diff --git a/compiler/aasmdata.pas b/compiler/aasmdata.pas
index bec28c5905..7e586dc356 100644
--- a/compiler/aasmdata.pas
+++ b/compiler/aasmdata.pas
@@ -155,6 +155,13 @@ implementation
       verbose,
       aasmtai;
 
+{$ifdef MEMDEBUG}
+    var
+      memasmsymbols,
+      memasmcfi,
+      memasmlists : TMemDebug;
+{$endif MEMDEBUG}
+
 
 {*****************************************************************************
                                  TAsmCFI
@@ -284,33 +291,33 @@ implementation
 
     destructor TAsmData.destroy;
       var
-{$ifdef MEMDEBUG}
-        d : tmemdebug;
-{$endif}
         hal : TAsmListType;
       begin
+        { Symbols }
 {$ifdef MEMDEBUG}
-         d:=tmemdebug.create(name+' - AsmSymbols');
+        memasmsymbols.start;
 {$endif}
         FAltSymbolList.free;
         FAsmSymbolDict.free;
 {$ifdef MEMDEBUG}
-         d.free;
+        memasmsymbols.stop;
 {$endif}
+        { CFI }
 {$ifdef MEMDEBUG}
-         d:=tmemdebug.create(name+' - AsmCFI');
+        memasmcfi.start;
 {$endif}
         FAsmCFI.free;
 {$ifdef MEMDEBUG}
-         d.free;
+        memasmcfi.stop;
 {$endif}
+        { Lists }
 {$ifdef MEMDEBUG}
-         d:=tmemdebug.create(name+' - AsmLists');
+         memasmlists.start;
 {$endif}
          for hal:=low(TAsmListType) to high(TAsmListType) do
            AsmLists[hal].free;
 {$ifdef MEMDEBUG}
-         d.free;
+         memasmlists.stop;
 {$endif}
       end;
 
@@ -403,6 +410,22 @@ implementation
         inc(FNextLabelNr[alt_addr]);
       end;
 
-begin
+initialization
+{$ifdef MEMDEBUG}
+  memasmsymbols:=TMemDebug.create('AsmSymbols');
+  memasmsymbols.stop;
+  memasmcfi:=TMemDebug.create('AsmCFI');
+  memasmcfi.stop;
+  memasmlists:=TMemDebug.create('AsmLists');
+  memasmlists.stop;
+{$endif MEMDEBUG}
   CAsmCFI:=TAsmCFI;
+
+finalization
+{$ifdef MEMDEBUG}
+  memasmsymbols.free;
+  memasmcfi.free;
+  memasmlists.free;
+{$endif MEMDEBUG}
+
 end.
diff --git a/compiler/assemble.pas b/compiler/assemble.pas
index 1a51e1cb07..ec289b0b2d 100644
--- a/compiler/assemble.pas
+++ b/compiler/assemble.pas
@@ -628,21 +628,11 @@ Implementation
 
 
    destructor TInternalAssembler.destroy;
-{$ifdef MEMDEBUG}
-      var
-        d : tmemdebug;
-{$endif}
       begin
-{$ifdef MEMDEBUG}
-        d := tmemdebug.create(name+' - agbin');
-{$endif}
         if assigned(ObjData) then
           ObjData.free;
         if assigned(ObjOutput) then
           ObjOutput.free;
-{$ifdef MEMDEBUG}
-        d.free;
-{$endif}
       end;
 
 
@@ -1361,9 +1351,6 @@ Implementation
 
     var to_do:set of TasmlistType;
         i:TasmlistType;
-{$ifdef MEMDEBUG}
-        d : tmemdebug;
-{$endif}
 
         procedure addlist(p:TAsmList);
         begin
@@ -1385,23 +1372,6 @@ Implementation
           writetreesmart
         else
           writetree;
-
-(*
-        if assigned(objectlibrary) then
-          begin
-            if objectlibrary<>current_module.librarydata then
-              internalerror(200603013);
-{$ifdef MEMDEBUG}
-            d:=tmemdebug.create(modulename^+' - librarydata');
-{$endif}
-            current_asmdata.free;
-            objectlibrary:=nil;
-            current_module.librarydata:=nil;
-{$ifdef MEMDEBUG}
-            d.free;
-{$endif}
-          end;
-*)
       end;
 
 
diff --git a/compiler/compiler.pas b/compiler/compiler.pas
index 63988f6e67..0a8a86f5ca 100644
--- a/compiler/compiler.pas
+++ b/compiler/compiler.pas
@@ -114,10 +114,7 @@ implementation
 uses
   aasmcpu;
 
