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From "Shapira, Yoav" <>
Subject RE: Max possible ram usage
Date Wed, 21 Jul 2004 13:03:30 GMT
I actually don't think any stable VM implementation at this time can
address more than 2GB.  But I'm sure they're all working on it and we'll
have 16GB and more soon enough.

Don't just use all this memory because you have it, though.

Yoav Shapira
Millennium Research Informatics

>-----Original Message-----
>From: Ralph Einfeldt []
>Sent: Wednesday, July 21, 2004 9:00 AM
>To: Tomcat Users List
>Subject: RE: Max possible ram usage
>That is just java related.
>Tomcat has no upper limitations.
>The maximal memory depends on the vm implementation.
>You might try a newer version of the jdk or a jdk from a
>different vendor.
>> -----Original Message-----
>> From: Albrecht Marcus []
>> Sent: Wednesday, July 21, 2004 2:54 PM
>> To:
>> Subject: Max possible ram usage
>> My java options are
>> JAVA_OPTS="-Xms512m -Xmx3072m"
>> The tomcat won't start with this options.
>> Error occurred during initialization of VM
>> Could not reserve enough space for object heap"
>> If i lower the max value i get it running with a max of 1792
>> MB setting (JAVA_OPTS="-Xms512m -Xmx1792m").
>> Can anyone tell me the max ram size that tomcat/java can use?
>> I have't found that information anywhere on the net or mailing lists.
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