fsync on a laptop is often ignored by the OS, try with <kahaDB enableJournalDiskSyncs="false" ..> to disable the fsync call to see if the results are better on your server box which is most likely respecting the fsync call on every send. To avoid a fsync on every send, use a send transaction (transacted session) to batch requests or use parallel producers so that kahaDB can batch the concurrent writes into a single fsync.
On 27 July 2013 11:20, ariskk <kostas.koug...@googlemail.com> wrote: > I am running a stress test of activemq. I am publishing a big string 10000 > times on a queue. It all works very fast on my laptop but on my desktop > (which has faster disks) it is very slow. Also on the desktop I can hear the > disk struggling to cope, like it tries to do a lot of seeks. > > Here is how I start up activemq: > > ./activemq console > xbean:/home/ariskk/idea-workspace/backend/config/jms/activemq-stress.xml > INFO: Using default configuration > (you can configure options in one of these file: /etc/default/activemq > /home/ariskk/.activemqrc) > > INFO: Invoke the following command to create a configuration file > ./activemq setup [ /etc/default/activemq | /home/ariskk/.activemqrc ] > > INFO: Using java '/home/ariskk/programs/jdk/bin/java' > INFO: Starting in foreground, this is just for debugging purposes (stop > process by pressing CTRL+C) > Java Runtime: Oracle Corporation 1.7.0_25 /home/ariskk/programs/jdk/jre > Heap sizes: current=1004928k free=994439k max=1004928k > JVM args: -Xms1G -Xmx1G > -Djava.util.logging.config.file=logging.properties > -Dcom.sun.management.jmxremote > -Djava.io.tmpdir=/home/ariskk/programs/apache-activemq/tmp > -Dactivemq.classpath=/home/ariskk/programs/apache-activemq/conf; > -Dactivemq.home=/home/ariskk/programs/apache-activemq > -Dactivemq.base=/home/ariskk/programs/apache-activemq > -Dactivemq.conf=/home/ariskk/programs/apache-activemq/conf > -Dactivemq.data=/home/ariskk/programs/apache-activemq/data > Extensions classpath: > > [/home/ariskk/programs/apache-activemq/lib,/home/ariskk/programs/apache-activemq/lib/camel,/home/ariskk/programs/apache-activemq/lib/optional,/home/ariskk/programs/apache-activemq/lib/web,/home/ariskk/programs/apache-activemq/lib/extra] > ACTIVEMQ_HOME: /home/ariskk/programs/apache-activemq > ACTIVEMQ_BASE: /home/ariskk/programs/apache-activemq > ACTIVEMQ_CONF: /home/ariskk/programs/apache-activemq/conf > ACTIVEMQ_DATA: /home/ariskk/programs/apache-activemq/data > Loading message broker from: > xbean:/home/ariskk/idea-workspace/backend/config/jms/activemq-stress.xml > INFO | Refreshing org.apache.activemq.xbean.XBeanBrokerFactory$1@11cdf8a: > startup date [Sat Jul 27 11:08:07 BST 2013]; root of context hierarchy > INFO | > PListStore:[/run/media/ariskk/raptor1/activemq-data/localhost/tmp_storage] > started > INFO | Using Persistence Adapter: > KahaDBPersistenceAdapter[/run/media/ariskk/raptor1/activemq-data/kahadb] > INFO | JMX consoles can connect to > service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi > INFO | KahaDB is version 4 > INFO | Recovering from the journal ... > INFO | Recovery replayed 1 operations from the journal in 0.019 seconds. > INFO | Apache ActiveMQ 5.8.0 (localhost, > ID:localhost.localdomain-41270-1374919689650-0:1) is starting > INFO | Listening for connections at: > tcp://localhost.localdomain:60001?maximumConnections=1000&wireformat.maxFrameSize=104857600 > INFO | Connector openwire Started > INFO | Apache ActiveMQ 5.8.0 (localhost, > ID:localhost.localdomain-41270-1374919689650-0:1) started > INFO | For help or more information please see: http://activemq.apache.org > WARN | Store limit is 102400 mb, whilst the data directory: > /run/media/ariskk/raptor1/activemq-data/kahadb only has 32789 mb of usable > space > ERROR | Temporary Store limit is 51200 mb, whilst the temporary data > directory: /run/media/ariskk/raptor1/activemq-data/localhost/tmp_storage > only has 32789 mb of usable space > > > Here is my activemq config: > > <beans > xmlns="http://www.springframework.org/schema/beans"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > > xsi:schemaLocation="http://www.springframework.org/schema/beans > http://www.springframework.org/schema/beans/spring-beans.xsd > http://activemq.apache.org/schema/core > http://activemq.apache.org/schema/core/activemq-core.xsd";> > > <broker xmlns="http://activemq.apache.org/schema/core"; > brokerName="localhost" > dataDirectory="/run/media/ariskk/raptor1/activemq-data/"> > > <managementContext> > <managementContext createConnector="true"/> > </managementContext> > > <persistenceAdapter> > <kahaDB > directory="/run/media/ariskk/raptor1/activemq-data/kahadb"/> > </persistenceAdapter> > > > <transportConnectors> > <transportConnector name="openwire" > > uri="tcp://0.0.0.0:60001?maximumConnections=1000&wireformat.maxFrameSize=104857600"/> > </transportConnectors> > </broker> > </beans> > > > > -- > View this message in context: > http://activemq.2283324.n4.nabble.com/activemq-fast-on-laptop-but-slow-on-desktop-pc-tp4669815.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. -- http://redhat.com http://blog.garytully.com
