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Subject: Re: Slow connection operations with java fork=false
From: jotpe <jotpe.osm@gmail.com>
To: user@ant.apache.org
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Nobody with same experience?


2013/12/3 jotpe <jotpe.osm@gmail.com>

> Hello list,
>
> at first my values:
> Apache Ant(TM) version 1.9.2 compiled on July 8 2013
> java.runtime.version : 1.7.0_45-b18
> java.vm.name : Java HotSpot(TM) Client VM
> os.name : Windows XP
>
>
> I've written a Java utility class, that executes some import jobs. If
> executed via commandline only OR by ant task with fork="true" parameter, it
> runs as it schould: fast and without blocking.
>
> The bottlenecks are retrieving websites
>     new URL("xyz").openConnection().getInputStream()
> and establishing a database connections
>     DriverManager.getConnection(url, props)
>
>
> With fork="true" OR direct commandline both takes ~ 50 ms +- 25 ms
> With fork="false" it takes always 9047 ms +- 13 ms
>
>
> The ant target looks normal, i think:
>
> <target name="read">
>     <java classname="ImportJob" fork="false" failonerror="true">
>         <arg value="a" />
>         <classpath>
>             <pathelement path="dist/classes"/>
>             <pathelement location="dist/postgresql-9.1-903.jdbc4.jar" />
>             <pathelement location="dist/commons-codec-1.7.jar" />
>             <pathelement location="dist/commons-io-2.4.jar" />
>             <pathelement location="dist/commons-lang3-3.1.jar" />
>             <pathelement location="dist/commons-logging-1.1.1.jar" />
>             <pathelement location="dist/httpclient-4.2.3.jar" />
>             <pathelement location="dist/httpcore-4.2.2.jar" />
>             <pathelement location="dist/utils-io-0.0.2.jar" />
>             <pathelement location="dist/gson-2.2.2.jar" />
>         </classpath>
>     </java>
> </target>
>
>
> Is there somewhere an internal timeout which is reached after 9 seconds
> without throwing an exception? Does anyone know this problem, is it a bug?
>
> Best Regards Johannes
>

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