Provided by: uftrace_0.15.2-1build2_amd64 
NAME
uftrace-dump - Print raw tracing data in the data files
SYNOPSIS
uftrace dump [options]
DESCRIPTION
This command shows raw tracing data recorded in the data file. The dump format can be configured by ad‐
ditional options such as –chrome, –flame-graph, or –graphviz.
DUMP OPTIONS
--chrome
Show JSON style output as used by the Google Chrome tracing facility.
--flame-graph
Show FlameGraph style output viewable by modern web browsers (after processing by the FlameGraph
tool).
--graphviz
Show DOT style output used by the graphviz toolkit.
--mermaid
Show graph as mermaid flowchart diagram. It can be rendered in the browser.
--debug
Show hex dump of data as well
--sample-time=TIME
Apply sampling time when generating output for –flame-graph. By default, it tries to find a peri‐
od from 1 usec to 1 sec where it keeps the total number of samples under 1 million (in a single-
threaded program). You can override the sampling time with this option explicitly. Note that
functions which ran less than the sampling time will be removed from the output and functions ran
longer than the time will be shown as larger.
--no-args
Do not show function arguments and return value.
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 show functions which run under the time threshold. If some functions explicitly have the
`trace' trigger applied, those are always traced 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.
--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 called outside of user functions. This option is only meaningful when
used with --chrome, --flame-graph or --graphviz options.
--kernel-only
Dump kernel functions only without user functions.
--event-full
Show all (user) events outside of user functions. This option is only meaningful when used with
--chrome, --flame-graph or --graphviz options.
--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 dumps data like below:
$ uftrace record abc
$ uftrace dump
uftrace file header: magic = 4674726163652100
uftrace file header: version = 4
uftrace file header: header size = 40
uftrace file header: endian = 1 (little)
uftrace file header: class = 2 (64 bit)
uftrace file header: features = 0x63 (PLTHOOK | TASK_SESSION | SYM_REL_ADDR | MAX_STACK)
uftrace file header: info = 0x3ff
reading 23043.dat
105430.415350255 23043: [entry] __monstartup(4004d0) depth: 0
105430.415351178 23043: [exit ] __monstartup(4004d0) depth: 0
105430.415351932 23043: [entry] __cxa_atexit(4004f0) depth: 0
105430.415352687 23043: [exit ] __cxa_atexit(4004f0) depth: 0
105430.415353833 23043: [entry] main(400512) depth: 0
105430.415353992 23043: [entry] a(4006b2) depth: 1
105430.415354112 23043: [entry] b(4006a0) depth: 2
105430.415354230 23043: [entry] c(400686) depth: 3
105430.415354425 23043: [entry] getpid(4004b0) depth: 4
105430.415355035 23043: [exit ] getpid(4004b0) depth: 4
105430.415355549 23043: [exit ] c(400686) depth: 3
105430.415355761 23043: [exit ] b(4006a0) depth: 2
105430.415355943 23043: [exit ] a(4006b2) depth: 1
105430.415356109 23043: [exit ] main(400512) depth: 0
$ uftrace dump --chrome -F main
{"traceEvents":[
{"ts":105430415353,"ph":"B","pid":23043,"name":"main"},
{"ts":105430415353,"ph":"B","pid":23043,"name":"a"},
{"ts":105430415354,"ph":"B","pid":23043,"name":"b"},
{"ts":105430415354,"ph":"B","pid":23043,"name":"c"},
{"ts":105430415354,"ph":"B","pid":23043,"name":"getpid"},
{"ts":105430415355,"ph":"E","pid":23043,"name":"getpid"},
{"ts":105430415355,"ph":"E","pid":23043,"name":"c"},
{"ts":105430415355,"ph":"E","pid":23043,"name":"b"},
{"ts":105430415355,"ph":"E","pid":23043,"name":"a"},
{"ts":105430415356,"ph":"E","pid":23043,"name":"main"}
], "metadata": {
"command_line":"uftrace record abc ",
"recorded_time":"Tue May 24 19:44:54 2016"
} }
$ uftrace dump --flame-graph --sample-time 1us
main 1
main;a;b;c 1
$ uftrace dump --graphviz
\# command_line "uftrace record tests/t-abc"
digraph "/home/m/git/uftrace/tests/t-abc" {
\# Attributes
splines=ortho;
concentrate=true;
node [shape="rect",fontsize="7",style="filled"];
edge [fontsize="7"];
\# Elements
main[xlabel = "Calls : 1"]
main->a[xlabel = "Calls : 1"]
a->b[xlabel = "Calls : 1"]
b->c[xlabel = "Calls : 1"]
c->getpid[xlabel = "Calls : 1"]
}
SEE ALSO
uftrace(1), uftrace-record(1), uftrace-replay(1)
AUTHORS
Namhyung Kim <namhyung@gmail.com>.
Uftrace User Manuals Sep, 2018 UFTRACE-DUMP(1)