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review.evervolv.com / android_kernel_oneplus_sm8150 / 2d6cf2b51fa3492c479c6d1f86496e120b51e1d8 / . / tools / perf / Documentation / perf-kmem.txt
blob: 7c8fbbf3f61c8a9abbbca3990b1f07ac2ac968c8 [file] [log] [blame]
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]1perf-kmem(1)
Arnaldo Carvalho de Melo4778e0e2010-05-05 11:23:27 -0300[diff] [blame]2============
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]3
4NAME
5----
6perf-kmem - Tool to trace/measure kernel memory(slab) properties
7
8SYNOPSIS
9--------
10[verse]
Li Zefan90b86a92009-12-10 15:21:57 +0800[diff] [blame]11'perf kmem' {record|stat} [<options>]
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]12
13DESCRIPTION
14-----------
Li Zefan90b86a92009-12-10 15:21:57 +0800[diff] [blame]15There are two variants of perf kmem:
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]16
17 'perf kmem record <command>' to record the kmem events
18 of an arbitrary workload.
19
Li Zefan90b86a92009-12-10 15:21:57 +0800[diff] [blame]20 'perf kmem stat' to report kernel memory statistics.
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]21
22OPTIONS
23-------
24-i <file>::
25--input=<file>::
Robert Richterefad1412011-12-07 10:02:54 +0100[diff] [blame]26 Select the input file (default: perf.data unless stdin is a fifo)
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]27
Li Zefan90b86a92009-12-10 15:21:57 +0800[diff] [blame]28--caller::
29 Show per-callsite statistics
30
31--alloc::
32 Show per-allocation statistics
Li Zefanb23d5762009-11-24 13:27:11 +0800[diff] [blame]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]