As far as specs, you can search the sun.com site. IOW, please do your homework.
Otherwise, you will need to set up your application and "load test" it. Load testing is a discipline in itself. Load testing tools and experts are expensive. I know, as I used to do it for a living. I have tested iPlanet WS4.* and have found that the machine/network was the limiting factor even when putting an unrealistically high load for us, tens of thousands per minute with 7.5 second 4 CPU on a Ultra Enterprise 450 Server, 2.6 O/S. I would assume that with later versions of the O/S, etc. would be better w/ throughput and response. Once the request makes it to the webserver, it is priority queued, so the maximum # of users is related to how much memeory that you have on the box. Service time is a factor of how fast the web server can service the queue, so CPU speed, memory (cache), disk access pattern/speed and the network interface are limiting. In my case, the network interface was dropping incoming packets. Sometimes you can tune around these issues, I did by adjusting system parameters. After that, ran out of CPU cycles. You are also asking the question incorrectly - the questions to answer are : 1) what is the service rate , i.e. requests/<some time period> 2) what is the service time , that is how long does it take to load a given page in your application. This is the key measurement, as a web server's performance degrades along this component. If your SLA says 5 seconds, you may be able to support only a hundred, 20 seconds thousnads. If you can wait an large amount of time for a page, you can have an large number of users. So first you have to get your management/customer to commit to an SLA. Otherwise you are working in the dark. http://www.sun.com/950901/columns/adrian/adrian.html Good books: http://www.amazon.com/exec/obidos/search-handle-url/index%3Dbooks%26field-author%3DCockcroft%2C%20Adrian/102-0642860-0153756 Google "load testing" . --- Beena Patil <[EMAIL PROTECTED]> wrote: > Is there any specs provided by IPlanet for the max no. of users supported, > or is there any way to calculate the same for a specific application > > Beena > ----- Original Message ----- > From: M. E. Zawadzki <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, November 19, 2002 8:45 PM > Subject: Re: iPlanet- urgent > > > > That really depends more on your machine (memory, speed, #CPU, etc.) and > your network, as well as > > the application. > > > > > > > > --- vishwa <[EMAIL PROTECTED]> wrote: > > > Could anyone please tell me the maximum number of users supported by > iPlanet web Server 6.0. > > > Please reply soon its urgent > > > > > > thanks, > > > Vishwa Ranjan > > > > > > > > > > > > ===== > > > > Mark Zawadzki Performance Engineer/DBA/Programmer extraordinaire' > [EMAIL PROTECTED] [EMAIL PROTECTED] > > > > "Democracies die behind closed doors," - Judge Damon Keith > > > > "The people of this country, not special interest big money, should be > > the source of all political power. Government must remain the domain of > > the general citizenry, not a narrow elite." - Sen. Paul Wellstone > > > > > > > > __________________________________________________ > > Do you Yahoo!? > > Yahoo! Web Hosting - Let the expert host your site > > http://webhosting.yahoo.com > > > > > ___________________________________________________________________________ > > To unsubscribe, send email to [EMAIL PROTECTED] and include in the > body > > of the message "signoff SERVLET-INTEREST". > > > > Archives: http://archives.java.sun.com/archives/servlet-interest.html > > Resources: http://java.sun.com/products/servlet/external-resources.html > > LISTSERV Help: http://www.lsoft.com/manuals/user/user.html > > ___________________________________________________________________________ > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff SERVLET-INTEREST". > > Archives: http://archives.java.sun.com/archives/servlet-interest.html > Resources: http://java.sun.com/products/servlet/external-resources.html > LISTSERV Help: http://www.lsoft.com/manuals/user/user.html > ===== Mark Zawadzki Performance Engineer/DBA/Programmer extraordinaire’ [EMAIL PROTECTED] [EMAIL PROTECTED] "Democracies die behind closed doors," - Judge Damon Keith "The people of this country, not special interest big money, should be the source of all political power. Government must remain the domain of the general citizenry, not a narrow elite." - Sen. Paul Wellstone __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
