For now we have one setting for units: "Max size unit"
Unfortunately it's not appropriate when you want to compare processes, since some process are in kB, others in MB others in Bytes. The only solution is to put "Byte" for "Max size unit", but then there are way too much numbers.
For each column a setting which allows to choose the unit: B or kB or mB , and another setting with number of decimals. For example CPU: 0 decimal would display a number rounded up.