mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
7a4ec93885
When analyzing perf data from hosts of other architecture than one of the local host it's useful to call objdump that is part of a toolchain for that architecture. Instead of calling regular objdump, call one that user specified in command line. Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1346754750.16299.3.camel@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
177 lines
4.4 KiB
Plaintext
177 lines
4.4 KiB
Plaintext
perf-report(1)
|
|
==============
|
|
|
|
NAME
|
|
----
|
|
perf-report - Read perf.data (created by perf record) and display the profile
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'perf report' [-i <file> | --input=file]
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
This command displays the performance counter profile information recorded
|
|
via perf record.
|
|
|
|
OPTIONS
|
|
-------
|
|
-i::
|
|
--input=::
|
|
Input file name. (default: perf.data unless stdin is a fifo)
|
|
|
|
-v::
|
|
--verbose::
|
|
Be more verbose. (show symbol address, etc)
|
|
|
|
-d::
|
|
--dsos=::
|
|
Only consider symbols in these dsos. CSV that understands
|
|
file://filename entries.
|
|
-n::
|
|
--show-nr-samples::
|
|
Show the number of samples for each symbol
|
|
|
|
--showcpuutilization::
|
|
Show sample percentage for different cpu modes.
|
|
|
|
-T::
|
|
--threads::
|
|
Show per-thread event counters
|
|
-c::
|
|
--comms=::
|
|
Only consider symbols in these comms. CSV that understands
|
|
file://filename entries.
|
|
-S::
|
|
--symbols=::
|
|
Only consider these symbols. CSV that understands
|
|
file://filename entries.
|
|
|
|
--symbol-filter=::
|
|
Only show symbols that match (partially) with this filter.
|
|
|
|
-U::
|
|
--hide-unresolved::
|
|
Only display entries resolved to a symbol.
|
|
|
|
-s::
|
|
--sort=::
|
|
Sort by key(s): pid, comm, dso, symbol, parent, srcline.
|
|
|
|
-p::
|
|
--parent=<regex>::
|
|
regex filter to identify parent, see: '--sort parent'
|
|
|
|
-x::
|
|
--exclude-other::
|
|
Only display entries with parent-match.
|
|
|
|
-w::
|
|
--column-widths=<width[,width...]>::
|
|
Force each column width to the provided list, for large terminal
|
|
readability.
|
|
|
|
-t::
|
|
--field-separator=::
|
|
|
|
Use a special separator character and don't pad with spaces, replacing
|
|
all occurrences of this separator in symbol names (and other output)
|
|
with a '.' character, that thus it's the only non valid separator.
|
|
|
|
-D::
|
|
--dump-raw-trace::
|
|
Dump raw trace in ASCII.
|
|
|
|
-g [type,min[,limit],order]::
|
|
--call-graph::
|
|
Display call chains using type, min percent threshold, optional print
|
|
limit and order.
|
|
type can be either:
|
|
- flat: single column, linear exposure of call chains.
|
|
- graph: use a graph tree, displaying absolute overhead rates.
|
|
- fractal: like graph, but displays relative rates. Each branch of
|
|
the tree is considered as a new profiled object. +
|
|
|
|
order can be either:
|
|
- callee: callee based call graph.
|
|
- caller: inverted caller based call graph.
|
|
|
|
Default: fractal,0.5,callee.
|
|
|
|
-G::
|
|
--inverted::
|
|
alias for inverted caller based call graph.
|
|
|
|
--pretty=<key>::
|
|
Pretty printing style. key: normal, raw
|
|
|
|
--stdio:: Use the stdio interface.
|
|
|
|
--tui:: Use the TUI interface, that is integrated with annotate and allows
|
|
zooming into DSOs or threads, among other features. Use of --tui
|
|
requires a tty, if one is not present, as when piping to other
|
|
commands, the stdio interface is used.
|
|
|
|
--gtk:: Use the GTK2 interface.
|
|
|
|
-k::
|
|
--vmlinux=<file>::
|
|
vmlinux pathname
|
|
|
|
--kallsyms=<file>::
|
|
kallsyms pathname
|
|
|
|
-m::
|
|
--modules::
|
|
Load module symbols. WARNING: This should only be used with -k and
|
|
a LIVE kernel.
|
|
|
|
-f::
|
|
--force::
|
|
Don't complain, do it.
|
|
|
|
--symfs=<directory>::
|
|
Look for files with symbols relative to this directory.
|
|
|
|
-C::
|
|
--cpu:: Only report samples for the list of CPUs provided. Multiple CPUs can
|
|
be provided as a comma-separated list with no space: 0,1. Ranges of
|
|
CPUs are specified with -: 0-2. Default is to report samples on all
|
|
CPUs.
|
|
|
|
-M::
|
|
--disassembler-style=:: Set disassembler style for objdump.
|
|
|
|
--source::
|
|
Interleave source code with assembly code. Enabled by default,
|
|
disable with --no-source.
|
|
|
|
--asm-raw::
|
|
Show raw instruction encoding of assembly instructions.
|
|
|
|
--show-total-period:: Show a column with the sum of periods.
|
|
|
|
-I::
|
|
--show-info::
|
|
Display extended information about the perf.data file. This adds
|
|
information which may be very large and thus may clutter the display.
|
|
It currently includes: cpu and numa topology of the host system.
|
|
|
|
-b::
|
|
--branch-stack::
|
|
Use the addresses of sampled taken branches instead of the instruction
|
|
address to build the histograms. To generate meaningful output, the
|
|
perf.data file must have been obtained using perf record -b or
|
|
perf record --branch-filter xxx where xxx is a branch filter option.
|
|
perf report is able to auto-detect whether a perf.data file contains
|
|
branch stacks and it will automatically switch to the branch view mode,
|
|
unless --no-branch-stack is used.
|
|
|
|
--objdump=<path>::
|
|
Path to objdump binary.
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkperf:perf-stat[1], linkperf:perf-annotate[1]
|