- You'll probably want to buy some Hardware based HTTP load-balancer for your web traffic. Make sure it supports "sticky" sessions. You can try Apache + modjk + AJP13 if you want a cheap software solution. Jetty and Tomcat can be hooked in.
- Do you require HTTP Session replication and failover? If its ok for a user to relogin after a failover, I suggest not using JBoss clustering features at all, (Except for net boot and maybe farming). - On the performance tests I ran(ECPERF), replication had a 10% hit on performance for 2 boxes running in a cluster. You'll probably have more than 2 boxes(but not much more). - I suggest marrying the WEB and EJB layer into one JVM/process. You'll get better performance. - Next what you have to do is guess peak traffic. Multiply that number by 2 just to be safe. - Next you'll need to write a stress test program - Next you'll need to hire JBossGroup to help you out with all of this. :) - Next you'll need to purchase a high quality support contract from JBossGroup to iron out any problems you may have :) At Mercantec we had 2 dual 900mhz CPU running Linux and JBoss, 1 dual 900Mgz PIII running Oracle. We could support traffic from 10K merchants. But that's our application. How many users your app can support on a given piece of hardware is totally dependent on the type of application you're running. DON'T USE CLUSTERING UNLESS YOU HAVE TO! Bill > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of > Emerson Cargnin - SICREDI Serviços > Sent: Wednesday, October 16, 2002 11:59 AM > To: [EMAIL PROTECTED] > Subject: [JBoss-dev] [JBoss-user] capacity planning to use jboss > > > Today i got a question from my manager (i work in a bank, there will be > a web layer at the bank office and a central ejb layer) : > > "Emerson, how many boxes in the ejblayer do we need to support 800 > offices and more than 4000 simultaneous clients (from the offices). > Imagine that you have available any number of xeon dual 2mhz with 2giga > RAM connected through a gigabit lan, how many boxes of this kind do we > need?" > > I confess that i exitated a little. This is a though question, indeed. I > think that CMP and mainly clustering will not have the same gain when > you have too many nodes in the cluster, given the communication needed > among the nodes to keep the data replicated. > > Does any one have any parameter for a capacity plan for a scenario like > this? jboss group, any clue ?? > > What could be the limit beetwen number of nodes and replication overhead? > > Thanks in advance for any answer : ) > > > -- > xxxxxxxxxxxxxxxxxxxxxxxxxxxx > | Emerson Cargnin | > | Analista de Sistemas Sr. | > | Tel : (051) 3358-4959 | > | SICREDI Serviços | > | Porto Alegre - Brasil | > |xxxxxxxxxxxxxxxxxxxxxxxxxx| > > > > ------------------------------------------------------- > This sf.net email is sponsored by: viaVerio will pay you up to > $1,000 for every account that you consolidate with us. > http://ad.doubleclick.net/clk;4749864;7604308;v? > http://www.viaverio.com/consolidator/osdn.cfm > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-user > > > > > ------------------------------------------------------- > This sf.net email is sponsored by: viaVerio will pay you up to > $1,000 for every account that you consolidate with us. > http://ad.doubleclick.net/clk;4749864;7604308;v? > http://www.viaverio.com/consolidator/osdn.cfm > _______________________________________________ > Jboss-development mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-development ------------------------------------------------------- This sf.net email is sponsored by: viaVerio will pay you up to $1,000 for every account that you consolidate with us. http://ad.doubleclick.net/clk;4749864;7604308;v? http://www.viaverio.com/consolidator/osdn.cfm _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
