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From Pier Fumagalli <p...@betaversion.org>
Subject Re: WORA Considered Evil ;-)
Date Thu, 26 Jun 2003 23:08:12 GMT
From: Adrian Sutton <adrian@intencha.com>

>> On which platforms?  And are we talking about the same thing?  Are you
>> saying that if I do
>>
>>   export CATALINA_BASE=/site1; startup.sh
>>   export CATALINA_BASE=/site2; startup.sh
>>   export CATALINA_BASE=/site3; startup.sh
>>   ...
>>   export CATALINA_BASE=/siteN; startup.sh
>>   service james start
>>
>> that the N separate sets of Tomcat processes and James are sharing
>> memory
>> images for all common class code?  Do you know when/where that was
>> introduced?
>
> The separate processes would share memory including a part of the
> actual JVM code as well as much of the Java library classes if (and I'm
> pretty sure only if) you are running on OS X.  Apple has provided the
> technology to do this back to Sun and it will likely appear in a future
> version of Java.  At one stage Apple was suggesting it would likely
> appear in Java 1.5 but it seems to have slipped from there.

IBM has the same technology, at least that's what the development manager of
their VM here in UK told me few months ago... But that's for
internal-use-only as far as I know...

    Pier




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