Displays information in columnar output about all memory zones. Using command-line switches, you can alter the formatting and amount of information displayed.
Display the space allocated, but not in use, for each memory zone. The output for each zone is displayed in the right-most column.
Produce a sorted output of the memory zones in descending order beginning with the zone that wastes the most memory.
Override the default columnar format with a row-based display that also reduces the information fields shown.
Hide the default columnar headings. This may be useful when sorting output by column.
name is a substring of one or more memory zone names. Only memory zones matching this substring are included in the output.