showmemuse [-a] [-m <m>] [-n number] [-v]
-a shows all the blocks in use (not just the blocks since the last showmemuse command).
-m m combines the blocks in use reports. The default value of m is 2 or the global value last given with the check command (see check Command). If the call stack at the time of allocation for two or more blocks matches m frames then these blocks are reported in a single combined report. If the -m option is given, it overrides the global value of m.
-n number shows up to number records in the report. The default is 20.-v generates verbose output. The default is to show non-verbose output.