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#!/bin/sh
#
# Script that measures statsd's PSS under an increasing number of metrics.
# Globals.
pss=""
pid=""
# Starts the loadtest.
start_loadtest() {
echo "Starting loadtest"
adb shell am start -n com.android.statsd.loadtest/.LoadtestActivity --es "type" "start"
}
# Stops the loadtest.
stop_loadtest() {
echo "Stopping loadtest"
adb shell am start -n com.android.statsd.loadtest/.LoadtestActivity --es "type" "stop"
}
# Sets the metrics replication.
# Arguments:
# $1: The replication factor.
set_replication() {
adb shell am start -n com.android.statsd.loadtest/.LoadtestActivity --es "type" "set_replication" --ei "replication" "${1}"
echo "Replication set to ${1}"
}
# Reads statsd's pid and PSS.
update_pid_and_pss() {
# Command that reads the PSS for statsd. This also gives us its pid.
get_mem=$(adb shell dumpsys meminfo |grep statsd)
# Looks for statsd's pid.
regex="([0-9,]+)K: statsd \(pid ([0-9]+)\).*"
if [[ $get_mem =~ $regex ]]; then
pss=$(echo "${BASH_REMATCH[1]}" | tr -d , | sed 's/\.//g')
pid=$(echo "${BASH_REMATCH[2]}")
else
echo $cmd doesnt match $regex
fi
}
# Kills statsd.
# Assumes the pid has been set.
kill_statsd() {
echo "Killing statsd (pid ${pid})"
adb shell kill -9 "${pid}"
}
# Main loop.
main() {
start_time=$(date +%s)
values=()
stop_loadtest
echo ""
echo "********************* NEW LOADTEST ************************"
update_pid_and_pss
for replication in 1 2 4 8 16 32 64 128 256 512 1024 2048 4096
do
echo "**** Starting test at replication ${replication} ****"
# (1) Restart statsd. This will ensure its state is empty.
kill_statsd
sleep 3 # wait a bit for it to restart
update_pid_and_pss
echo "Before the test, statsd's PSS is ${pss}"
# (2) Set the replication.
set_replication "${replication}"
sleep 1 # wait a bit
# (3) Start the loadtest.
start_loadtest
# (4) Wait several seconds, then read the PSS.
sleep 100 && update_pid_and_pss
echo "During the test, statsd's PSS is ${pss}"
values+=(${pss})
echo "Values: ${values[@]}"
# (5) Stop loadtest.
stop_loadtest
sleep 2
echo ""
done
end_time=$(date +%s)
echo "Completed loadtest in $((${end_time} - ${start_time})) seconds."
values_as_str=$(IFS=$'\n'; echo "${values[*]}")
echo "The PSS values are:"
echo "${values_as_str}"
echo ""
}
main
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