-{$ifdef EXTDEBUG}
-  {$define SHOWUSEDMEM}
-{$endif}
-{$ifdef MEMDEBUG}
+{$if defined(EXTDEBUG) or defined(MEMDEBUG)}
   {$define SHOWUSEDMEM}
 {$endif}
 
diff --git a/compiler/fmodule.pas b/compiler/fmodule.pas
index 3900c06f9c..0d7acf3698 100644
--- a/compiler/fmodule.pas
+++ b/compiler/fmodule.pas
@@ -209,6 +209,10 @@ implementation
       scanner,ppu,
       procinfo;
 
+{$ifdef MEMDEBUG}
+    var
+      memsymtable : TMemDebug;
+{$endif}
 
 {*****************************************************************************
                              Global Functions
@@ -445,9 +449,6 @@ implementation
 
     destructor tmodule.Destroy;
       var
-{$ifdef MEMDEBUG}
-        d : tmemdebug;
-{$endif}
         i : longint;
         hpi : tprocinfo;
       begin
@@ -516,7 +517,7 @@ implementation
         localincludesearchpath.free;
         locallibrarysearchpath.free;
 {$ifdef MEMDEBUG}
-        d:=tmemdebug.create(modulename^+' - symtable');
+        memsymtable.start;
 {$endif}
         derefdata.free;
         deflist.free;
@@ -530,7 +531,7 @@ implementation
         if assigned(localmacrosymtable) then
           localmacrosymtable.free;
 {$ifdef MEMDEBUG}
-        d.free;
+        memsymtable.stop;
 {$endif}
         stringdispose(modulename);
         inherited Destroy;
@@ -846,4 +847,15 @@ implementation
       end;
 
 
+initialization
+{$ifdef MEMDEBUG}
+  memsymtable:=TMemDebug.create('Symtables');
+  memsymtable.stop;
+{$endif MEMDEBUG}
+
+finalization
+{$ifdef MEMDEBUG}
+  memsymtable.free;
+{$endif MEMDEBUG}
+
 end.
diff --git a/compiler/ogbase.pas b/compiler/ogbase.pas
index e146d2d8ac..d14be0b375 100644
--- a/compiler/ogbase.pas
+++ b/compiler/ogbase.pas
@@ -740,13 +740,9 @@ implementation
 
 
     destructor TObjData.destroy;
-{$ifdef MEMDEBUG}
-       var
-         d : tmemdebug;
-{$endif}
       begin
+        { Symbols }
 {$ifdef MEMDEBUG}
-        d:=tmemdebug.create(name+' - ObjData symbols');
         MemObjSymbols.Start;
 {$endif}
         ResetCachedAsmSymbols;
@@ -754,16 +750,14 @@ implementation
         FObjSymbolList.free;
 {$ifdef MEMDEBUG}
         MemObjSymbols.Stop;
-        d.free;
 {$endif}
+        { Sections }
 {$ifdef MEMDEBUG}
-        d:=tmemdebug.create(name+' - ObjData sections');
         MemObjSections.Start;
 {$endif}
         FObjSectionList.free;
 {$ifdef MEMDEBUG}
         MemObjSections.Stop;
-        d.free;
 {$endif}
         inherited destroy;
       end;
diff --git a/compiler/symtype.pas b/compiler/symtype.pas
index 5d56e90c33..3b8e874042 100644
--- a/compiler/symtype.pas
+++ b/compiler/symtype.pas
@@ -181,7 +181,6 @@ interface
 
 {$ifdef MEMDEBUG}
     var
-      memrealnames,
       memmanglednames,
       memprocpara,
       memprocparast,
@@ -949,8 +948,6 @@ implementation
 
 {$ifdef MEMDEBUG}
 initialization
-  memrealnames:=TMemDebug.create('Realnames');
-  memrealnames.stop;
   memmanglednames:=TMemDebug.create('Manglednames');
   memmanglednames.stop;
   memprocpara:=TMemDebug.create('ProcPara');
@@ -963,7 +960,6 @@ initialization
   memprocnodetree.stop;
 
 finalization
-  memrealnames.free;
   memmanglednames.free;
   memprocpara.free;
   memprocparast.free;