1perf-timechart(1)
 2=================
 3
 4NAME
 5----
 6perf-timechart - Tool to visualize total system behavior during a workload
 7
 8SYNOPSIS
 9--------
10[verse]
11'perf timechart' {record}
12
13DESCRIPTION
14-----------
15There are two variants of perf timechart:
16
17  'perf timechart record <command>' to record the system level events
18  of an arbitrary workload.
 
 
19
20  'perf timechart' to turn a trace into a Scalable Vector Graphics file,
21  that can be viewed with popular SVG viewers such as 'Inkscape'.
 
 
22
23OPTIONS
24-------
 
 
 
 
 
 
25-o::
26--output=::
27        Select the output file (default: output.svg)
28-i::
29--input=::
30        Select the input file (default: perf.data unless stdin is a fifo)
31-w::
32--width=::
33        Select the width of the SVG file (default: 1000)
34-P::
35--power-only::
36        Only output the CPU power section of the diagram
 
 
 
37-p::
38--process::
39        Select the processes to display, by name or PID
40
 
 
41--symfs=<directory>::
42        Look for files with symbols relative to this directory.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
43
44SEE ALSO
45--------
46linkperf:perf-record[1]

  1perf-timechart(1)
  2=================
  3
  4NAME
  5----
  6perf-timechart - Tool to visualize total system behavior during a workload
  7
  8SYNOPSIS
  9--------
 10[verse]
 11'perf timechart' [<timechart options>] {record} [<record options>]
 12
 13DESCRIPTION
 14-----------
 15There are two variants of perf timechart:
 16
 17  'perf timechart record <command>' to record the system level events
 18  of an arbitrary workload. By default timechart records only scheduler
 19  and CPU events (task switches, running times, CPU power states, etc),
 20  but it's possible to record IO (disk, network) activity using -I argument.
 21
 22  'perf timechart' to turn a trace into a Scalable Vector Graphics file,
 23  that can be viewed with popular SVG viewers such as 'Inkscape'. Depending
 24  on the events in the perf.data file, timechart will contain scheduler/cpu
 25  events or IO events.
 26
 27  In IO mode, every bar has two charts: upper and lower.
 28  Upper bar shows incoming events (disk reads, ingress network packets).
 29  Lower bar shows outgoing events (disk writes, egress network packets).
 30  There are also poll bars which show how much time application spent
 31  in poll/epoll/select syscalls.
 32
 33TIMECHART OPTIONS
 34-----------------
 35-o::
 36--output=::
 37        Select the output file (default: output.svg)
 38-i::
 39--input=::
 40        Select the input file (default: perf.data unless stdin is a fifo)
 41-w::
 42--width=::
 43        Select the width of the SVG file (default: 1000)
 44-P::
 45--power-only::
 46        Only output the CPU power section of the diagram
 47-T::
 48--tasks-only::
 49        Don't output processor state transitions
 50-p::
 51--process::
 52        Select the processes to display, by name or PID
 53-f::
 54--force::
 55	Don't complain, do it.
 56--symfs=<directory>::
 57        Look for files with symbols relative to this directory.
 58-n::
 59--proc-num::
 60        Print task info for at least given number of tasks.
 61-t::
 62--topology::
 63        Sort CPUs according to topology.
 64--highlight=<duration_nsecs|task_name>::
 65	Highlight tasks (using different color) that run more than given
 66	duration or tasks with given name. If number is given it's interpreted
 67	as number of nanoseconds. If non-numeric string is given it's
 68	interpreted as task name.
 69--io-skip-eagain::
 70	Don't draw EAGAIN IO events.
 71--io-min-time=<nsecs>::
 72	Draw small events as if they lasted min-time. Useful when you need
 73	to see very small and fast IO. It's possible to specify ms or us
 74	suffix to specify time in milliseconds or microseconds.
 75	Default value is 1ms.
 76--io-merge-dist=<nsecs>::
 77	Merge events that are merge-dist nanoseconds apart.
 78	Reduces number of figures on the SVG and makes it more render-friendly.
 79	It's possible to specify ms or us suffix to specify time in
 80	milliseconds or microseconds.
 81	Default value is 1us.
 82
 83RECORD OPTIONS
 84--------------
 85-P::
 86--power-only::
 87        Record only power-related events
 88-T::
 89--tasks-only::
 90        Record only tasks-related events
 91-I::
 92--io-only::
 93        Record only io-related events
 94-g::
 95--callchain::
 96        Do call-graph (stack chain/backtrace) recording
 97
 98EXAMPLES
 99--------
100
101$ perf timechart record git pull
102
103  [ perf record: Woken up 13 times to write data ]
104  [ perf record: Captured and wrote 4.253 MB perf.data (~185801 samples) ]
105
106$ perf timechart
107
108  Written 10.2 seconds of trace to output.svg.
109
110Record system-wide timechart:
111
112  $ perf timechart record
113
114  then generate timechart and highlight 'gcc' tasks:
115
116  $ perf timechart --highlight gcc
117
118Record system-wide IO events:
119
120  $ perf timechart record -I
121
122  then generate timechart:
123
124  $ perf timechart
125
126SEE ALSO
127--------
128linkperf:perf-record[1]