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.NET Forum / .NET Framework / Compact Framework / August 2007Memory problems with Compact Framework
Hello! I'm working on an application that using a lot of memory on PocketPc. It seems that it almost uses the 32Mb of available memory. I tried to trace the behavior of physical memory and virtual memory using MemoryManagement.AvailablePhysicalMemory and MemoryManagement.AvailableVirtualMemory. At startup : AvailablePhysicalMemory : 33 076 Kb AvailableVirtualMemory : 1 728 Kb I use the application, and as I go along, these values decrease. Moreover, when AvailableVirtualMemory is close to 0 Kb it increases up to 512 Kb and decreases all the time and it produce importants lags. How works these two kind of memory on CompactFramework? Did you encounter same problem? Thanks you. Best regards. Eric. The "lag" you see is very likely garbage collection being forced by an OOM internally. The fact you have nearly no virtual memory is going to be a major problem for performance. I'd consider reworking the apps in whatever way you can to release some of that.  SignatureChris Tacke, Embedded MVP OpenNETCF Consulting Managed Code in an Embedded World www.OpenNETCF.com > Hello! > [quoted text clipped - 20 lines] > Best regards. > Eric. Thanks for your answer! We actually use OpenNetCF :) We already have problem for performance! So, I still have some questions on the use of these two kind of memory (virtual and physical) I use the GlobalMemoryStatus function ( DllImport("coredll.dll") ). Is the AvailableVirtual corresponds to the available memory which would be used by the application process? What's about Available Physical? Thanks. Best regards Eric > The "lag" you see is very likely garbage collection being forced by an OOM > internally. The fact you have nearly no virtual memory is going to be a [quoted text clipped - 35 lines] > > Best regards. > > Eric. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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