We've run some events using JS 1.4 with Tomcat 4.1.29 and Java SDK 1.4.1_05 with 400 concurrent users on a Quad CPU Dell 6650 (2.6Ghz P4, 4GB RAM) using a MS SQL 2000 database (on identical Dell 6650). Performance was quite good and probably could have scaled to 2-3 times that number of concurrent users. Biggest issues are making sure the Servlet engine is configured correctly. For Tomcat, you need to modify the JVM registry settings to use the -server and -Xmx####m (where ### is the max amount of RAM for the JVM) options. We were using 768MB of RAM for the JVM in our events. Some other scalability problems with JS 1.4 scalability, that we found are:
1) Don't use HyperSQL for anything, it is not a reliable database for production environments 2) If you load balance the portal you'll need to use the database for PSML storage 3) It doesn't support Active Directory or any of the normal corporate LDAP servers without tricks and writing code. 4) It doesn't support JAAS. We've replaced JS1.4 with the eXo Portal because we wanted JSR-168 and JAAS support. Hopefully JS2 will be completed soon so we can switch back. eXo license terms (its GPL'd) aren't very attractive (i.e. if you use any eXo specific features would must GPL your code or buy a copy of the server, an LGPL license would have been better). boyd > -----Original Message----- > From: Sherman Mohler [mailto:[EMAIL PROTECTED] > Sent: Monday, April 19, 2004 7:43 PM > To: Jetspeed Developers List > Subject: Scaleability of Jetspeed > > If I may ask, what is the largest deployment using Jetspeed > anyone knows of? Are there any "known" scaleability concerns > regarding Jetspeed, or portals in general? > > I am asking this because I ran into a uPortal enthusiast who > went on to say that portals really do not scale well past > 50,000 users. Seems to me that while portal (compound view) > patterns are certainly non-trivial, that was a pretty > broad-brush statement. Any input would be greatly > appreciated, as my organization is considering adopting > Jetspeed for some non-profit initiatives. > > Thanks! > > -- Sherman > Teacher's Treasure Trove > www.teachingsupplies.com > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
