=/usr/local/WowzaMediaServer
    WMSCONFIG_URL=
    
    export WMSAPP_HOME WMSCONFIG_HOME JAVA_OPTS _EXECJAVA

  8. #8
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    It looks like you have tuned for 12 cores. Do you have 12 core machine?

    Do you have enough available memory to allocate 8000M java heap size?

    Show the most recent startup lines from your access log, from the last time you re-started Wowza.

    Richard

  9. #9
    Join Date
    Mar 2013
    Posts
    18

    Default

    Hi Richard,
    My server have 6 core thread 12
    I have change my server info:
    CPU: E5-2620
    RAM: 16G
    8HDD x 3T Raid 10 (Seagate® Constellation™ ES.2 SATA 6Gb/s 7200rpm 64MB 3.0TB)
    uplink: 2G (bonding mode 5)

    WowzaMediaServer_access_log
    #Version: 1.0
    #Start-Date: 2013-03-18 15:27:24 ICT
    #Software: Wowza Media Server 2.2.4 build27452
    #Date: 2013-03-18
    #Fields: date   time    tz      x-event x-category      x-severity      x-status        x-ctx   x-comment       x-vhost x-app   x-appinst       x-duration      s-ip    s-port  s-uri   c-ip    c-proto c-referrer      c-user-agent    c-client-id     cs-bytes        sc-bytes        x-stream-id     x-spos  cs-stream-bytes sc-stream-bytes x-sname x-sname-query   x-file-name     x-file-ext      x-file-size     x-file-length   x-suri  x-suri-stem     x-suri-query    cs-uri-stem     cs-uri-query
    2013-03-18      15:27:25        ICT     server-start    server  INFO    200     Wowza Media Server 2 Perpetual 2.2.4 build27452 -       -       -       -       0.918   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Serial number: XXXXX-XXXXX-XXXXX-XXXXX-*****    -       -       -       0.92    -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Maximum connections: Unlimited  -       -       -       0.921   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Hardware Available Processors: 12       -       -       -       0.922   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Hardware Physical Memory: 764MB/15927MB -       -       -       0.923   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Hardware Swap Space: 15990MB/15999MB    -       -       -       0.924   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Max File Descriptor Count: 4096 -       -       -       0.925   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Open File Descriptor Count: 45  -       -       -       0.926   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       OS Name: Linux  -       -       -       0.926   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       OS Version: 2.6.32-358.el6.x86_64       -       -       -       0.927   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -
    2013-03-18      15:27:25        ICT     comment server  INFO    200     -       OS Architecture: amd64  -       -       -       0.927   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Name: Java HotSpot(TM) 64-Bit Server VM    -       -       -       0.928   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Vendor: Oracle Corporation -       -       -       0.929   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Version: 1.7.0     -       -       -       0.929   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java VM Version: 21.0-b17       -       -       -       0.93    -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Spec Version: 1.7  -       -       -       0.93    -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Home: /usr/java/jdk1.7.0/jre       -       -       -       0.93    -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Max Heap Size: 7111MB      -       -       -       0.931   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Architecture: 64   -       -       -       0.931   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Encoding[file.encoding]: UTF-8     -       -       -       0.932   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[0]: -Xmx8000M -       -       -       0.932   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[1]: -Djava.net.preferIPv4Stack=true   -       -       -       0.933   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[2]: -Dcom.sun.management.jmxremote=true       -       -       -       0.933   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[3]: -Dcom.wowza.wms.AppHome=/usr/local/WowzaMediaServer       -       -       -       0.933   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[4]: -Dcom.wowza.wms.ConfigURL=        -       -       -       0.934   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java Args[5]: -Dcom.wowza.wms.ConfigHome=/usr/local/WowzaMediaServer    -       -       -       0.934   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java GC[0]: PS Scavenge -       -       -       0.935   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Java GC[1]: PS MarkSweep        -       -       -       0.936   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:25        ICT     comment server  INFO    200     -       Server threads[h/t]: 10/10      -       -       -       0.936   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:26        ICT     comment server  INFO    200     -       CMDInterface now listening: [any]:8083  -       -       -       2.698   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     vhost-start     vhost   INFO    200     _defaultVHost_  -       -       -       -       3.374   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment server  INFO    200     -       _defaultVHost_ threads[h/t]:480/320 home:/usr/local/WowzaMediaServer    -       -       -       3.439   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment vhost   INFO    200     _defaultVHost_  Bind attempt ([any]:1935:16)    -       -       -       3.443   -       -       -       -       -      
     -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment vhost   INFO    200     _defaultVHost_  Bind successful ([any]:1935)    -       -       -       3.446   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment vhost   INFO    200     _defaultVHost_  Bind attempt ([any]:8086:1)     -       -       -       3.448   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment vhost   INFO    200     _defaultVHost_  Bind successful ([any]:8086)    -       -       -       3.452   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:27        ICT     comment server  INFO    200     -       Wowza Media Server is started!  -       -       -       3.458   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:29        ICT     comment server  WARN    200     -       ApplicationInstance.setHTTPStreamerList[MyStream_film/_definst_]: HTTPStreamer is not valid: sanjosestreaming   -       -       -       5.257   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:29        ICT     comment server  INFO    200     -       SecureTokenTarget: create:true play:false publish:false -       -       -       5.311   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -2013-03-18      15:27:29        ICT     app-start       application     INFO    200     _definst_       MyStream_film/_definst_ -       -       -       5.356   -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -       -

  10. #10
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    This line shows there is very little available memory when you started Wowza:

    Hardware Physical Memory: 764MB/15927MB
    The number on the left is available memory, on the right it is total memory. So there might be a lot of other activity on this server, other services.

    Richard

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