Provided by: uftrace_0.15.2-1build2_amd64 
NAME
uftrace-report - Print statistics and summary for trace data
SYNOPSIS
uftrace report [options]
DESCRIPTION
This command collects trace data from a given data file and prints statistics and summary information.
It shows function statistics by default, but can show task statistics with the --task option and show
differences between traces with the --diff option.
REPORT OPTIONS
-f FIELD, --output-fields=FIELD
Customize field in the output. Possible values are: total, total-avg, total-min, total-max, self,
self-avg, self-min, self-max, size, call and all. Multiple fields can be set by using comma.
Special field of `none' can be used (solely) to hide all fields and `all' can be used to show all
fields. Default is `total,self,call'. See FIELDS.
-s KEYS[,KEYS,...], --sort=KEYS[,KEYS,...]
Sort functions by given KEYS. Multiple KEYS can be given, separated by comma (,). Possible keys
are total (time), total-avg, total-min, total-max, self (time), self-avg, self-min, self-max,
size, call and func. But if either --avg-total or --avg-self is used, the possible keys can be
avg, min and max that apply to total or self time respectively.
--avg-total
Show average, min, max of each function’s total time.
--avg-self
Show average, min, max of each function’s self time.
--task Report task summary information rather than function statistics. Customize field in the output
with -f option. Possible values are: total, self, func and tid. Multiple fields can be set by
using comma. Special field of `none' can be used (solely) to hide all fields. Default is `to‐
tal,self,func,tid'. See TASK FIELDS.
--diff=DATA
Report differences between the input trace data and the given DATA.
--diff-policy=POLICY
Apply custom diff policy. Available values are: “abs”, “no-abs”, “percent”, “no-percent”, “com‐
pact” and “full”. The “abs” is to sort diff result using absolute value so positive and negative
entries can be shown together while “no-abs” will show positive entries first and then negative
ones. The “percent” is to show diff in percentage while “no-percent” is to show the values. The
“full” is to show all three columns of baseline, new data and difference while “compact” only
shows the difference. The default is “abs”, “compact” and “no-percent”.
--sort-column=IDX
When --diff is used with “full” policy, 3 columns will be shown for each total time, self time and
call count. This option selects the index of the column to be used as a sort key. Index 0 is for
original data given by the --data option, index 1 is for data given by the --diff option, and in‐
dex 2 is for (percentage) differences between the two data.
--srcline
Show source location of each function if available.
--format=TYPE
Show format style output. Currently, normal and html styles are supported.
COMMON OPTIONS
-F FUNC, --filter=FUNC
Set filter to trace selected functions and their children functions. This option can be used more
than once. See uftrace-replay(1) for an explanation of filters.
-N FUNC, --notrace=FUNC
Set filter not to trace selected functions and their children functions. This option can be used
more than once. See uftrace-replay(1) for an explanation of filters.
-C FUNC, --caller-filter=FUNC
Set filter to trace callers of selected functions only. This option can be used more than once.
See uftrace-replay(1) for an explanation of filters.
-T TRG, --trigger=TRG
Set trigger on selected functions. This option can be used more than once. See uftrace-replay(1)
for an explanation of triggers.
-D DEPTH, --depth DEPTH
Set trace limit in nesting level.
-t TIME, --time-filter=TIME
Do not account functions which run under the time threshold. If some functions explicitly have
the `trace' trigger applied, those are always accounted regardless of execution time.
-Z SIZE, --size-filter=SIZE
Do not show functions smaller than SIZE bytes.
-L LOCATION, --loc-filter=LOCATION
Set filter to trace selected source locations. This option can be used more than once.
--no-libcall
Do not show library calls.
--no-event
Do not show any events. Implies --no-sched.
--no-sched
Do not show schedule events.
--no-sched-preempt
Do not show preempt schedule events but show regular(sleeping) schedule events.
--match=TYPE
Use pattern match using TYPE. Possible types are regex and glob. Default is regex.
--with-syms=DIR
Read symbol data from the .sym files in DIR directory instead of the binary. This can be useful
to deal with stripped binaries. The file name of the main binary should be the same when saved
and used.
COMMON ANALYSIS OPTIONS
-H FUNC, --hide=FUNC
Set filter not to trace selected functions. It doesn’t affect their subtrees, but hides only the
given functions. This option can be used more than once. See uftrace-replay(1) for an explana‐
tion of filters.
--kernel-full
Show all kernel functions, including those called outside of user functions.
--kernel-only
Show kernel functions only without user functions.
--event-full
Show all (user) events outside of user functions.
--tid=TID[,TID,...]
