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PERF_3.16-TIMECHART(1) | perf Manual | PERF_3.16-TIMECHART(1) |
NAME¶
perf-timechart - Tool to visualize total system behavior during a workloadSYNOPSIS¶
DESCRIPTION¶
There are two variants of perf timechart:'perf timechart record <command>' to record the system level events of an arbitrary workload.
'perf timechart' to turn a trace into a Scalable Vector Graphics file, that can be viewed with popular SVG viewers such as 'Inkscape'.
TIMECHART OPTIONS¶
-o, --output=Select the output file (default:
output.svg)
-i, --input=
Select the input file (default: perf.data
unless stdin is a fifo)
-w, --width=
Select the width of the SVG file (default:
1000)
-P, --power-only
Only output the CPU power section of the
diagram
-T, --tasks-only
Don’t output processor state
transitions
-p, --process
Select the processes to display, by name or
PID
--symfs=<directory>
Look for files with symbols relative to this
directory.
-n, --proc-num
Print task info for at least given number of
tasks.
-t, --topology
Sort CPUs according to topology.
--highlight=<duration_nsecs|task_name>
Highlight tasks (using different color) that
run more than given duration or tasks with given name. If number is given
it’s interpreted as number of nanoseconds. If non-numeric string is
given it’s interpreted as task name.
RECORD OPTIONS¶
-P, --power-onlyRecord only power-related events
-T, --tasks-only
Record only tasks-related events
-g, --callchain
Do call-graph (stack chain/backtrace)
recording
EXAMPLES¶
$ perf timechart record git pull[ perf record: Woken up 13 times to write data ] [ perf record: Captured and wrote 4.253 MB perf.data (~185801 samples) ]
Written 10.2 seconds of trace to output.svg.
$ perf timechart record
then generate timechart and highlight 'gcc' tasks:
$ perf timechart --highlight gcc
SEE ALSO¶
perf_3.16-record(1)02/24/2016 | perf |