Swap usage is found using the system call swapctl() by cdm probe on Solaris
CDM gathers swap information in a similar way as the Solaris utility "swap -l" does, but using pages instead of blocks.
To compare the swap information between CDM and the "swap" utility you take the blocks "swap" reports and run it through the formula:
(blocks * 512) / (1024 * 1024) = total_swap MB.
This is the same number of MB the CDM probe uses in its calculations.