This file is indexed.

/usr/sbin/lm-profiler is in laptop-mode-tools 1.68-3ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
#! /bin/sh

# This script assists you in achieving very high power savings on laptops.
# It can detect programs that perform regular, non-bursty disk operations,
# and network services that listen on external addresses. When started,
# lm-profiler will run for 10 minutes (or a configured number of minutes),
# after which it will provide a series of recommendations.
#
# It will try to find init scripts for any programs that it recommends for
# stopping, and it will ask if you want to place links to those scripts in
# /etc/laptop-mode/batt-stop, so that laptop mode tools will automatically
# stop those daemons when battery mode is detected.
#
#
# This script is a part of Laptop Mode Tools.
#
# Configuration options for this script can be found in
# /etc/laptop-mode/lm-profiler.conf.
#
# Maintainer: Bart Samwel (bart@samwel.tk)
# Adapted from initial version written by Jan Polacek (jerome@ucw.cz).


#
# Read configuration.
#

# Defaults

PROFILE_RUN_LENGTH=600
ACTIVITY_INTERVAL_MAX=150
ACTIVITY_INTERVAL_MIN=5
RECOMMEND_DEFAULT_SERVICES=1
DEFAULT_SERVICES="anacron cron atd"
DEF_IGNORE_PROGRAMS="pdflush journald flush- XFree86 acpid apmd lm-profiler dmesg syslogd awk sed grep mc bc xfs cat diff uniq vi mv sort sleep"
IGNORE_PROGRAMS="$DEF_IGNORE_PROGRAMS"
RECOMMEND_NETWORK_SERVICES=1
DEF_IGNORE_NETWORK_SERVICES="perl" # Some daemons run on perl, not very informative
IGNORE_NETWORK_SERVICES="$DEF_IGNORE_NETWORK_SERVICES"
VERBOSE_OUTPUT=0
if [ -f /etc/laptop-mode/lm-profiler.conf ] ; then
	. /etc/laptop-mode/lm-profiler.conf
fi

#
# Internal variables
#

DEBUG=0
######################################################################

if [ $DEBUG -eq 1 ]; then
	set -eux
fi

if [ "$VERBOSE_OUTPUT" -eq 1 ] ; then
	OUTPUT="/dev/stdout"
else
	OUTPUT="/dev/null"
fi

if [ ! `id -u` -eq 0 ]; then
  echo "Only root can run profiler."
  exit 0
fi

WORKDIR=`mktemp -d -t lm-profiler.XXXXXX`


start_profiling(){
	# Turn on disk access profilling
	if [ -f /proc/sys/vm/block_dump ]; then
		echo "1" > /proc/sys/vm/block_dump
	else
		echo "/proc/sys/vm/block_dump does not exist, exiting."
		exit 1
	fi
}

stop_profiling(){
	# Turn off disk access profilling
	echo "0" > /proc/sys/vm/block_dump
}

# Create a commandline for grep, checking for the presence of all
# strings in a space-separated list passed as the first parameter.
format_params(){
	for PARAM in $1 ; do
		echo -n "-e $PARAM "
	done
}

# Detect all processes that have accessed the disk since the last
# invocation of dmesg. The results are written to files called
# "write_accesses_N" and "read_accesses_N", where N is the first
# parameter of this function.
process_dmesg_diff(){
	LEFT="$WORKDIR/dmesg_prev"
	RIGHT="$WORKDIR/dmesg_next"
	dmesg > $RIGHT
	if [ -s $LEFT ] && [ -s $RIGHT ]; then
		# The following command is long and complicated. It does
		# the following things, separately for READ and WRITE
		# accesses:
		# 1. Retrieve only new lines, using diff.
		# 2. Drop the first line -- it is probably a truncated
		#    version of an earlier line.
		# 3. Parse out the name of the process.
		# 4. Filter out IGNORE_PROGRAMS.
		# 5. Write process name to output.

