gDef.datasource("Init", fileName, "Init", AVERAGE);
gDef.datasource("Used", fileName, "Used", AVERAGE);
gDef.datasource("Committed", fileName, "Committed", AVERAGE);
gDef.datasource("Max", fileName, "Max", AVERAGE);
gDef.line("Init", Color.GREEN, "Init memory");
gDef.area("Max", Color.RED, "Max memory\n");
gDef.area("Committed", Color.gray, "Committed memory");
gDef.area("Used", Color.GREEN, "Used memory");
gDef.gprint("Used", MAX, "used-max = %.3f%s");