RE: [CFCDev] Multiple Instances

[Mehdi, Agha]

Damon,   Thanks for the tips. Where do I set JVM Heap size for an instance in CFMX 7.0? What should I take into consideration when increasing heap size?   Thanks again. Agha Mehdi IDT - eBusiness Program Manager From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Damon Gentry Sent: Wednesday, September 28, 2005 2:19 PM To: CFCDev@cfczone.org Subject: Re: [CFCDev] Multiple Instances   Agha, If you run your service layer in their own JVM, you will most likely see a performance problem due to the fact that you will need to use HTTP to consume your data service layer.  In my opinion, if you used this configuration, memory would be the least of your concerns. I would expect that your data service components will not use a significant amount of memory in and of themselves.  Each application, however, may use different amounts of memory, depending upon how much data they need to work with (cache, query results, etc...).  For example, App1 may need a higher heap size than App2 because they might use the data differently.  This should be the factor you need to study in order to size and tune your JVMs correctly. I think you're on the right track to create unique JVMs for your applications, but I don't think it makes much sense to separate your entire data abstraction code as well.  From my perspective, your data and model components should be considered an integral part of the application and should be available via a mapping.  On 9/28/05, Mehdi, Agha <[EMAIL PROTECTED]> wrote: Damon,   That's my biggest worry. I thought of creating mappings for my service layer but I first wanted to see if there was a better way to run service layer in its own memory space where it doesn't share other applications resources.  Do you think it'd still be a performance issue if I bumped up the memory allocation for service layer? (BTW, how do you about increasing the memory?)   Thanks Agha Mehdi IDT - eBusiness Program Manager From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Damon Gentry Sent: Wednesday, September 28, 2005 11:51 AM To: CFCDev@cfczone.org Subject: Re: [CFCDev] Multiple Instances   Agha, My only concern would be performance.  Althought your service layer would run on the same host(s), you will be accessing them through a web service call (XML over HTTP).  I would think that this would be much less efficient than making a local call to a component on the same JVM server.  Furthermore, I don't think that you would be able to cache your service layer if it is invoked as a web service. Perhaps a better approach would be to place your service layer components into a discreet folder and add mappings to that location from your other instances.  That way, all server instances can share the same deployment of your service layer. Anybody else have any thoughts on this? Damon Gentry On 9/28/05, Mehdi, Agha <[EMAIL PROTECTED]> wrote: Hi all, I have an architectural question, which conceptually, sounds good. Server is Dual Processor, 8GB of memory, 100GB of drive space (part of a cluster of 4 servers). I want to create the following instances: Instance1:      App1 Instance2:      App2 Instance3:      Flex Instance4:      Misc. (Schedule Tasks) Instance5:      Service (Model and Data layer for all the above instances) This way we can have all four instances talk to the same service layer, which will enable us to re-use the same model across the applications. We 'd need to invoke the service layer as a web service. All servers in the cluster will have the same configuration. Please let me know if that sounds like any plan. I want to get as much feedback as possible before I get into implementing this. Thanks   Agha Mehdi IDT - eBusiness Program Manager Work: 408.284.8239 Cell  : 209.275.0482 Fax  :  408.284.2766 -- Damon Gentry [EMAIL PROTECTED] ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to cfcdev@cfczone.org with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). CFCDev is supported by New Atlanta, makers of BlueDragon http://www.newatlanta.com/products/bluedragon/index.cfm An archive of the CFCDev list is available at www.mail-archive..com/cfcdev@cfczone.org -- Damon Gentry [EMAIL PROTECTED] ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to cfcdev@cfczone.org with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). CFCDev is supported by New Atlanta, makers of BlueDragon http://www.newatlanta.com/products/bluedragon/index.cfm An archive of the CFCDev list is available at www.mail-archive.com/cfcdev@cfczone.org