| #!/bin/bash |
| |
| # This file is part of PulseAudio. |
| # |
| # Copyright 2015 Ahmed S. Darwish <darwish.07@gmail.com> |
| # |
| # PulseAudio is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU Lesser General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # PulseAudio is distributed in the hope that it will be useful, but |
| # WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| # General Public License for more details. |
| # |
| # You should have received a copy of the GNU Lesser General Public License |
| # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. |
| |
| # |
| # Measure PulseAudio memory usage (VmSize, Private+Shared_Dirty) |
| # while increasing the number of connected clients over time. |
| # |
| # To avoid premature client exits, please ensure giving a long |
| # wave file as the script's first parameter. |
| # |
| |
| _bold="\x1B[1m" |
| _error="\x1B[1;31m" |
| _reset="\x1B[0m" |
| |
| BASENAME=$(basename $0) |
| PROMPT="${_bold}[$BASENAME]${_reset}" |
| error() { |
| echo -e "$PROMPT: ** Error: ${_error}$1${_reset}" >&2; exit -1 |
| } |
| msg() { |
| echo -e "$PROMPT: $1" |
| } |
| |
| _absolute_dirname="$(dirname `readlink -f $0`)" |
| PA_HOME="${_absolute_dirname%/scripts}" |
| [ -d "$PA_HOME/src" -a -d "$PA_HOME/scripts" ] || |
| error "This script can only be executed from PulseAudio source tree" |
| |
| PA=${PA_HOME}/src/pulseaudio |
| PA_CAT=${PA_HOME}/src/pacat |
| PA_PLAY=${PA_HOME}/src/paplay |
| PA_FLAGS="-n -F ${PA_HOME}/src/default.pa -p ${PA_HOME}/src/" |
| |
| [ -L "$PA_PLAY" ] || ln -sf .libs/lt-pacat $PA_PLAY |
| PA_PLAY_PROCESS_NAME="paplay" |
| |
| SCRIPTS_DIR=${PA_HOME}/scripts |
| BENCHMARKS_DIR=${SCRIPTS_DIR}/benchmarks |
| GNUPLOT_SCRIPT=${SCRIPTS_DIR}/plot_memory_usage.gp |
| OUTPUT_FILE=${BENCHMARKS_DIR}/memory-usage-`date -Iseconds`.txt |
| SYMLINK_LATEST_OUTPUT_FILE=${BENCHMARKS_DIR}/memory-usage-LATEST.txt |
| |
| MAX_CLIENTS=30 |
| |
| [ -e "$PA" ] || error "$PA does not exist. Compile PulseAudio tree first." |
| [ -x "$PA" ] || error "$PA cannot be executed" |
| [ -x "$PA_CAT" ] || error "$PA_CAT cannot be executed" |
| |
| AUDIO_FILE="$1" |
| [ -n "$AUDIO_FILE" ] || error "Usage: $BASENAME AUDIO_FILE" |
| [ -e "$AUDIO_FILE" ] || error "$AUDIO_FILE does not exist" |
| [ -f "$AUDIO_FILE" ] || error "$AUDIO_FILE is not a regular file" |
| |
| $PA --check >/dev/null 2>&1 |
| [ "$?" -ne "0" ] || { |
| msg "A PulseAudio daemon is already running on your system" |
| msg "To use this script, please do the following first:" |
| msg " 1. Add autospawn=no to $HOME/.pulse/client.conf" |
| msg " 2. Kill current daemon instance using 'pulseaudio --kill'" |
| error "Failed to start PulseAudio daemon" |
| } |
| |
| msg "Hello. Benchmarking PulseAudio daemon memory usage over time" |
| |
| # Check Linux Kernel's Documentation/sysctl/vm.txt for details. |
| msg "Ensuring consistent results by dropping all VM caches!" |
| sudo bash -c "sync && echo 3 >/proc/sys/vm/drop_caches" |
| |
| msg "Starting PulseAudio daemon" |
| PULSE_LOG=0 PULSE_LOG_COLORS= PULSE_LOG_META= $PA $PA_FLAGS & |
| _pid=$! |
| |
| # Give PA daemon time to initialize everything and vacuum. We want |
| # to make the _starting_ dirty RSS memory usage (0 clients) as |
| # equivalent as possible for multiple trials. |
| sleep 12 |
| |
| $PA --check >/dev/null 2>&1 |
| [ "$?" -eq "0" ] || error "Failed to start PulseAudio daemon" |
| |
| echo "# ClientCount VmSize (KiB) DirtyRSS (KiB)" >$OUTPUT_FILE |
| |
| msg "Starting PulseAudio clients" |
| _i=1; |
| while true; do |
| [ "$_i" -le "$MAX_CLIENTS" ] || break |
| |
| _vmsize=`ps -o vsize= $_pid` |
| _drss=`awk '/(Shared|Private)_Dirty:/{ sum += $2 } END { print sum }' /proc/$_pid/smaps` |
| [ "$?" -eq "0" ] || error "Error sampling PulseAudio RSS memory usage" |
| |
| echo " $_i $_vmsize $_drss" >>$OUTPUT_FILE |
| |
| $PA_PLAY $AUDIO_FILE 2>/dev/null & |
| _i=$((_i + 1)) |
| |
| sleep 1 |
| done |
| msg "Finished starting ${MAX_CLIENTS} PulseAudio clients over time" |
| |
| _n_clients_still_alive=$(ps -C $PA_PLAY_PROCESS_NAME --no-headers | wc -l) |
| [ "$_n_clients_still_alive" -ge "$MAX_CLIENTS" ] || { |
| msg "You did not provide a long-enough wave file for clients to play" |
| msg "Only $_n_clients_still_alive clients are now active; expected $MAX_CLIENTS" |
| error "Please provide a large wave file (~ $((MAX_CLIENTS*2))s) then redo the benchmarks" |
| } |
| |
| msg "Killing PulseAudio daemon" |
| $PA --kill >/dev/null 2>&1 |
| |
| rm -f $SYMLINK_LATEST_OUTPUT_FILE |
| ln -s $OUTPUT_FILE $SYMLINK_LATEST_OUTPUT_FILE |
| |
| msg "Sampling daemon memory usage done!" |
| msg "Check the results at $SYMLINK_LATEST_OUTPUT_FILE" |
| msg "Plot these results using 'gnuplot $GNUPLOT_SCRIPT'" |