JRun will handle millions of concurrent users...on a system with adequate resources. It's inappropriate to ask "how many concurrent users will x app server handle". The number will be influenced by the system on which it runs (the OS, the web server, the memory, disk and CPU) as well as the application and how it's architected, configured, and deployed. Not to mention how the app server is configured and implemented. Just too many variables.
Indeed, the web server could itself be a bottleneck in keeping requests from getting to the app server even if it could handle more, or the DB server could hold up the users that the app server is trying to process. You're on a good track in wondering if the Iplanet web server connector might itself be an issue. Even the network (between the user and the server, between the web server and app server, the app server and db server, etc.) could be a bottleneck. You say that the problem is that "after some time people starts using it, it become very slow", but you don't say how many people or how slow. It's hard to help explain alternatives without more detail. If nothing else, I'd like to highly recommend (to you and everyone on the list) the relatively new book, Performance Analysis of Java Web Sites (http://www.amazon.com/exec/obidos/ASIN/0201844540/qid=1036863175/sr=11-1/re f=sr_11_1/103-3397306-5623001). It's an excellent book for understanding how to do performance analysis on web apps, including discussions load testing tools and bottleneck analysis. The book is even useful to folks outside of Java app servers (such as CF, ASP, PHP users). About 80% of the book is as useful to them as to Java developers. It's also excellent at being as useful to those new to performance analysis as it is to more experienced folks. I wrote a review for Amazon but it's not yet showing up on the site. /charlie > -----Original Message----- > From: Kannaiyan P [mailto:kan76@;hotmail.com] > Sent: Monday, November 11, 2002 5:41 PM > To: JRun-Talk > Subject: Jrun Concurrent user > > > Hello, > I have integrated my JRun with Iplanet web server 6.0 . It > works fine > after starting the both the servers. after some time people > starts using it, > it become very slow. i want to know how many concurrent users jrun will > handle. and also i want to know the plugin to iplanet web server . how to > check that i don't have any problem on the plugin side. > i have feeling that it might be on the plugin side. > > Please send the detail information about it. because I am facing lots of > problem. > > Thanks > Kannan. > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=8 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=8 Get the JRun Web Application Construction Kit - the only book written specifically for JRun developers. http://www.amazon.com/exec/obidos/ASIN/0789726009/houseoffusion
