[Bug 568823] Re: Improved Java Memory/Performance Defaults

[Gabriel Nell]

An additional possibility is to specify the JVM using the "-server"
flag. Although Java also will auto-set this based on the machine
"class", currently it will only choose the server JVM one machines with
2GB+ of RAM and 2 cores. Interestingly, the 32bit instances offered by
EC2 (a popular choice for hosting web frontends) have 1.7GB of RAM,
which would cause the client VM to be auto-selected.

http://java.sun.com/docs/hotspot/HotSpotFAQ.html#compiler_types
http://java.sun.com/j2se/1.5.0/docs/guide/vm/server-class.html

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Improved Java Memory/Performance Defaults
https://bugs.launchpad.net/bugs/568823
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