		diff -u $LEFT $RIGHT \
			|grep '^+' \
			|grep -o '[^[:space:]]*([0-9]*): WRITE' \
			|sed '1d' \
			|awk -v FS="(" '{print $1}' \
			|grep -v `format_params "$IGNORE_PROGRAMS"` \
			|sort \
			|uniq \
			   > $WORKDIR/write_accesses_$1

		diff -u $LEFT $RIGHT \
			|grep '^+' \
			|grep -o '[^[:space:]]*([0-9]*): READ' \
			|sed '1d' \
			|awk -v FS="(" '{print $1}' \
			|grep -v `format_params "$IGNORE_PROGRAMS"` \
			|sort \
			|uniq \
			   > $WORKDIR/read_accesses_$1

		mv $RIGHT $LEFT
		WRITE_ACCESSES_FOUND=0
		for ACCESS in $(cat $WORKDIR/write_accesses_$1) ; do
			if [ $WRITE_ACCESSES_FOUND -eq 0 ] ; then
				printf '\r                                                                            \rWrite accesses at %d/%d in lm-profiler run:' "$1" "$PROFILE_RUN_LENGTH"
				WRITE_ACCESSES_FOUND=1
			fi
			echo -n " $ACCESS"
		done
		if [ $WRITE_ACCESSES_FOUND -ne 0 ] ; then
			echo ""
		fi

		READ_ACCESSES_FOUND=0
		for ACCESS in $(cat $WORKDIR/read_accesses_$1) ; do
			if [ $READ_ACCESSES_FOUND -eq 0 ] ; then
				printf '\r                                                                            \rRead accesses at %d/%d in lm-profiler run:' "$1" "$PROFILE_RUN_LENGTH"
				READ_ACCESSES_FOUND=1
			fi
			echo -n " $ACCESS"
		done
		if [ $READ_ACCESSES_FOUND -ne 0 ] ; then
			echo ""
		fi
	else
		echo "No dmesg data found to profile, exiting."
		exit 1
	fi
}

# Attempt to find an init script for ithe process given as an argument
findinit(){
	INITDIR=
	if [ -d /etc/init.d ] ; then
		INITDIR=/etc/init.d
	elif [ -d /etc/rc.d/init.d ] ; then
		INITDIR=/etc/rc.d/init.d
	fi
	if [ "$INITDIR" != "" ] ; then
		INIT=`ls $INITDIR/ |grep ^$1$ |head -n 1`
		if [ -z "$INIT" ]; then
			INIT=`grep $1 $INITDIR/* |sed s/:.*// |head -n 1`
		else
			INIT="$INITDIR/$INIT"
		fi
		if [ ! -z "$INIT" ] && [ -x $INIT ]; then
			echo "$INIT"
		fi
	fi
}

# Look for names of running network services
profilenet(){
	netstat -anp |grep ^tcp.*LISTEN |grep -v "Program name" |awk -v FS="/" '{print $2}' |sort |uniq |\
	tr -d ['(',')','[',']']
}


#
# PROFILING RUN
#

# Disable profiling if the script gets interrupted.
trap "stop_profiling; echo; exit 10" EXIT HUP INT ABRT QUIT SEGV TERM

SECONDS_DONE=
echo "Profiling run started."
dmesg > $WORKDIR/dmesg_prev
start_profiling
echo > $WORKDIR/write_accesses_$SECONDS_DONE
echo > $WORKDIR/read_accesses_$SECONDS_DONE
SECONDS_DONE=0
while [ $SECONDS_DONE -le $PROFILE_RUN_LENGTH ] ; do
	printf '\r%d seconds elapsed, %d remaining.         \b\b\b\b\b\b\b\b\b' "$SECONDS_DONE" "$(($PROFILE_RUN_LENGTH - $SECONDS_DONE))"
	sleep 1
	SECONDS_DONE=$(($SECONDS_DONE + 1))
	process_dmesg_diff $SECONDS_DONE
done
printf '\r                                                    \r'
stop_profiling

echo "Write frequency : "; cat $WORKDIR/write_accesses_* | sed -e 's/^[ \t]*//;s/[ \t]*$//' -e '/^$/ d'  | sort | uniq -c | sort -n
echo "Read frequency : "; cat $WORKDIR/read_accesses_* | sed -e 's/^[ \t]*//;s/[ \t]*$//' -e '/^$/ d'  | sort | uniq -c | sort -n
echo;

NETPROFILE=`profilenet`
echo "Profiling run completed."

