Tomcat on 64 bit "optimized" JVM.

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Pedro - 22 Feb 2006 20:05 GMT

Hi,

Does anyone know if the more recent Linux distributions of SuSE 10 and
latests RedHat distros when installed in 64bit platforms have already
installed JVM 1.5.
And does Tomcat starts on this latests 1.5 JVM version?
Does anyone tested the response on AMD Opteron Machines with Dual core
CPU's?
Maybe with jmeter .... a small test .. What are the result in
comparison with the same application on a 32 bit system.

I know ... maybe I want to know to much ... well, at least I give it a go.

Best regards,
Pedro

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tom fredriksen - 22 Feb 2006 22:04 GMT

> Hi,
>
> Does anyone know if the more recent Linux distributions of SuSE 10 and
> latests RedHat distros when installed in 64bit platforms have already
> installed JVM 1.5.

I think you can get it from the red hat ftp site.

There is one for the

    Linux AMD64 Platform - J2SE(TM) Development Kit 5.0 Update 6

on the sun download page though. But according to this page its does not
have hotspot yet (1.4.2)

    http://java.sun.com/j2se/1.4.2/docs/guide/vm/
        search for "64"

No mention about it for the 1.5.0 version.

/tom

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Pedro - 25 Feb 2006 19:12 GMT

Thanks a lot guys.
I have SuSE 9.3 and it does bring the rpm's for x86_64 on many many
packages.
I have already seened the typical sites ... but I still need to have some
hard data about performance.
And apart from the ususal www.spec.org there is little info out there.
(http://www.spec.org/jbb2005/results)
The cpu comparisons are great but that is simply not enough to compare
tomcat performance ...

Regards,
Pedro

>> Hi,
>>
[quoted text clipped - 17 lines]
>
> /tom

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Rob Skedgell - 23 Feb 2006 00:04 GMT

> Hi,
>
[quoted text clipped - 12 lines]
> Best regards,
> Pedro

If you need RPMs of 1.5.0, you could download
java-1.5.0-sun-1.5.0.06-1jpp.nosrc.rpm from
<http://www.jpackage.org/rpm.php?id=3366> and
jdk-1_5_0_06-linux-amd64.bin from
<http://java.sun.com/j2se/1.5.0/download.jsp>, then follow the
rebuilding instructions on the JPackage site. Seems to work OK here -
2x Opteron 244 (single cores), OpenSuSE. SuSE have used JPackage's
conventions for Java RPMs since 9.2 or 9.3.

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Rob Skedgell <rob+news@nephelococcygia.demon.co.uk>
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Tomcat on 64 bit "optimized" JVM.

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