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authorMike Galbraith <efault@gmx.de>2009-08-04 04:24:41 -0400
committerIngo Molnar <mingo@elte.hu>2009-08-09 06:54:32 -0400
commit836179834833272f89098c6d1e1b89e8e69797c2 (patch)
tree3eef56eb565292b783400658ebfc45e9db2b2de6 /tools/perf
parent091bd2e993fcb1094a23e36157285b62bc87afdf (diff)
perf top: Update man page
perf_counter tools: update perf top manual page to reflect current implementation. Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/Documentation/perf-top.txt112
1 files changed, 99 insertions, 13 deletions
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 539d01289725..4a7d558dc309 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -3,36 +3,122 @@ perf-top(1)
3 3
4NAME 4NAME
5---- 5----
6perf-top - Run a command and profile it 6perf-top - System profiling tool.
7 7
8SYNOPSIS 8SYNOPSIS
9-------- 9--------
10[verse] 10[verse]
11'perf top' [-e <EVENT> | --event=EVENT] [-l] [-a] <command> 11'perf top' [-e <EVENT> | --event=EVENT] [<options>]
12 12
13DESCRIPTION 13DESCRIPTION
14----------- 14-----------
15This command runs a command and gathers a performance counter profile 15This command generates and displays a performance counter profile in realtime.
16from it.
17 16
18 17
19OPTIONS 18OPTIONS
20------- 19-------
21<command>...:: 20-a::
22 Any command you can specify in a shell. 21--all-cpus::
22 System-wide collection. (default)
23
24-c <count>::
25--count=<count>::
26 Event period to sample.
27
28-C <cpu>::
29--CPU=<cpu>::
30 CPU to profile.
31
32-d <seconds>::
33--delay=<seconds>::
34 Number of seconds to delay between refreshes.
23 35
24-e:: 36-e <event>::
25--event=:: 37--event=<event>::
26 Select the PMU event. Selection can be a symbolic event name 38 Select the PMU event. Selection can be a symbolic event name
27 (use 'perf list' to list all events) or a raw PMU 39 (use 'perf list' to list all events) or a raw PMU
28 event (eventsel+umask) in the form of rNNN where NNN is a 40 event (eventsel+umask) in the form of rNNN where NNN is a
29 hexadecimal event descriptor. 41 hexadecimal event descriptor.
30 42
31-a:: 43-E <entries>::
32 system-wide collection 44--entries=<entries>::
45 Display this many functions.
46
47-f <count>::
48--count-filter=<count>::
49 Only display functions with more events than this.
50
51-F <freq>::
52--freq=<freq>::
53 Profile at this frequency.
54
55-i::
56--inherit::
57 Child tasks inherit counters, only makes sens with -p option.
58
59-k <path>::
60--vmlinux=<path>::
61 Path to vmlinux. Required for annotation functionality.
62
63-m <pages>::
64--mmap-pages=<pages>::
65 Number of mmapped data pages.
66
67-p <pid>::
68--pid=<pid>::
69 Profile events on existing pid.
70
71-r <priority>::
72--realtime=<priority>::
73 Collect data with this RT SCHED_FIFO priority.
74
75-s <symbol>::
76--sym-annotate=<symbol>::
77 Annotate this symbol. Requires -k option.
78
79-v::
80--verbose::
81 Be more verbose (show counter open errors, etc).
82
83-z::
84--zero::
85 Zero history across display updates.
86
87INTERACTIVE PROMPTING KEYS
88--------------------------
89
90[d]::
91 Display refresh delay.
92
93[e]::
94 Number of entries to display.
95
96[E]::
97 Event to display when multiple counters are active.
98
99[f]::
100 Profile display filter (>= hit count).
101
102[F]::
103 Annotation display filter (>= % of total).
104
105[s]::
106 Annotate symbol.
107
108[S]::
109 Stop annotation, return to full profile display.
110
111[w]::
112 Toggle between weighted sum and individual count[E]r profile.
113
114[z]::
115 Toggle event count zeroing across display updates.
116
117[qQ]::
118 Quit.
119
120Pressing any unmapped key displays a menu, and prompts for input.
33 121
34-l::
35 scale counter values
36 122
37SEE ALSO 123SEE ALSO
38-------- 124--------