I'm not quite sure what you're asking, but I've been running JSF apps under Tomcat in production for 18+ months.
However, 512MB is pretty cramped for a production J2EE server, even one as trim as Tomcat. I'd estimate that a modern-day OS+JVM alone would run you over 200MB all by themselves - especially if you're talking an OS with a GUI desktop. Then add about another 100MB for the resident Tomcat server, and there's not much left for the app.
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Joined: Jun 23, 2005
Thanks! I am looking for an option to study JSF myself. No prduction server like that. I am using Netbeans and glassfish now.