Speicherstatus Abfrage - Frage

[Gehstock]

Delphi-Quellcode:

l := listview1.Items.Add;
        l.Caption := 'Hauptspeicher';
        l.SubItems.Add(FormatFloat('#,###" MB"', MS.dwTotalPhys / 1048576));
l := listview1.Items.Add;
        l.Caption := 'Verwendet';
        l.SubItems.Add(Format('%d %%', [MS.dwMemoryLoad]));
l := listview1.Items.Add;
        l.Caption := 'Frei';
        l.SubItems.Add(FormatFloat('#,###" MB"', (MS.dwAvailPhys/ 1048576)));

l := listview1.Items.Add;
        l.Caption := 'Größe Auslagerungsdatei';
        l.SubItems.Add(FormatFloat('#,###" MB"', (MS.dwTotalVirtual/ 1048576)));
l := listview1.Items.Add;
        l.Caption := 'Frei Auslagerungsdatei';
        l.SubItems.Add(FormatFloat('#,###" MB"', (MS.dwAvailVirtual/ 1048576)));

l := listview1.Items.Add;
        l.Caption := 'Größe Gesamtspeicher';
        l.SubItems.Add(FormatFloat('#,###" MB"', (MS.dwTotalPageFile/ 1048576)));
l := listview1.Items.Add;
        l.Caption := 'Frei Gesamtspeicher';
        l.SubItems.Add(FormatFloat('#,###" MB"', (MS.dwAvailPageFile/ 1048576)));
l := listview1.Items.Add;
        l.Caption := 'dwload';
        l.SubItems.Add(FormatFloat('#,###" ms"', (MS.dwLength)));

was lese ich mit den einzelnen commands eigendlich aus bin mir da n bissel unsicher bei
MS.dwLength
MS.dwTotalPageFile
MS.dwAvailPageFile