[Mono-devel-list] Issue to allocate more than 1Gb of memory with mono

[Zoltan Varga]

                                    Hi,

  This is now tracked as:

http://bugzilla.ximian.com/show_bug.cgi?id=73882

              Zoltan

On Thu, 17 Mar 2005 16:55:35 +0100 (MET), Joannes Vermorel
<vermorel at clipper.ens.fr> wrote:
> I am running mono on a bi-AMD64 machine with 8Gb of memory under linux
> redhat (64bit OS). I do not succeed in allocating more than 1Gb of memory
> with mono (see my little program here below).
> 
> Can someone help me about this issue. I have several tasks that requires
> to handle more than 1Gb of memory.
> 
> Thanks,
> Joannès
> 
> ----------------------------------------
> $ mono --version
> Mono JIT compiler version 1.1.3, (C) 2002-2004 Novell, Inc and
> Contributors. www.go-mono.com
>         TLS:           __thread
>         GC:            Included Boehm (with typed GC)
>         SIGSEGV      : normal
>         Globalization: none
> 
> ----------------------------------------
> $ mono MemoryChecker.exe
> Pointer size(in bytes): 8
> Max Mb block allocated: 1039
> System.OutOfMemoryException: Out of memory in <0x67f4d03b> (wrapper
> managed-to-native) System.Object:__icall_wrapper_mono_array_new_specific
> (intptr,int) in <0x0000f> (wrapper managed-to-native)
> System.Object:__icall_wrapper_mono_array_new_specific (intptr,int) in
> <0x000c3> MemoryChecker.MemoryChecker:Main (string[])
> 
> ----------------------------------------
> class MemoryChecker
> {
>         public const int MB = 1000000;
> 
>         [STAThread]
>         static void Main(string[] args)
>         {
>                 Console.WriteLine("Pointer size(in bytes): {0}",
> IntPtr.Size);
> 
>                 byte[][] bigArray = new byte[10000][];
> 
>                 int index = 0;
>                 while(true)
>                 {
>                         try
>                         {
>                                 bigArray[index++] = new byte[MB];
>                         }
>                         catch(Exception e)
>                         {
>                                 Console.WriteLine("Max Mb block allocated:
> {0}", index);
>                                 Console.WriteLine(e);
>                                 break;
>                         }
> 
>                 }
>         }
> }
> 
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