Only print functions called by the given tasks. To see the list of tasks in the data file, you
can use uftrace report --task or uftrace info. This option can also be used more than once.
--demangle=TYPE
Use demangled C++ symbol names for filters, triggers, arguments and/or return values. Possible
values are “full”, “simple” and “no”. Default is “simple” which ignores function arguments and
template parameters.
-r RANGE, --time-range=RANGE
Only show functions executed within the time RANGE. The RANGE can be <start>~<stop> (separated by
“~”) and one of <start> and <stop> can be omitted. The <start> and <stop> are timestamp or
elapsed time if they have <time_unit> postfix, for example `100us'. The timestamp or elapsed time
can be shown with -f time or -f elapsed option respectively in uftrace replay(1).
EXAMPLE
This command shows information like the following:
$ uftrace record abc
$ uftrace report
Total time Self time Calls Function
========== ========== ========== ====================
150.829 us 150.829 us 1 __cxa_atexit
27.289 us 1.243 us 1 main
26.046 us 0.939 us 1 a
25.107 us 0.934 us 1 b
24.173 us 1.715 us 1 c
22.458 us 22.458 us 1 getpid
$ uftrace report -s call,self
Total time Self time Calls Function
========== ========== ========== ====================
150.829 us 150.829 us 1 __cxa_atexit
22.458 us 22.458 us 1 getpid
24.173 us 1.715 us 1 c
27.289 us 1.243 us 1 main
26.046 us 0.939 us 1 a
25.107 us 0.934 us 1 b
$ uftrace report --avg-self
Avg self Min self Max self Function
========== ========== ========== ====================
150.829 us 150.829 us 150.829 us __cxa_atexit
22.458 us 22.458 us 22.458 us getpid
1.715 us 1.715 us 1.715 us c
1.243 us 1.243 us 1.243 us main
0.939 us 0.939 us 0.939 us a
0.934 us 0.934 us 0.934 us b
$ uftrace report --task
Total time Self time Num funcs TID Task name
========== ========== ========== ====== ================
22.178 us 22.178 us 7 29955 t-abc
$ uftrace record --srcline abc
$ uftrace report --srcline
Total time Self time Calls Function [Source]
========== ========== ========== ====================
17.508 us 2.199 us 1 main [./tests/s-abc.c:26]
15.309 us 2.384 us 1 a [./tests/s-abc.c:11]
12.925 us 2.633 us 1 b [./tests/s-abc.c:16]
10.292 us 5.159 us 1 c [./tests/s-abc.c:21]
5.133 us 5.133 us 1 getpid
3.437 us 3.437 us 1 __monstartup
1.959 us 1.959 us 1 __cxa_atexit
To see a difference between two data:
$ uftrace record abc
$ uftrace report --diff uftrace.data.old
#
# uftrace diff
# [0] base: uftrace.data (from uftrace record abc )
# [1] diff: uftrace.data.old (from uftrace record abc )
#
Total time Self time Calls Function
========== ========== ========== ====================
-0.301 us -0.038 us +0 main
-0.263 us -0.070 us +0 a
-0.193 us -0.042 us +0 b
-0.151 us -0.090 us +0 c
-0.131 us -0.131 us +0 __cxa_atexit
-0.061 us -0.061 us +0 getpid
The above example shows difference sorted by absolute value of total time. The following changes it to
use (non-absolute) value of self time.
$ uftrace report --diff uftrace.data.old -s self --diff-policy no-abs
#
# uftrace diff
# [0] base: uftrace.data (from uftrace record abc )
# [1] diff: uftrace.data.old (from uftrace record abc )
#
Total time Self time Calls Function
========== ========== ========== ====================
-0.301 us -0.038 us +0 main
-0.193 us -0.042 us +0 b
-0.061 us -0.061 us +0 getpid
-0.263 us -0.070 us +0 a
-0.151 us -0.090 us +0 c
-0.131 us -0.131 us +0 __cxa_atexit
By using “full” policy, user can see raw data as well like below. Also it’s possible to sort by differ‐
ent column (for raw data). The example below will sort output by total time of the base data.
