Usage: DeltaResource <command line>
DeltaResource (aka Delta) is a simple uninterpreted command that measures and prints the resource usage difference incurred by the execution of the remainder of the command line. For example, the following lines were taken from the execution of delta on the command "interp 4":
% delta interp 4
&27: 4 (0x4)
Elapsed seconds: 0.016, bytes allocated: 1928, utime: 0.030, stime: 0.020
Elapsed seconds is the elapsed real time for the command in seconds.
bytes allocated is the number of bytes allocated in the heap.
utime is the user time in seconds.
stime is the system time in seconds.
By specifying the -g switch one gets additional GC statistics.
By specifying the -v switch one gets additional system statistics, where the additional fields are derived from the getrusage system call in Unix. For more detailed information, see
/usr/include/sys/resource.h