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https://issues.apache.org/activemq/browse/AMQ-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Davies reassigned AMQ-1143:
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Assignee: Rob Davies
> Need a way to set tcpNoDelay on peer transport TCP network connections
> ----------------------------------------------------------------------
>
> Key: AMQ-1143
> URL: https://issues.apache.org/activemq/browse/AMQ-1143
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Transport
> Affects Versions: 4.1.0
> Environment: Windows XP Professional / JRE 1.5.0_11
> Reporter: Andrew Steele
> Assignee: Rob Davies
> Fix For: 5.1.0
>
>
> I really like the peer transport in ActiveMQ. It seems to be just the kind
> of setup we need. However, we do have low round-trip latency requirements in
> some applications. I was seeing unacceptably bad latencies (~200ms) for
> synchronous round trips. I installed Wireshark and performed network
> analysis to see what was going on. It appeared to be a Nagle algorithm / TCP
> ACK delay issue. Essentially, after the first message request and reply, the
> next request message may be delayed while waiting for a delayed ACK from the
> other broker. This should be resolvable by enabling tcpNoDelay. However,
> the peer transport URI provides no mechanism to enable tcpNoDelay. In fact,
> I went into the source code and found that the TCP network connecter
> specified in the PeerTransportFactory is hard coded to tcp://localhost:0.
> Basically, I need a way to turn on tcpNoDelay in peer transport.
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