1perf-kmem(1)
 2============
 3
 4NAME
 5----
 6perf-kmem - Tool to trace/measure kernel memory(slab) properties
 7
 8SYNOPSIS
 9--------
10[verse]
11'perf kmem' {record|stat} [<options>]
12
13DESCRIPTION
14-----------
15There are two variants of perf kmem:
16
17  'perf kmem record <command>' to record the kmem events
18  of an arbitrary workload.
19
20  'perf kmem stat' to report kernel memory statistics.
21
22OPTIONS
23-------
24-i <file>::
25--input=<file>::
26	Select the input file (default: perf.data unless stdin is a fifo)
27
 
 
 
 
28--caller::
29	Show per-callsite statistics
30
31--alloc::
32	Show per-allocation statistics
33
34-s <key[,key2...]>::
35--sort=<key[,key2...]>::
36	Sort the output (default: frag,hit,bytes)
 
 
 
 
37
38-l <num>::
39--line=<num>::
40	Print n lines only
41
42--raw-ip::
43	Print raw ip instead of symbol
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
44
45SEE ALSO
46--------
47linkperf:perf-record[1]

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