$ uftrace report --diff uftrace.data.old --sort-column 0 --diff-policy full,percent
#
# uftrace diff
# [0] base: uftrace.data (from uftrace record abc )
# [1] diff: uftrace.data.old (from uftrace record abc )
#
Total time (diff) Self time (diff) Nr. called (diff) Function
================================ ================================ ================================ ====================
2.812 us 2.511 us -10.70% 0.403 us 0.365 us -9.43% 1 1 +0 main
2.409 us 2.146 us -10.92% 0.342 us 0.272 us -20.47% 1 1 +0 a
2.067 us 1.874 us -9.34% 0.410 us 0.368 us -10.24% 1 1 +0 b
1.657 us 1.506 us -9.11% 0.890 us 0.800 us -10.11% 1 1 +0 c
0.920 us 0.789 us -14.24% 0.920 us 0.789 us -14.24% 1 1 +0 __cxa_atexit
0.767 us 0.706 us -7.95% 0.767 us 0.706 us -7.95% 1 1 +0 getpid
FIELDS
The uftrace allows user to customize the report output with a couple of fields. By default it uses to‐
tal, self and call fields, but you can use other fields in any order like:
$ uftrace report -f total,total-max,self-min,call
Total time Total max Self min Calls Function
========== ========== ========== ========== ====================
97.234 us 36.033 us 1.073 us 3 lib_a
50.552 us 26.690 us 2.828 us 2 lib_b
46.806 us 46.806 us 3.290 us 1 main
43.516 us 43.516 us 7.483 us 1 foo
32.010 us 20.847 us 9.684 us 2 lib_c
Each field can be used as sort key:
$ uftrace report -f total,total-max,self-min,call -s call
Total time Total max Self min Calls Function
========== ========== ========== ========== ====================
97.234 us 36.033 us 1.073 us 3 lib_a
50.552 us 26.690 us 2.828 us 2 lib_b
32.010 us 20.847 us 9.684 us 2 lib_c
43.516 us 43.516 us 7.483 us 1 foo
46.806 us 46.806 us 3.290 us 1 main
$ uftrace report -f total,total-max,self-min,total-min,call -s self-min,total-min
Total time Total max Self min Total min Calls Function
========== ========== ========== ========== ========== ====================
32.010 us 20.847 us 9.684 us 11.163 us 2 lib_c
43.516 us 43.516 us 7.483 us 43.516 us 1 foo
46.806 us 46.806 us 3.290 us 46.806 us 1 main
50.552 us 26.690 us 2.828 us 23.862 us 2 lib_b
97.234 us 36.033 us 1.073 us 27.763 us 3 lib_a
Each field can be used with –diff option:
$ uftrace report --diff uftrace.data.old -f total,total-min
#
# uftrace diff
# [0] base: uftrace.data (from uftrace record test/t-lib)
# [1] diff: uftrace.data.old (from uftrace record test/t-lib)
#
Total time Total min Function
=========== =========== ====================
+34.560 us +9.884 us lib_a
+18.086 us +8.517 us lib_b
+16.887 us +16.887 us main
+15.479 us +15.479 us foo
+10.600 us +3.127 us lib_c
$ uftrace report --diff uftrace.data.old -f total,total-min,self-avg --diff-policy full
#
# uftrace diff
# [0] base: uftrace.data (from uftrace record --srcline test/t-lib)
# [1] diff: uftrace.data.old (from uftrace record --srcline test/t-lib)
#
Total time (diff) Total min (diff) Self avg (diff) Function
=================================== =================================== =================================== ====================
14.616 us 13.796 us +0.820 us 4.146 us 3.823 us +0.323 us 0.443 us 0.459 us -0.016 us lib_a
6.529 us 5.957 us +0.572 us 6.529 us 5.957 us +0.572 us 0.436 us 0.356 us +0.080 us main
7.700 us 7.173 us +0.527 us 3.677 us 3.426 us +0.251 us 0.365 us 0.363 us +0.002 us lib_b
6.093 us 5.601 us +0.492 us 6.093 us 5.601 us +0.492 us 0.741 us 0.476 us +0.265 us foo
5.638 us 5.208 us +0.430 us 2.346 us 2.187 us +0.159 us 1.646 us 1.510 us +0.136 us lib_c
Each field has following meaning:
• total: total time of each function.
• total-avg: average of total time of each function.
• total-min: min of total time of each function.
• total-max: max of total time of each function.
• self: self time of each function.
• self-avg: average of self time of each function.
• self-min: min of self time of each function.
• self-max: max of self time of each function.
• call: called count of each function.
The default value is `total,self,call'. If given field name starts with “+”, then it’ll be appended to
the default fields. So “-f +total-avg” is as same as “-f total,self,call,total-avg”. And it also ac‐
cepts a special field name of `none' which disables the field display and shows function output only.
TASK FIELDS
• total: total time of each task.
• self: self time of each task.
• func: number of functions in the task.
• tid: task ID.
The default value is `total,self,func,tid'. See FIELDS for field usage.
SEE ALSO
uftrace(1), uftrace-record(1), uftrace-replay(1), uftrace-tui(1)
AUTHORS
Namhyung Kim <namhyung@gmail.com>.
Uftrace User Manuals Sep, 2018 UFTRACE-REPORT(1)