Lines Matching +full:avg +full:- +full:samples
1 perf-report(1)
5 ----
6 perf-report - Read perf.data (created by perf record) and display the profile
9 --------
11 'perf report' [-i <file> | --input=file]
14 -----------
19 -------
20 -i::
21 --input=::
24 -v::
25 --verbose::
28 -q::
29 --quiet::
30 Do not show any message. (Suppress -v)
32 -n::
33 --show-nr-samples::
34 Show the number of samples for each symbol
36 --show-cpu-utilization::
39 -T::
40 --threads::
41 Show per-thread event counters. The input data file should be recorded
42 with -s option.
43 -c::
44 --comms=::
47 the overhead column. See --percentage for more info.
48 --pid=::
51 --tid=::
53 -d::
54 --dsos=::
57 the overhead column. See --percentage for more info.
58 -S::
59 --symbols=::
62 the overhead column. See --percentage for more info.
64 --symbol-filter=::
67 -U::
68 --hide-unresolved::
71 -s::
72 --sort=::
73 Sort histogram entries by given key(s) - multiple keys can be specified
80 - comm: command (name) of the task which can be read via /proc/<pid>/comm
81 - pid: command and tid of the task
82 - dso: name of library or module executed at the time of sample
83 - dso_size: size of library or module executed at the time of sample
84 - symbol: name of function executed at the time of sample
85 - symbol_size: size of function executed at the time of sample
86 - parent: name of function matched to the parent regex filter. Unmatched
88 - cpu: cpu number the task ran at the time of sample
89 - socket: processor socket number the task ran at the time of sample
90 - srcline: filename and line number executed at the time of sample. The
92 - srcfile: file name of the source file of the samples. Requires dwarf
94 - weight: Event specific weight, e.g. memory latency or transaction
96 - local_weight: Local weight version of the weight above.
97 - cgroup_id: ID derived from cgroup namespace device and inode numbers.
98 - cgroup: cgroup pathname in the cgroupfs.
99 - transaction: Transaction abort flags.
100 - overhead: Overhead percentage of sample
101 - overhead_sys: Overhead percentage of sample running in system mode
102 - overhead_us: Overhead percentage of sample running in user mode
103 - overhead_guest_sys: Overhead percentage of sample running in system mode
105 - overhead_guest_us: Overhead percentage of sample running in user mode on
107 - sample: Number of sample
108 - period: Raw number of event count of sample
109 - time: Separate the samples by time stamp with the resolution specified by
110 --time-quantum (default 100ms). Specify with overhead and before it.
111 - code_page_size: the code page size of sampled code address (ip)
112 - ins_lat: Instruction latency in core cycles. This is the global instruction
114 - local_ins_lat: Local instruction latency version
115 - p_stage_cyc: On powerpc, this presents the number of cycles spent in a
119 (i.e. --sort comm,dso,symbol)
121 If --branch-stack option is used, following sort keys are also
124 - dso_from: name of library or module branched from
125 - dso_to: name of library or module branched to
126 - symbol_from: name of function branched from
127 - symbol_to: name of function branched to
128 - srcline_from: source file and line branched from
129 - srcline_to: source file and line branched to
130 - mispredict: "N" for predicted branch, "Y" for mispredicted branch
131 - in_tx: branch in TSX transaction
132 - abort: TSX transaction abort.
133 - cycles: Cycles in basic block
136 and symbol_to, see '--branch-stack'.
146 If the --mem-mode option is used, the following sort keys are also available
147 (incompatible with --branch-stack):
150 - symbol_daddr: name of data symbol being executed on at the time of sample
151 - dso_daddr: name of library or module containing the data being executed
153 - locked: whether the bus was locked at the time of the sample
154 - tlb: type of tlb access for the data at the time of the sample
155 - mem: type of memory access for the data at the time of the sample
156 - snoop: type of snoop (if any) for the data at the time of the sample
157 - dcacheline: the cacheline the data address is on at the time of the sample
158 - phys_daddr: physical address of data being executed on at the time of sample
159 - data_page_size: the data page size of data being executed on at the time of sample
160 - blocked: reason of blocked load access for the data at the time of the sample
164 see '--mem-mode'.
170 - trace: pretty printed trace output in a single column
171 - trace_fields: fields in tracepoints in separate columns
172 - <field name>: optional event and field name for a specific field
184 and shows raw field value like hex numbers. The --raw-trace option
190 -F::
191 --fields=::
192 Specify output field - multiple keys can be specified in CSV format.
197 By default, every sort keys not specified in -F will be appended
201 field(s) to the default field order. For example: perf report -F +period,sample.
203 -p::
204 --parent=<regex>::
208 defaults to "\^sys_|^do_page_fault", see '--sort parent'.
210 -x::
211 --exclude-other::
212 Only display entries with parent-match.
214 -w::
215 --column-widths=<width[,width...]>::
219 -t::
220 --field-separator=::
225 -D::
226 --dump-raw-trace::
229 --disable-order::
232 -g::
233 --call-graph=<print_type,threshold[,print_limit],order,sort_key[,branch],value>::
240 - flat: single column, linear exposure of call chains.
241 - graph: use a graph tree, displaying absolute overhead rates. (default)
242 - fractal: like graph, but displays relative rates. Each branch of
244 - folded: call chains are displayed in a line, separated by semicolons
245 - none: disable call chain display.
