Just to be nuts about it, what if someone wanted to have 6 instances on a 2 CPU box, would it be reasonable to have 1 simultaneous request per CPU?
On another note, I've seen where performance was significantly improved by dropping the heap size down significantly (I'm talking from 1 gig to 256 megs in a busy environment). - Calvin -----Original Message----- From: Sean Corfield [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 30, 2005 3:13 AM To: CF-Talk Subject: Re: CF7 instances and server memory On Wed, 30 Mar 2005 16:29:24 +1000, Duncan <[EMAIL PROTECTED]> wrote: > I am wondering if there are some values on how much ram and memory to > the number of instances of jrun or cf server? It depends. Sorry that's not very helpful but it's accurate. It really depends on the applications on the server and the traffic levels. For example, on the macromedia.com servers, we have the JVM heap set to 2Gb min (3Gb max) and have two instances per server (each server has 8Gb RAM). Bear in mind that whatever you store in application and/or server scope will be in every instance whereas session, request and page scope variables will be spread among the instances (assuming you're load balancing traffic?). Also the number of classes (.cfm templates, ...cfc templates and methods) will affect memory usage - and again will be in every instance. > For example if we have a w2k server with iis and jrun4, with cf7, this > machine has say 2gb ram how many cf instances with 500mb heap are we > limited to? 3 given that windows need some ram as well? How many CPUs? That also has a bearing. You want to tune CF so it handles 3-5 simultaneous requests per CPU. So if you have 2 CPUs and 3 instances you still want 6-10 simultaneous requests on that box split across three instances. There's a lot of variables. -- Sean A Corfield -- http://corfield.org/ Team Fusebox -- http://fusebox.org/ Got Gmail? -- I have 50, yes 50, invites to give away! "If you're not annoying somebody, you're not really alive." -- Margaret Atwood ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:200668 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
