Dale, Matt wrote:
Hi,
Has anyone got around the maximum heap size of 2G on linux? We've got a new server with 12G of ram which was going to be used for an uber tomcat but this plan may have to be changed if we can't get more than 2G of memory used for the JVM.
Ta Matt
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You could write some native code and use the apache apr package or something similar to create shared memory or memory mapped files. Then use the object you wrap around this code and store it in your session.
This way you can have as much memory as you want stored in these objects. Pull the memory from the mapped file only as you use it to keep from expanding it all back into the jvm process memory at one time. The speed difference will probably not be noticeable if you have a good search algorithm setup.
That or you could tie your session information to a database and do the same thing you would do with the mapped memory. The session would simply hold the id for the db session table. Though this may be a bit slower.
Don't know if that would be possible for you or not.
Wade
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