mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 03:33:59 +08:00
8361798348
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>
126 lines
2.2 KiB
Plaintext
126 lines
2.2 KiB
Plaintext
perf-top(1)
|
|
===========
|
|
|
|
NAME
|
|
----
|
|
perf-top - System profiling tool.
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'perf top' [-e <EVENT> | --event=EVENT] [<options>]
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
This command generates and displays a performance counter profile in realtime.
|
|
|
|
|
|
OPTIONS
|
|
-------
|
|
-a::
|
|
--all-cpus::
|
|
System-wide collection. (default)
|
|
|
|
-c <count>::
|
|
--count=<count>::
|
|
Event period to sample.
|
|
|
|
-C <cpu>::
|
|
--CPU=<cpu>::
|
|
CPU to profile.
|
|
|
|
-d <seconds>::
|
|
--delay=<seconds>::
|
|
Number of seconds to delay between refreshes.
|
|
|
|
-e <event>::
|
|
--event=<event>::
|
|
Select the PMU event. Selection can be a symbolic event name
|
|
(use 'perf list' to list all events) or a raw PMU
|
|
event (eventsel+umask) in the form of rNNN where NNN is a
|
|
hexadecimal event descriptor.
|
|
|
|
-E <entries>::
|
|
--entries=<entries>::
|
|
Display this many functions.
|
|
|
|
-f <count>::
|
|
--count-filter=<count>::
|
|
Only display functions with more events than this.
|
|
|
|
-F <freq>::
|
|
--freq=<freq>::
|
|
Profile at this frequency.
|
|
|
|
-i::
|
|
--inherit::
|
|
Child tasks inherit counters, only makes sens with -p option.
|
|
|
|
-k <path>::
|
|
--vmlinux=<path>::
|
|
Path to vmlinux. Required for annotation functionality.
|
|
|
|
-m <pages>::
|
|
--mmap-pages=<pages>::
|
|
Number of mmapped data pages.
|
|
|
|
-p <pid>::
|
|
--pid=<pid>::
|
|
Profile events on existing pid.
|
|
|
|
-r <priority>::
|
|
--realtime=<priority>::
|
|
Collect data with this RT SCHED_FIFO priority.
|
|
|
|
-s <symbol>::
|
|
--sym-annotate=<symbol>::
|
|
Annotate this symbol. Requires -k option.
|
|
|
|
-v::
|
|
--verbose::
|
|
Be more verbose (show counter open errors, etc).
|
|
|
|
-z::
|
|
--zero::
|
|
Zero history across display updates.
|
|
|
|
INTERACTIVE PROMPTING KEYS
|
|
--------------------------
|
|
|
|
[d]::
|
|
Display refresh delay.
|
|
|
|
[e]::
|
|
Number of entries to display.
|
|
|
|
[E]::
|
|
Event to display when multiple counters are active.
|
|
|
|
[f]::
|
|
Profile display filter (>= hit count).
|
|
|
|
[F]::
|
|
Annotation display filter (>= % of total).
|
|
|
|
[s]::
|
|
Annotate symbol.
|
|
|
|
[S]::
|
|
Stop annotation, return to full profile display.
|
|
|
|
[w]::
|
|
Toggle between weighted sum and individual count[E]r profile.
|
|
|
|
[z]::
|
|
Toggle event count zeroing across display updates.
|
|
|
|
[qQ]::
|
|
Quit.
|
|
|
|
Pressing any unmapped key displays a menu, and prompts for input.
|
|
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkperf:perf-stat[1], linkperf:perf-list[1]
|