[Mono-bugs] [Bug 73843][Wis] New - OutOfMemoryException on machine with 4 Gb RAM

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Changed by yury@serdyuk.botik.ru.

http://bugzilla.ximian.com/show_bug.cgi?id=73843

--- shadow/73843	2005-03-18 10:17:33.000000000 -0500
+++ shadow/73843.tmp.14804	2005-03-18 10:17:33.000000000 -0500
@@ -0,0 +1,99 @@
+Bug#: 73843
+Product: Mono: Class Libraries
+Version: 1.0
+OS: SLES 8
+OS Details: Linux server 2.4.25bigmem #7 SMP Wed Dec 15 10:05:05 EET 2004 i686 i686 i386 GNU/Linux
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: CORLIB
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: Yury@serdyuk.botik.ru               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: OutOfMemoryException on machine with 4 Gb RAM
+
+Description of Problem:
+
+OutOfMemoryException during array allocation 
+of size ~ 1 Gb on machine with 4 Gb RAM
+
+Steps to reproduce the problem:
+
+Test program :
+
+using System;
+public class Test1GbMemory {
+ public static void Main ( String[] args ) {
+  int N = System.Convert.ToInt32 ( args [ 0 ] );
+  double[,,] array = new double [ N, N, N ];
+  Console.WriteLine ( "Array size = " + ( N * N * N * 8 ) + "\n" +
+                      "Allocated bytes = " + GC.GetTotalMemory (false) );
+  return;
+ }
+}
+
+1. mcs Test1GbMemory.cs
+2. mono Test1GbMemory.exe
+
+Actual Results:
+
+[serdyuk@itk-104 StreamRLI]$ mono Test1GbMemory.exe 400
+Array size = 512000000
+Allocated bytes = 512098304
+[serdyuk@itk-104 StreamRLI]$ mono Test1GbMemory.exe 500
+
+Unhandled Exception: System.OutOfMemoryException: Out of memory
+in (unmanaged) 0x8080be0
+in <0x00004> (wrapper managed-to-native)
+System.Object:__icall_wrapper_ves_array_new_va_3 (intptr,intptr,intptr,intptr)
+in <0x00037> Test1GbMemory:Main (string[])
+
+Expected Results:
+
+Normal termination in the second case
+
+How often does this happen? 
+
+Always.
+
+Additional Information:
+
+Mono version :
+
+[serdyuk@itk-104 StreamRLI]$ mono -V
+Mono JIT compiler version 1.1.4, (C) 2002-2004 Novell, Inc and
+Contributors. www.go-mono.com
+        TLS:           __thread
+        GC:            Included Boehm (with typed GC)
+        SIGSEGV      : normal
+        Globalization: none
+
+System information :
+[serdyuk@itk-104 StreamRLI]$ uname -a
+Linux server 2.4.25bigmem #7 SMP Wed Dec 15 10:05:05 EET 2004 i686 i686
+i386 GNU/Linux
+
+Memory info :
+
+        total:    used:    free:  shared: buffers:  cached:
+Mem:  4234272768 2322898944 1911373824        0 128507904 1867874304
+Swap: 2097434624        0 2097434624
+MemTotal:      4135032 kB
+MemFree:       1866576 kB
+MemShared:           0 kB
+Buffers:        125496 kB
+Cached:        1824096 kB
+SwapCached:          0 kB
+Active:         506704 kB
+Inactive:      1471372 kB
+HighTotal:     3276224 kB
+HighFree:      1613452 kB
+LowTotal:       858808 kB
+LowFree:        253124 kB
+SwapTotal:     2048276 kB
+SwapFree:      2048276 kB
+meminfo (END)