lm-profiler(8)

NAME

/usr/sbin/lm-profiler - laptop mode profiler

SYNOPSIS

/usr/sbin/lm-profiler

DESCRIPTION

This manual page documents briefly the

/usr/sbin/lm-profiler command.
lm-profiler is a tool for profiling disk operations. It is

a part of
laptop mode tools and is useful only in relation to rest

of laptop mode
tools. It helps you to detect programs and services that

use up system
resources and that cause disk activity, and it allows

you to disable
them when laptop mode is active.

When you start lm-profiler, it will execute a "profiling

run", which
can take some time. Start lm-profiler when you are work

ing on batteries, preferably, because that will allow it to analyze the

actual situation that it is supposed to optimize. During the pro

filing run, you
can use your system normally; however, any disk activity

caused by your
actions will end up in the profiler's results. When the

profiling run
is finished, you will be presented with a list of programs

that deserve
your attention, either because they listen on a network

(which is not
usually useful when you are working offline) or because

they caused
disk activity in a disk-spindown-unfriendly pattern.

When lm-profiler
can guess an init script that belongs to a program, it

presents you
with the opportunity to disable the program when you

are working on
battery. It does this by placing a link to the init script

in /etc/laptop-mode/batt-stop. Any programs that lm-profiler cannot

find an init
script for is simply reported, so that you can stop the

program manually if you want to.

WARNING ABOUT DISABLING PROGRAMS: It may not be safe to

disable some
programs. They may be needed for proper operation of your

system. Disable services only if you know what they do and why

you don't need
them.

FILES

/etc/lm-profiler.conf

lm-profiler retrieves its profiling rules from this

file.

SEE ALSO

lm-profiler.conf(8).

laptop-mode.conf(8).

daemons.conf(8).

AUTHOR

This manual page was written by Bart Samwel

(bart@samwel.tk) and Jan
Polacek (jerome@ucw.cz) for the Debian system (but may be

used by others). Permission is granted to copy, distribute and/or

modify this
document under the terms of the GNU General Public Li

cense, Version 2
any later version published by the Free Software Founda

tion.

On Debian systems, the complete text of the GNU General

Public License
can be found in /usr/share/common-licenses/GPL.

LM

PROFILER(8)