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.
113 (i.e. --sort comm,dso,symbol)
115 If --branch-stack option is used, following sort keys are also
118 - dso_from: name of library or module branched from
119 - dso_to: name of library or module branched to
120 - symbol_from: name of function branched from
121 - symbol_to: name of function branched to
122 - srcline_from: source file and line branched from
123 - srcline_to: source file and line branched to
124 - mispredict: "N" for predicted branch, "Y" for mispredicted branch
125 - in_tx: branch in TSX transaction
126 - abort: TSX transaction abort.
127 - cycles: Cycles in basic block
130 and symbol_to, see '--branch-stack'.
140 If the --mem-mode option is used, the following sort keys are also available
141 (incompatible with --branch-stack):
144 - symbol_daddr: name of data symbol being executed on at the time of sample
145 - dso_daddr: name of library or module containing the data being executed
147 - locked: whether the bus was locked at the time of the sample
148 - tlb: type of tlb access for the data at the time of the sample
149 - mem: type of memory access for the data at the time of the sample
150 - snoop: type of snoop (if any) for the data at the time of the sample
151 - dcacheline: the cacheline the data address is on at the time of the sample
152 - phys_daddr: physical address of data being executed on at the time of sample
155 symbol_daddr, dso_daddr, snoop, tlb, locked, see '--mem-mode'.
161 - trace: pretty printed trace output in a single column
162 - trace_fields: fields in tracepoints in separate columns
163 - <field name>: optional event and field name for a specific field
175 and shows raw field value like hex numbers. The --raw-trace option
181 -F::
182 --fields=::
183 Specify output field - multiple keys can be specified in CSV format.
188 By default, every sort keys not specified in -F will be appended
192 field(s) to the default field order. For example: perf report -F +period,sample.
194 -p::
195 --parent=<regex>::
199 defaults to "\^sys_|^do_page_fault", see '--sort parent'.
201 -x::
202 --exclude-other::
203 Only display entries with parent-match.
205 -w::
206 --column-widths=<width[,width...]>::
210 -t::
211 --field-separator=::
216 -D::
217 --dump-raw-trace::
220 -g::
221 --call-graph=<print_type,threshold[,print_limit],order,sort_key[,branch],value>::
228 - flat: single column, linear exposure of call chains.
229 - graph: use a graph tree, displaying absolute overhead rates. (default)
230 - fractal: like graph, but displays relative rates. Each branch of
232 - folded: call chains are displayed in a line, separated by semicolons
233 - none: disable call chain display.
244 - callee: callee based call graph.
245 - caller: inverted caller based call graph.
246 Default is 'caller' when --children is used, otherwise 'callee'.
249 - function: compare on functions (default)
250 - address: compare on individual code addresses
251 - srcline: compare on source filename and line number
254 - branch: include last branch information in callgraph when available.
255 Usually more convenient to use --branch-history for this.
258 - percent: display overhead percent (default)
259 - period: display event period
260 - count: display event count
262 --children::
267 default, disable with --no-children.
269 --max-stack::
271 beyond the specified depth will be ignored. This is a trade-off
274 Note that when using the --itrace option the synthesized callchain size
279 -G::
280 --inverted::
283 --ignore-callees=<regex>::
286 function into one place in the call-graph tree.
288 --pretty=<key>::
291 --stdio:: Use the stdio interface.
293 --stdio-color::
296 Use '--stdio-color always' to generate color even when redirecting
297 to a pipe or file. Using just '--stdio-color' is equivalent to
300 --tui:: Use the TUI interface, that is integrated with annotate and allows
301 zooming into DSOs or threads, among other features. Use of --tui
305 --gtk:: Use the GTK2 interface.
307 -k::
308 --vmlinux=<file>::
311 --ignore-vmlinux::
314 --kallsyms=<file>::
317 -m::
318 --modules::
319 Load module symbols. WARNING: This should only be used with -k and
322 -f::
323 --force::
326 --symfs=<directory>::
329 -C::
330 --cpu:: Only report samples for the list of CPUs provided. Multiple CPUs can
331 be provided as a comma-separated list with no space: 0,1. Ranges of
332 CPUs are specified with -: 0-2. Default is to report samples on all
335 -M::
336 --disassembler-style=:: Set disassembler style for objdump.
338 --source::
340 disable with --no-source.
342 --asm-raw::
345 --show-total-period:: Show a column with the sum of periods.
347 -I::
348 --show-info::
353 -b::
354 --branch-stack::
357 perf.data file must have been obtained using perf record -b or
358 perf record --branch-filter xxx where xxx is a branch filter option.
359 perf report is able to auto-detect whether a perf.data file contains
361 unless --no-branch-stack is used.
363 --branch-history::
366 The data collection must have used -b (or -j) and -g.
368 --objdump=<path>::
371 --prefix=PREFIX::
372 --prefix-strip=N::
377 --group::
381 --group-sort-idx::
386 --demangle::
388 disable with --no-demangle.
390 --demangle-kernel::
393 --mem-mode::
394 Use the data addresses of samples in addition to instruction addresses
396 file must have been obtained using perf record -d -W and using a
397 special event -e cpu/mem-loads/p or -e cpu/mem-stores/p. See
400 --percent-limit::
405 --call-graph option for details.
407 --percentage::
409 Filters can be applied by --comms, --dsos and/or --symbols options and
416 --header::
420 --stdio output supports this feature.
422 --header-only::
423 Show only perf.data header (forces --stdio).
425 --time::
426 Only analyze samples within given time window: <start>,<stop>. Times
431 requires the argument to be quoted e.g. --time "1234.567,1234.789 1235,"
434 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'.
439 perf report --time 10%/2
443 perf report --time 0%-10%
447 perf report --time 10%/1,10%/2
451 perf report --time 0%-10%,30%-40%
453 --switch-on EVENT_NAME::
460 --switch-off EVENT_NAME::
463 --show-on-off-events::
464 Show the --switch-on/off events too. This has no effect in 'perf report' now
465 but probably we'll make the default not to show the switch-on/off events
466 on the --group mode and if there is only one event besides the off/on ones,
470 --itrace::
475 To disable decoding entirely, use --no-itrace.
477 --full-source-path::
480 --show-ref-call-graph::
484 So user can use "call-graph=no" event modifier to disable callgraph
491 --stitch-lbr::
494 perf record --call-graph lbr.
502 --socket-filter::
503 Only report the samples on the processor socket that match with this filter
505 --samples=N::
506 Save N individual samples for each histogram entry to show context in perf
509 --raw-trace::
512 --hierarchy::
515 --inline::
518 default, disable with --no-inline.
520 --mmaps::
521 Show --tasks output plus mmap information in a format similar to
525 are include 'perf record --data', for instance.
527 --ns::
530 --stats::
532 (like the one at the end of the perf report -D command)
534 --tasks::
538 --percent-type::
540 global-period, local-period, global-hits, local-hits
545 on - the samples period or the number of samples (hits).
547 --time-quantum::
551 --total-cycles::
552 When --total-cycles is specified, it supports sorting for all blocks by
556 'Sampled Cycles%' - block sampled cycles aggregation / total sampled cycles
557 'Sampled Cycles' - block sampled cycles aggregation
558 'Avg Cycles%' - block average sampled cycles / sum of total block average
560 'Avg Cycles' - block average sampled cycles
562 include::callchain-overhead-calculation.txt[]
565 --------
566 linkperf:perf-stat[1], linkperf:perf-annotate[1], linkperf:perf-record[1],
567 linkperf:perf-intel-pt[1]