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From "James Strachan" <james.strac...@gmail.com>
Subject Re: Transacted session commit is slow
Date Wed, 05 Sep 2007 08:38:26 GMT
As described on AMQ_1156, why not use

?socket.tcpNoDelay=true


On 9/5/07, Dziugas Baltrunas <dziugas@baltrunas.lt> wrote:
> Hi,
>
> I hope tcpNoDelay flag will be updated in next release of ActiveMQ.
> For those using 4.1.1 version there are two workarounds:
>
> 1. Modify the source code as described in AMQ-1156.
> 2. In lib/activemq-core-4.1.1.jar edit
> META-INF/services/org/apache/activemq/transport/tcp and change
>
> class=org.apache.activemq.transport.tcp.TcpTransportFactory
>
> to
>
> class=your.package.YourTcpTransportFactory
>
> Then create your.package.YourTcpTransportFactory class witch extends
> org.apache.activemq.transport.tcp.TcpTransportFactory and overrides
> single method as follows:
>
> public class YourTcpTransportFactory extends TcpTransportFactory {
>
>   public Transport compositeConfigure(Transport transport, WireFormat
> format, Map options) {
>     TcpTransport tcpTransport = (TcpTransport)
> transport.narrow(TcpTransport.class);
>     tcpTransport.setTcpNoDelay(new Boolean(true));
>     return super.compositeConfigure(transport, format, options);
>   }
> }
>
> Don't forget to put your class in ActiveMQ classpath. One way is to
> pack YourTcpTransportFactory into jar and put in ActiveMQ lib/ folder.
>
> Regards,
> Dziugas Baltrunas
>
> On 9/4/07, Dziugas Baltrunas <dziugas@baltrunas.lt> wrote:
> > Hi,
> >
> > what is the right way to turn off TCP_NODELAY on Apache ActiveMQ 4.1.1
> > (server side)? Looks like none of the options (socket.tcpNoDelay,
> > wireFormat.tcpNoDelayEnabled, tcpNoDelay) work as described in
> > AMQ-1156.
> >
> > Regards,
> > Dziugas Baltrunas
> >
> > On 9/4/07, James Strachan <james.strachan@gmail.com> wrote:
> > > On 9/4/07, Dziugas Baltrunas <dziugas@baltrunas.lt> wrote:
> > > > Hi again,
> > > >
> > > > looks like I was wrong - running daemon on Windows increases the
> > > > performance dramatically and I can now consume 1000 messages with
> > > > commit after each message in less then 500 ms. And this is client
> > > > independent, i.e. both consumer from Linux and Windows can consume
> > > > fast from ActiveMQ running on Windows but slow if ActiveMQ runs on
> > > > Linux.
> > > >
> > > > So it appears that my problem is the same as described AMQ-1137.
> > > >
> > > > Any hints how to "tune" ActiveMQ running on Linux to speed up commit operations?
> > >
> > > Usually thats the nagler / tcp-nodelay issue
> > >
> > > --
> > > James
> > > -------
> > > http://macstrac.blogspot.com/
> > >
> >
>


-- 
James
-------
http://macstrac.blogspot.com/

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