A comparison of real time yields for European Country Debt is now available from Bloomberg. Calculated Risk has the instructions:

Click here for the graph for the Greece 10 year bond yields. Then you can add other bonds for comparison. Where it says "Add a comparison" you can enter the symbols for Germany (GDBR10:IND) and then Ireland (GIGB10YR:IND) to create this graph. Here are the symbols for Portugal (GSPT10YR:IND) and Spain (GSPG10YR:IND)