Hi,
Here in ST02 of your screen, not only program buffer but other buffers also has high swaps (red in swap column)
Hence I suggest you to increase the parameter values to have better utilization of the buffers.
GO through the link that I gave before and also you could find enough information from google, sap
notes etc.
Also the below link give different buffers and their relevances.
http://help.sap.com/saphelp_470/helpdata/en/c4/3a6e16505211d189550000e829fbbd/content.htm
Regards,
Nikhil