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
 54--symfs=<directory>::
 55        Look for files with symbols relative to this directory.
 56-n::
 57--proc-num::
 58        Print task info for at least given number of tasks.
 59-t::
 60--topology::
 61        Sort CPUs according to topology.
 62--highlight=<duration_nsecs|task_name>::
 63	Highlight tasks (using different color) that run more than given
 64	duration or tasks with given name. If number is given it's interpreted
 65	as number of nanoseconds. If non-numeric string is given it's
 66	interpreted as task name.
 67--io-skip-eagain::
 68	Don't draw EAGAIN IO events.
 69--io-min-time=<nsecs>::
 70	Draw small events as if they lasted min-time. Useful when you need
 71	to see very small and fast IO. It's possible to specify ms or us
 72	suffix to specify time in milliseconds or microseconds.
 73	Default value is 1ms.
 74--io-merge-dist=<nsecs>::
 75	Merge events that are merge-dist nanoseconds apart.
 76	Reduces number of figures on the SVG and makes it more render-friendly.
 77	It's possible to specify ms or us suffix to specify time in
 78	milliseconds or microseconds.
 79	Default value is 1us.
 80
 81RECORD OPTIONS
 82--------------
 83-P::
 84--power-only::
 85        Record only power-related events
 86-T::
 87--tasks-only::
 88        Record only tasks-related events
 89-I::
 90--io-only::
 91        Record only io-related events
 92-g::
 93--callchain::
 94        Do call-graph (stack chain/backtrace) recording
 95
 96EXAMPLES
 97--------
 98
 99$ perf timechart record git pull
100
101  [ perf record: Woken up 13 times to write data ]
102  [ perf record: Captured and wrote 4.253 MB perf.data (~185801 samples) ]
103
104$ perf timechart
105
106  Written 10.2 seconds of trace to output.svg.
107
108Record system-wide timechart:
109
110  $ perf timechart record
111
112  then generate timechart and highlight 'gcc' tasks:
113
114  $ perf timechart --highlight gcc
115
116Record system-wide IO events:
117
118  $ perf timechart record -I
119
120  then generate timechart:
121
122  $ perf timechart
123
124SEE ALSO
125--------
126linkperf: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' {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]