Renuan: Thanks for taking the time.
Jack --- In [email protected], "kaibabsowats" <[EMAIL PROTECTED]> wrote: > The number was a "at least" number, so it was definetely low. > > I'll take a stab and trying to explain all the depends, but I might be > off on some of these. > > Performance hit - Flex compiling the MXML into SWF files, there is > caching mechanisms built in, dont know the extent how well the caching > works. This process is usaully CPU then Memory intensive. This is > done when in the JVM so your bottleneck here is the JVM used (IBM, > Sun, BEA Jrockit, etc... ). > > Backend Data Tier ( WebServices/Remoting etc... ) - This depends on > what you end up using, could be Java, .Net, or ColdFusion (even PHP or > Perl). Assuming you run any of these on the same machine you'll have > performance in CPU or Memory, where these bottlenecks follow a typical > application bottleneck. These service's performance is not directly > related to Flex, unless you are using Flex's sandbox policy then there > would be some overhead placed on the JVM again to handle each request. > > As for benchmarking there are software programs out there that can > replay http requests and simulate lots of people hitting your servers. > But its still hard to get good numbers unless you simulate your real > deployment environment as close as possible. > > One thing going for Flex is the idea that instead of having alot of > small requests hitting your server over a period of time, which eats > up resources, you have one medium/big hit at first with little > interaction with the server after (of course depending on if the > application is getting real-time data or not). You have a situation > where they hit it less times over a period of time thus off setting > the time server resource you give up for running Flex. > > The disclaimer is that it just depends. Depends on size of the SWF's, > complexity of MXML Flex compiling, data being transfered, interaction > of user (does the app have real time data ), etc... > > In my case I am doing online video training and my bandwidth is going > to be a bigger issue then Flex performance for the number of projected > users. > > Its really hard to say what a specific server can do without knowing > the extent of how its going to be used and the application being > built. > > Renaun > > --- In [email protected], "jwc_wensan" <[EMAIL PROTECTED]> > wrote: > > Renaun: > > > > I appreciate your input. > > > > That number seems low. What do you see is the bottleneck? Flex, > > CPU, RAM, etc.? > > > > Without going live, any suggestions on how to benchmark? > > > > Thanks, > > > > Jack > > > > > > --- In [email protected], "kaibabsowats" <[EMAIL PROTECTED]> > > wrote: > > > I won't give you definite answer as it does really depend, but > give > > > you a at least number. > > > > > > With Java the JVM has a 1.5Gb ram limitation (unless using Sun > > boxes > > > or 64 bit correct me if I am wrong). So I usually try and get > 2Gb > > of > > > ram minimum. This allows the JVM use its limit if needed and have > > > stuff left over for normal OS and Database usage. > > > > > > The number I can give is that you can definitely handle a couple > > > hundred simultaneous users on a server like that. To spec out > > > anything more you need to benchmark the server with the actual > > > application. I had a Dual 3.2Ghz Xeon 2Gb ram handle 1000-2000 > > > simultaneous users for a Java application that was Memory > > intensive. > > > > > > It is pretty safe to say if you actually have a couple hundred > > > simultaneous users you mostly likely have ten of thousand actual > > > users. Of course there is no magic number but these are given as > > is > > > and really should be benchmarked with the actual application. > > > > > > Renaun > > > > > > --- In [email protected], "jwc_wensan" <[EMAIL PROTECTED]> > > wrote: > > > > To All: > > > > > > > > Yesterday I made a post regarding trying to determine how many > > users > > > > a single server with one CPU could handle. I realize "it > > depends" > > > > and I did not define any type of application. > > > > > > > > I am trying to get some type of handle on what my costs will be > > > > regarding CPU licenses, servers, etc. > > > > > > > > So let me try again. Let's take the Flexstore as an example > > > > application. Based on this, can anyone shed some light as to > > how > > > > many users in an hour the server could adequately handle. > > > > > > > > Where will the bottleneck occur: Flex, server itself, database, > > etc. > > > > > > > > If an hour is not the right way to measure, then please offer > any > > > > measurement you feel is correct. > > > > > > > > Server Configuration: > > > > > > > > Dell Server @ 3.8 GHz with 1 GB RAM > > > > JRUN4 > > > > Win 2000 Server > > > > 1 Flex license > > > > > > > > As Dave and others recommended, I will put the database on a > > separate > > > > server. > > > > > > > > I am not trying to tie anyone's hands here, just trying to get > > some > > > > perspective. > > > > > > > > Thanks in advance, > > > > > > > > Jack -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! 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