It's the other way around. Windows will take whatever it decides it needs, irrespective of anything else. Other settings need to fit around that.
So you basically need to say "whatever RAM I've got... 1GB (personally I would have maybe gone for 1.5GB) of that is lost to Windows. I can do something with the rest". So from there you can tell your JVM that it can use 3GB (or 2.5GB) safely for its heap. That said, I am hesitant to just give *all of it* over to the heap. You should tune your heap to be the right size. There *is* overhead in locating stuff in the heap, plus the bigger it is the longer GC takes, so there's a bit of a balancing act there. You should try to allocate "the right amount" not necessarily just "everything you can throw at it". You will probably want to do some profiling to see how much Perm Gen space you are best to allocate too. Although that's a bit of a dark art (and one that I have not practised for years), so someone else is best to give you guidance there. Or google google google... every man and his dog will have different opinions on what one should do. Be warned though, because the way CF deals with its class files - a CF application consists of really a lot of them compared to a standard java app - make sure to look for specifically *CF* JVM tuning guidance. Not just standard tuning for a Java app. -- Adam On 27 March 2013 13:28, Mik Muller <ad...@montaguema.net> wrote: > > So.... all I need to do is increase the heap? There's no magic "Windows, > you get 1gig, CF you get 3gig" configurator, correct? Windows will use > whatever is left over after CF stakes its claim? > > Sorry for my ignorance. I'm just a simple scripter. I don't know too much > about server memory, etc, except what I picked up along the road. > > Thanks, > > MM > > > > At 05:29 PM 3/26/2013, Russ Michaels wrote: > > >having 4GB of RAM is no good if your only going to allow CF to use 256mb > of > >it. Reserve 1GB for Windows and DNS services and whack it up to 3GB. > >Your memory usage is obviously going to be higher than before because your > >using 64bit now and were using 32bit before. This results in at least 1.5x > >more memory used, so you cannot use the same settings you had before. Have > >you taken note of how much memory CF was actually using on CF9 ? > > > >The Max heap size only applies to the heap, there is other memory usage on > >top of this, Apache itself plus permgen etc. > > > >You can use the built in server monitor to see what parts of your app are > >using what memory. > > > > > > > > > >On Tue, Mar 26, 2013 at 7:41 PM, Mik Muller <ad...@montaguema.net> wrote: > > > >> > >> Well, after restarting CF I saw the memory usage in Services shoot > >> straight up to 750mb instead of first hovering around 650mb for a while > and > >> then slowly moving up to 750mb. > >> > >> So I set the max heap size down to 256 and restarted CF. Now it's > hovering > >> around 400mb and not moving much. > >> > >> The server has 4gb of ram, btw. > >> > >> Should I add more ram to the machine? I'm only running CF10 and DNS on > >> this cloud server (DB and mail are on a separate box), which is set up > with > >> three processors. I would have thought 4gb would be enough. > >> > >> MM > >> > >> > >> At 03:24 PM 3/26/2013, Mik Muller wrote: > >> > >> >Was on 32 bit CF9 (Sorry, did I say CF8? I was on CF9 -- how did I miss > >> that?) > >> > > >> >Am on 64 bit CF10 > >> > > >> >The old server had max heap set to 1024. > >> > > >> >The new had it set to 512. I just bumped it up to 1024. > >> > > >> >MM > >> > > >> > > >> >At 02:06 PM 3/26/2013, Dave Watts wrote: > >> > > >> >>> I moved all my code from a Win2003S/CF8 box to a Win2008S/CF10 box > and > >> now am having issues where CF loads blank > >> >>> pages after a few hours of uptime. I'm noticing that the > >> coldfusion.exe service starts around 500mb of memory, and slowly > >> >>> moves up to about 780mb of memory. As it tops 700mb it begins > loading > >> blank pages which can be reloaded for intended > >> >>> content. Once it hit 770mb it loads ONLY blank pages, and the > service > >> can no longer be restarted. It must be killed by Task > >> >>> Manager. > >> >> > >> >>Were you using the 32-bit or 64-bit version of CF 8? > >> >> > >> >>Are you using the 32-bit or 64-bit version of CF 10? > >> >> > >> >>What is the maximum heap size allocated to CF 10? > >> >> > >> >>Dave Watts, CTO, Fig Leaf Software > >> >>http://www.figleaf.com/ > >> >>http://training.figleaf.com/ > >> >> > >> >>Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on > >> >>GSA Schedule, and provides the highest caliber vendor-authorized > >> >>instruction at our training centers, online, or onsite. > >> >> > >> >> > >> > >> > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:355165 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
