-v, --verbose
               Be more verbose (show counter open errors, etc).
    
           -z, --zero
               Zero history across display updates.
    
           -s, --sort
               Sort by key(s): pid, comm, dso, symbol, parent, srcline,
               weight, local_weight, abort, in_tx, transaction, overhead,
               sample, period. Please see description of --sort in the
               perf-report man page.
    
           --fields=
               Specify output field - multiple keys can be specified in CSV
               format. Following fields are available: overhead,
               overhead_sys, overhead_us, overhead_children, sample and
               period. Also it can contain any sort key(s).
    
                   By default, every sort keys not specified in --field will be appended
                   automatically.
    
           -n, --show-nr-samples
               Show a column with the number of samples.
    
           --show-total-period
               Show a column with the sum of periods.
    
           --dsos
               Only consider symbols in these dsos. This option will affect
               the percentage of the overhead column. See --percentage for
               more info.
    
           --comms
               Only consider symbols in these comms. This option will affect
               the percentage of the overhead column. See --percentage for
               more info.
    
           --symbols
               Only consider these symbols. This option will affect the
               percentage of the overhead column. See --percentage for more
               info.
    
           -M, --disassembler-style=
               Set disassembler style for objdump.
    
           --addr2line=<path>
               Path to addr2line binary.
    
           --objdump=<path>
               Path to objdump binary.
    
           --prefix=PREFIX, --prefix-strip=N
               Remove first N entries from source file path names in
               executables and add PREFIX. This allows to display source
               code compiled on systems with different file system layout.
    
           --source
               Interleave source code with assembly code. Enabled by
               default, disable with --no-source.
    
           --asm-raw
               Show raw instruction encoding of assembly instructions.
    
           -g
               Enables call-graph (stack chain/backtrace) recording.
    
           --call-graph [mode,type,min[,limit],order[,key][,branch]]
               Setup and enable call-graph (stack chain/backtrace)
               recording, implies -g. See --call-graph section in
               perf-record and perf-report man pages for details.
    
           --children
               Accumulate callchain of children to parent entry so that then
               can show up in the output. The output will have a new
               "Children" column and will be sorted on the data. It requires
               -g/--call-graph option enabled. See the âoverhead
               calculationâ section for more details. Enabled by default,
               disable with --no-children.
    
           --max-stack
               Set the stack depth limit when parsing the callchain,
               anything beyond the specified depth will be ignored. This is
               a trade-off between information loss and faster processing
               especially for workloads that can have a very long callchain
               stack.
    
                   Default: /proc/sys/kernel/perf_event_max_stack when present, 127 otherwise.
    
           --ignore-callees=<regex>
               Ignore callees of the function(s) matching the given regex.
               This has the effect of collecting the callers of each such
               function into one place in the call-graph tree.
    
           --percent-limit
               Do not show entries which have an overhead under