#
# OUTPUT
#
ALREADY_SEEN=
if [ "$RECOMMEND_DEFAULT_SERVICES" -ne 0 ] ; then
	for SERVICE in $DEFAULT_SERVICES ; do
		echo
		echo "Program:     \"$SERVICE\""
		echo "Reason:      standard recommendation (program may not be running)"
		INIT=`findinit $SERVICE`
		if [ "$INIT" = "" ] ; then
			echo "Init script: none"
			echo "If you want to disable this program, you should do so manually."
		else
			echo "Init script: $INIT (GUESSED)"
			echo
			echo -n "Do you want to disable this service in battery mode? [y/N]: "
			read ANSWER
			if ( echo "$ANSWER" | grep -i ^y > /dev/null ) ; then
				ln -fs $INIT /etc/laptop-mode/batt-stop/`echo $INIT | sed 's/.*\///g'`
			fi
		fi
		ALREADY_SEEN="$ALREADY_SEEN $SERVICE"
	done
fi




if [ "$RECOMMEND_NETWORK_SERVICES" -ne 0 ] ; then
	for SERVICE in $NETPROFILE ; do
		if ( echo " $IGNORE_NETWORK_SERVICES " | grep -v " $SERVICE " > /dev/null ) ; then
			echo
			echo "Program:     \"$SERVICE\""
			echo "Reason:      listens on network, may not be needed offline."
			INIT=`findinit $SERVICE`
			if [ "$INIT" = "" ] ; then
				echo "Init script: none"
				echo "If you want to disable this program, you should do so manually."
			else
				echo "Init script: $INIT (GUESSED)"
				echo
				echo -n "Do you want to disable this service in battery mode? [y/N]: "
				read ANSWER
				if ( echo "$ANSWER" | grep -i ^y > /dev/null ) ; then
					ln -fs $INIT /etc/laptop-mode/batt-stop/`echo $INIT | sed 's/.*\///g'`
				fi
			fi
			ALREADY_SEEN="$ALREADY_SEEN $SERVICE"
		fi
	done
fi

SECONDS_LEFT=$PROFILE_RUN_LENGTH
while [ $SECONDS_LEFT -gt 0 ] ; do
	for SERVICE in `cat $WORKDIR/*_accesses_$SECONDS_LEFT` ; do
		if ( echo " $ALREADY_SEEN " | grep -v " $SERVICE " > /dev/null ) ; then
			CUR_COMPARE_SECONDS=$(($SECONDS_LEFT - $ACTIVITY_INTERVAL_MIN))
			while [ $CUR_COMPARE_SECONDS -gt $(($SECONDS_LEFT - $ACTIVITY_INTERVAL_MAX)) -a $CUR_COMPARE_SECONDS -gt 0 ] ; do
				if ( grep "^$SERVICE$" $WORKDIR/*_accesses_$CUR_COMPARE_SECONDS > /dev/null ) ; then
					if ( echo " $ALREADY_SEEN " | grep -v " $SERVICE " > /dev/null ) ; then
						echo
						echo "Program:     \"$SERVICE\""
						echo "Reason:      disk access."
						INIT=`findinit $SERVICE`
						if [ "$INIT" = "" ] ; then
							echo "Init script: none"
							echo "If you want to disable this program, you should do so manually."
						else
							echo "Init script: $INIT (GUESSED)"
							echo
							echo -n "Do you want to disable this service in battery mode? [y/N]: "
						fi
						read ANSWER
						if ( echo "$ANSWER" | grep -i ^y > /dev/null ) ; then
							if [ -e $INIT ] ; then
								ln -fs $INIT /etc/laptop-mode/batt-stop/`echo $INIT | sed 's/.*\///g'`
							fi
						fi
						ALREADY_SEEN="$ALREADY_SEEN $SERVICE"
					fi
				fi
				CUR_COMPARE_SECONDS=$(($CUR_COMPARE_SECONDS - 1))
			done
		fi
	done
	SECONDS_LEFT=$(($SECONDS_LEFT - 1))
done