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   perf-kmem    ( 1 )

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Имя (Name)

perf-kmem - Tool to trace/measure kernel memory properties

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Синопсис (Synopsis)

perf kmem {record|stat} [<options>]

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Описание (Description)

There are two variants of perf kmem:

           'perf kmem record <command>' to record the kmem events
           of an arbitrary workload.

           'perf kmem stat' to report kernel memory statistics.

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Параметры (Options)

-i <file>, --input=<file>
           Select the input file (default: perf.data unless stdin is a
           fifo)

       -f, --force
           Don't do ownership validation

       -v, --verbose
           Be more verbose. (show symbol address, etc)

       --caller
           Show per-callsite statistics

       --alloc
           Show per-allocation statistics

       -s <key[,key2...]>, --sort=<key[,key2...]>
           Sort the output (default: frag,hit,bytes for slab and
           bytes,hit for page). Available sort keys are ptr, callsite,
           bytes, hit, pingpong, frag for slab and page, callsite,
           bytes, hit, order, migtype, gfp for page. This option should
           be preceded by one of the mode selection options - i.e.
           --slab, --page, --alloc and/or --caller.

       -l <num>, --line=<num>
           Print n lines only

       --raw-ip
           Print raw ip instead of symbol

       --slab
           Analyze SLAB allocator events.

       --page
           Analyze page allocator events

       --live
           Show live page stat. The perf kmem shows total allocation
           stat by default, but this option shows live (currently
           allocated) pages instead. (This option works with --page
           option only)

       --time=<start>,<stop>
           Only analyze samples within given time window:
           <start>,<stop>. Times have the format seconds.microseconds.
           If start is not given (i.e., time string is ,x.y) then
           analysis starts at the beginning of the file. If stop time is
           not given (i.e, time string is x.y,) then analysis goes to
           end of file.

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Смотри также (See also)

perf-record(1)

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