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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | 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. SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-annotate[1] |