Sorry, techno, that commit charge makes no sense to me... surely it is not so low with 47 processes running? Lessee, from TM, under Commit Charge, post the 3 figures for Total, Limit, and Peak. Just a snapshot will do, no need to average em mentally or suchlike.
Knowing that you have 1G of RAM, the Limit figure will indicate the size of your PF. [it is RAM + PF - Kernal usage]. Or just post a pic of your TM.