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
thread statistics with the --threads option and show differences between
traces with the --diff option.
OPTIONS¶
- --threads
- Report thread summary information rather than function statistics.
- -s KEYS[,KEYS,...],
--sort=KEYS[,KEYS,...]
- Sort functions by given KEYS. Multiple KEYS can be given, separated by
comma (,). Possible keys are total (time), self (time), call,
avg, min, max. Note that the first 3 keys should be used when
neither of --avg-total nor --avg-self is used. Likewise, the last 3
keys should be used when either of those options is used.
- --avg-total
- Show average, min, max of each function's total time.
- --avg-self
- Show average, min, max of each function's self time.
- --diff=DATA
- Report differences between the input trace data and the given DATA.
- --sort-column=IDX
- When --diff is used, 3 columns will be shown: 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
index 2 is for (percentage) differences between the two
data.
- -k, --kernel
- Show kernel functions as well as user functions. Only kernel functions
called inside user functions will be shown.
- --kernel-full
- Show all kernel functions, including those called outside of user
functions.
- -F FUNC, --filter=FUNC
- Set filter to trace selected functions only. 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 (or the functions called
underneath them). 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.
- -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.
- --tid=TID[,TID,...]
- Only print functions called by the given threads. To see the list of
threads in the data file, you can use
uftrace report --threads or uftrace info.
- -D DEPTH, --depth DEPTH
- Set trace limit in nesting level.
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 --threads
TID Run time Num funcs Start function
===== ========== ========== ====================================
21959 178.118 us 6 main
$ 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 (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
$ uftrace report --diff uftrace.data.old -s self --sort-column 2
#
# 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
================================ ================================ ================================ ====================================
0.767 us 0.706 us -7.95% 0.767 us 0.706 us -7.95% 1 1 +0 getpid
2.812 us 2.511 us -10.70% 0.403 us 0.365 us -9.43% 1 1 +0 main
1.657 us 1.506 us -9.11% 0.890 us 0.800 us -10.11% 1 1 +0 c
2.067 us 1.874 us -9.34% 0.410 us 0.368 us -10.24% 1 1 +0 b
0.920 us 0.789 us -14.24% 0.920 us 0.789 us -14.24% 1 1 +0 __cxa_atexit
2.409 us 2.146 us -10.92% 0.342 us 0.272 us -20.47% 1 1 +0 a
In the above example, the result was sorted by percentage of
difference of self times.
AUTHORS¶
Namhyung Kim <namhyung@gmail.com>.
