I've detected that my swap calculation method is wrong, since:

 Virtual Memory = PhysicalMemory(RAM) + Extended Memory (Disk)
[download]

Therefore, i've changed the SWAP calculation method to:

  my $total_swap_mem = $v->{SizeStoredInPagingFiles};
  my $free_swap_mem = $v->{FreeSpaceInPagingFiles};
  my $used_swap_mem = $total_swap_mem - $free_swap_mem;
  my $used_swap_mem_perc = ($total_swap_mem - $free_swap_mem) / $total
+_swap_mem * 100;

  printf "Swap total:%d kb\n", $total_swap_mem;
  printf "Swap free:%d kb\n", $free_swap_mem;
  printf "Swap used:%d kb\n", $used_swap_mem;
  printf "Swap used:%.2f %%\n", $used_swap_mem_perc;
[download]

in short, i need to validade this:

MEM_USED = Win32_OperatingSystem->TotalVisibleMemorySize - Win32_Opera
+tingSystem->FreePhysicalMemory
SWAP_USED = (Win32_OperatingSystem->SizeStoredInPagingFiles - Win32_Op
+eratingSystem->FreeSpaceInPagingFiles) /  Win32_OperatingSystem->Size
+StoredInPagingFiles
[download]

tks,

gulden