Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) perf-kmem(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) ============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) ----
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) perf-kmem - Tool to trace/measure kernel memory properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) SYNOPSIS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) --------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) [verse]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 'perf kmem' {record|stat} [<options>]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) DESCRIPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) There are two variants of perf kmem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)   'perf kmem record <command>' to record the kmem events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)   of an arbitrary workload.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)   'perf kmem stat' to report kernel memory statistics.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) -------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) -i <file>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) --input=<file>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	Select the input file (default: perf.data unless stdin is a fifo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) -f::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) --force::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	Don't do ownership validation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) -v::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) --verbose::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)         Be more verbose. (show symbol address, etc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) --caller::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	Show per-callsite statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) --alloc::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	Show per-allocation statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) -s <key[,key2...]>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) --sort=<key[,key2...]>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	Sort the output (default: 'frag,hit,bytes' for slab and 'bytes,hit'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	for page).  Available sort keys are 'ptr, callsite, bytes, hit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	pingpong, frag' for slab and 'page, callsite, bytes, hit, order,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	migtype, gfp' for page.  This option should be preceded by one of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	mode selection options - i.e. --slab, --page, --alloc and/or --caller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) -l <num>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) --line=<num>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	Print n lines only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) --raw-ip::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	Print raw ip instead of symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) --slab::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	Analyze SLAB allocator events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) --page::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	Analyze page allocator events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) --live::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	Show live page stat.  The perf kmem shows total allocation stat by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	default, but this option shows live (currently allocated) pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	instead.  (This option works with --page option only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) --time=<start>,<stop>::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	Only analyze samples within given time window: <start>,<stop>. Times
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	have the format seconds.microseconds. If start is not given (i.e., time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	string is ',x.y') then analysis starts at the beginning of the file. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	stop time is not given (i.e, time string is 'x.y,') then analysis goes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	to end of file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) SEE ALSO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) --------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) linkperf:perf-record[1]