https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 09162bc32c880a791c6c0668ce0745cf7958f576 authored by Linus Torvalds on 16 November 2020, 00:44:31 UTC
Linux 5.10-rc4
Linux 5.10-rc4
Tip revision: 09162bc
perf-kmem.txt
perf-kmem(1)
============
NAME
----
perf-kmem - Tool to trace/measure kernel memory properties
SYNOPSIS
--------
[verse]
'perf kmem' {record|stat} [<options>]
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.
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.
SEE ALSO
--------
linkperf:perf-record[1]