256 - callee: callee based call graph.
257 - caller: inverted caller based call graph.
258 Default is 'caller' when --children is used, otherwise 'callee'.
261 - function: compare on functions (default)
262 - address: compare on individual code addresses
263 - srcline: compare on source filename and line number
266 - branch: include last branch information in callgraph when available.
267 Usually more convenient to use --branch-history for this.
270 - percent: display overhead percent (default)
271 - period: display event period
272 - count: display event count
274 --children::
279 default, disable with --no-children.
281 --max-stack::
283 beyond the specified depth will be ignored. This is a trade-off
286 Note that when using the --itrace option the synthesized callchain size
291 -G::
292 --inverted::
295 --ignore-callees=<regex>::
298 function into one place in the call-graph tree.
300 --pretty=<key>::
303 --stdio:: Use the stdio interface.
305 --stdio-color::
308 Use '--stdio-color always' to generate color even when redirecting
309 to a pipe or file. Using just '--stdio-color' is equivalent to
312 --tui:: Use the TUI interface, that is integrated with annotate and allows
313 zooming into DSOs or threads, among other features. Use of --tui
317 --gtk:: Use the GTK2 interface.
319 -k::
320 --vmlinux=<file>::
323 --ignore-vmlinux::
326 --kallsyms=<file>::
329 -m::
330 --modules::
331 Load module symbols. WARNING: This should only be used with -k and
334 -f::
335 --force::
338 --symfs=<directory>::
341 -C::
342 --cpu:: Only report samples for the list of CPUs provided. Multiple CPUs can
343 be provided as a comma-separated list with no space: 0,1. Ranges of
344 CPUs are specified with -: 0-2. Default is to report samples on all
347 -M::
348 --disassembler-style=:: Set disassembler style for objdump.
350 --source::
352 disable with --no-source.
354 --asm-raw::
357 --show-total-period:: Show a column with the sum of periods.
359 -I::
360 --show-info::
365 -b::
366 --branch-stack::
369 perf.data file must have been obtained using perf record -b or
370 perf record --branch-filter xxx where xxx is a branch filter option.
371 perf report is able to auto-detect whether a perf.data file contains
373 unless --no-branch-stack is used.
375 --branch-history::
378 The data collection must have used -b (or -j) and -g.
380 --objdump=<path>::
383 --prefix=PREFIX::
384 --prefix-strip=N::
389 --group::
393 --group-sort-idx::
398 --demangle::
400 disable with --no-demangle.
402 --demangle-kernel::
405 --mem-mode::
406 Use the data addresses of samples in addition to instruction addresses
408 file must have been obtained using perf record -d -W and using a
409 special event -e cpu/mem-loads/p or -e cpu/mem-stores/p. See
412 --percent-limit::
417 --call-graph option for details.
419 --percentage::
421 Filters can be applied by --comms, --dsos and/or --symbols options and
428 --header::
432 --stdio output supports this feature.
434 --header-only::
435 Show only perf.data header (forces --stdio).
437 --time::
438 Only analyze samples within given time window: <start>,<stop>. Times
443 requires the argument to be quoted e.g. --time "1234.567,1234.789 1235,"
446 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'.
451 perf report --time 10%/2
455 perf report --time 0%-10%
459 perf report --time 10%/1,10%/2
463 perf report --time 0%-10%,30%-40%
465 --switch-on EVENT_NAME::
472 --switch-off EVENT_NAME::
475 --show-on-off-events::
476 Show the --switch-on/off events too. This has no effect in 'perf report' now
477 but probably we'll make the default not to show the switch-on/off events
478 on the --group mode and if there is only one event besides the off/on ones,
482 --itrace::
487 To disable decoding entirely, use --no-itrace.
489 --full-source-path::
492 --show-ref-call-graph::
496 So user can use "call-graph=no" event modifier to disable callgraph
503 --stitch-lbr::
506 perf record --call-graph lbr.
514 --socket-filter::
515 Only report the samples on the processor socket that match with this filter
517 --samples=N::
518 Save N individual samples for each histogram entry to show context in perf
521 --raw-trace::
524 --hierarchy::
527 --inline::
530 default, disable with --no-inline.
532 --mmaps::
533 Show --tasks output plus mmap information in a format similar to
537 are include 'perf record --data', for instance.
539 --ns::
542 --stats::
544 (like the one at the end of the perf report -D command)
546 --tasks::
550 --percent-type::
552 global-period, local-period, global-hits, local-hits
557 on - the samples period or the number of samples (hits).
559 --time-quantum::
563 --total-cycles::
564 When --total-cycles is specified, it supports sorting for all blocks by
568 'Sampled Cycles%' - block sampled cycles aggregation / total sampled cycles
569 'Sampled Cycles' - block sampled cycles aggregation
570 'Avg Cycles%' - block average sampled cycles / sum of total block average
572 'Avg Cycles' - block average sampled cycles
574 --skip-empty::
575 Do not print 0 results in the --stat output.
577 include::callchain-overhead-calculation.txt[]
580 --------
581 linkperf:perf-stat[1], linkperf:perf-annotate[1], linkperf:perf-record[1],
582 linkperf:perf-intel-pt[1]