perf-report(1) - Linux man page
Name
perf-report - Read perf.data (created by perf record) and display the profile
Synopsis
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.
- • flat: single column, linear exposure of call chains.
- -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.
See Also
perf-stat(1), perf-annotate(1)