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From "Rajith Attapattu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-3659) Java client mishandles tcp_nodelay when specified as part of the broker URL
Date Wed, 07 Dec 2011 19:26:41 GMT

    [ https://issues.apache.org/jira/browse/QPID-3659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13164636#comment-13164636

Rajith Attapattu commented on QPID-3659:

It is indeed due to not being quoted properly. 
However due to the really convoluted syntax there is an increased risk of people screwing
If the default value is false then it's a different matter, but in this case the default value
for TCP_NODELAY is true (from the 0.14 release).
Therefore any mistake by the end user will turn off TCP_NODELAY.
> Java client mishandles tcp_nodelay when specified as part of the broker URL
> ---------------------------------------------------------------------------
>                 Key: QPID-3659
>                 URL: https://issues.apache.org/jira/browse/QPID-3659
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Client
>    Affects Versions: 0.15
>            Reporter: Kim van der Riet
> When tcp_nodelay is set as part of the broker's address, the performance of the client
drops badly, no matter whether the value is set to 'true' or 'false'. I assume that the parameter
is being mishandled and is tuning off the tcp_nodelay property (which is by default on) even
when set to 'true'.
> amqp://guest:guest@/test?brokerlist='tcp://'
> returns serialised get-put cycles onto a single queue at the rate of 25/sec, but
> amqp://guest:guest@/test?brokerlist='tcp://'
> returns 3017/sec under otherwise identical conditions.
> I assume that the lower performance figure is consistent with tcp_nodelay not being active
in this test case.

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