Lines Matching +full:trade +full:- +full:off
1 perf-top(1)
5 ----
6 perf-top - System profiling tool.
9 --------
11 'perf top' [-e <EVENT> | --event=EVENT] [<options>]
14 -----------
19 -------
20 -a::
21 --all-cpus::
22 System-wide collection. (default)
24 -c <count>::
25 --count=<count>::
28 -C <cpu-list>::
29 --cpu=<cpu>::
31 comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2.
34 -d <seconds>::
35 --delay=<seconds>::
38 -e <event>::
39 --event=<event>::
46 --filter=<filter>::
47 Event filter. This option should follow an event selector (-e). For
48 syntax see linkperf:perf-record[1].
50 -E <entries>::
51 --entries=<entries>::
54 -f <count>::
55 --count-filter=<count>::
58 --group-sort-idx::
63 -F <freq>::
64 --freq=<freq>::
69 -i::
70 --inherit::
73 -k <path>::
74 --vmlinux=<path>::
77 --ignore-vmlinux::
80 --kallsyms=<file>::
83 -m <pages>::
84 --mmap-pages=<pages>::
86 specification in bytes with appended unit character - B/K/M/G.
87 The size is rounded up to the nearest power-of-two page value.
89 -p <pid>::
90 --pid=<pid>::
93 -t <tid>::
94 --tid=<tid>::
97 -u::
98 --uid=::
101 -r <priority>::
102 --realtime=<priority>::
105 --sym-annotate=<symbol>::
108 -K::
109 --hide_kernel_symbols::
112 -U::
113 --hide_user_symbols::
116 --demangle-kernel::
119 -D::
120 --dump-symtab::
123 -v::
124 --verbose::
127 -z::
128 --zero::
131 -s::
132 --sort::
135 Please see description of --sort in the perf-report man page.
137 --fields=::
138 Specify output field - multiple keys can be specified in CSV format.
143 By default, every sort keys not specified in --field will be appended
146 -n::
147 --show-nr-samples::
150 --show-total-period::
153 --dsos::
155 percentage of the overhead column. See --percentage for more info.
157 --comms::
159 percentage of the overhead column. See --percentage for more info.
161 --symbols::
163 percentage of the overhead column. See --percentage for more info.
165 -M::
166 --disassembler-style=:: Set disassembler style for objdump.
168 --addr2line=<path>::
171 --objdump=<path>::
174 --prefix=PREFIX::
175 --prefix-strip=N::
180 --source::
182 disable with --no-source.
184 --asm-raw::
187 -g::
188 Enables call-graph (stack chain/backtrace) recording.
190 --call-graph [mode,type,min[,limit],order[,key][,branch]]::
191 Setup and enable call-graph (stack chain/backtrace) recording,
192 implies -g. See `--call-graph` section in perf-record and
193 perf-report man pages for details.
195 --children::
198 and will be sorted on the data. It requires -g/--call-graph option
200 Enabled by default, disable with --no-children.
202 --max-stack::
204 beyond the specified depth will be ignored. This is a trade-off
210 --ignore-callees=<regex>::
213 function into one place in the call-graph tree.
215 --percent-limit::
219 --percentage::
221 Filters can be applied by --comms, --dsos and/or --symbols options and
228 -w::
229 --column-widths=<width[,width...]>::
233 --proc-map-timeout::
234 When processing pre-existing threads /proc/XXX/mmap, it may take
240 -b::
241 --branch-any::
243 This is a shortcut for --branch-filter any. See --branch-filter for more infos.
245 -j::
246 --branch-filter::
258 The various filters must be specified as a comma separated list: --branch-filter any_ret,u,k
261 --branch-history::
265 --raw-trace::
268 -H::
269 --hierarchy::
271 samples based on the criteria and then sub-divide it using the lower
276 perf report -s dso,sym
288 perf report -s dso,sym --hierarchy
301 --overwrite::
311 --force::
314 --num-thread-synthesize::
318 --namespaces::
322 -G name::
323 --cgroup name::
325 in per-cpu mode. The cgroup filesystem must be mounted. All threads belonging to
329 an empty cgroup (monitor all the time) using, e.g., -G foo,,bar. Cgroups must have
332 use '-e e1 -e e2 -G foo,foo' or just use '-e e1 -e e2 -G foo'.
334 --all-cgroups::
338 --switch-on EVENT_NAME::
345 perf probe -L icmp_rcv
355 perf top -e cycles,probe:icmp_rcv --switch-on=probe:icmp_rcv
358 will appear, the first for cycles and the second for the switch-on event.
360 perf top -e '{cycles,probe:icmp_rcv}' --switch-on=probe:icmp_rcv
364 examples replacing probe:icmp_rcv with the just-after-init probe.
366 --switch-off EVENT_NAME::
369 --show-on-off-events::
370 Show the --switch-on/off events too. This has no effect in 'perf top' now
371 but probably we'll make the default not to show the switch-on/off events
372 on the --group mode and if there is only one event besides the off/on ones,
376 --stitch-lbr::
378 callgraph. The option must be used with --call-graph lbr recording.
387 --pfm-events events::
389 including support for event filters. For example '--pfm-events
392 events cannot be mixed together. The latter must be used with the -e
393 option. The -e option and this one can be mixed and matched. Events
398 --------------------------
435 include::callchain-overhead-calculation.txt[]
438 --------
439 linkperf:perf-stat[1], linkperf:perf-list[1], linkperf:perf-report[1]