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ARM Profiler
-Sort Self
tells the profiler to sort the output by the time spent in each function
(excluding the time spent in its children).
-Sort Descendantstells the profiler to sort the output by the time spent in all of a
function’s children but excluding time spent in the function itself.
-Sort Calls
tells the profiler to sort the output by the number of calls to each
function in the listing.
By default, child functions are listed, but not parent functions, and the output is sorted by
cumulative time.
8.2.1
Example
armprof -parent sort.prf
8.3
Profiler output
The profiler output is split into a number of sections, each section separated by a line. Each
section gives information on a single function.
In a flat profile (ie. one with no parent or child function information) each section is just a single
line.
The following shows example sections for functions called ‘insert_sort’ and ‘strcmp’.
Name
cum%
self%
desc%
calls
-------------------------------------------------------------------main
17.69%
60.06%
1
insert_sort
77.76%
17.69%
60.06%
1
strcmp
60.06%
0.00%
243432
-------------------------------------------------------------------qs_string_compare
3.21%
0.00%
13021
shell_sort
3.46%
0.00%
14059
insert_sort
60.06%
0.00%
243432
strcmp
66.75%
66.75%
0.00%
270512
-------------------------------------------------------------------Functions listed before the current function are parents of that function and functions listed
afterwards are child functions.
The cum% column is only applicable to the current function and gives the percentage of the total
time accounted for by this function and all of its children.
The other columns have slightly different meanings depending on whether the line is a parent
function, a child function or the current function itself.
For the current function the self% column gives the percentage time spent in this function itself,
the desc% column gives the percentage time spent in the children of this function, and the
calls column gives the number of calls to this function.
Reference Manual
ARM DUI 0020D
8-3