sounds like you need to guestimate http://www.thefreedictionary.com/guestimate :)
Like you said, so many variables. I'd say if you have a total possible user count and a good idea of concurrent user count, you could guestimate fairly ok. "Our directory is becoming increasinginly concerned with the scalability of our coldfusion applications as we roll out more or more pieces, and start to discuss ways of converting legacy applications to web-based apps powered by Flex and Coldfusion." This tells me you have no idea how many apps you will have in the future, so you maybe buying more HW in the future no matter what you do now. Nathan said it straight with the three phases. Buying a little more umph then you need now could be cheaper in the long run too, rebuilding new hardware and migrating costs man hours. DK On 8/23/06, Rick Root <[EMAIL PROTECTED]> wrote: > > Tom Chiverton wrote: > > On Tuesday 22 August 2006 19:05, Snake wrote: > > > >>Load testing your apps would be a good start. > > > > > > Indeed. > > If you know your current XGhz/YGig box can support Z users with > responses > > times under 5 seconds, it's a fair bit a 2X/2Y box will support 2Z. > > It's difficult to load test an app that hasn't been built. This is a > planning question, which makes it so difficult. I don't have any idea > how you estimate scalability for an application that hasn't been built. > > I'm only asking the question in case someone comes up with a good answer > for my director. =) > > > Splitting DB and App instances onto two boxes is harder work but worth > it - to > > start with you may want two boxes the same spec as the current box, and > then > > load test each half of the app to see which needs an upgrade first. > > We already have separate boxes for the database server and web server =) > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Introducing the Fusion Authority Quarterly Update. 80 pages of hard-hitting, up-to-date ColdFusion information by your peers, delivered to your door four times a year. http://www.fusionauthority.com/quarterly Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:250803 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
