bb-matrix: initial scripts to record TIME(1) metrics for BB and PM combinations

The bb-matrix.sh script will run a bitbake command, building core-image-minimal
by default, for various combinations of BB_NUMBER_THREADS and PARALLEL_MAKE. It
records all relevant metrics of the TIME(1) command for each combination in a
data file.

The bb-matrix-plot.sh script can be used to visualize each of these metrics via
a 3d surface plot, either solid surface or wireframe with a value-map
projection on the XY plane.

(From OE-Core rev: 50fdf562ce5c41782ff1bdea43a20e769e61eb92)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/contrib/bb-perf/bb-matrix-plot.sh

@@ -0,0 +1,137 @@
+#!/bin/bash
+#
+# Copyright (c) 2011, Intel Corporation.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# DESCRIPTION
+# This script operates on the .dat file generated by bb-matrix.sh. It tolerates
+# the header by skipping the first line, but error messages and bad data records
+# need to be removed first. It will generate three views of the plot, and leave
+# an interactive view open for further analysis.
+#
+# AUTHORS
+# Darren Hart <dvhart@linux.intel.com>
+#
+
+# Setup the defaults
+DATFILE="bb-matrix.dat"
+XLABEL="BB_NUMBER_THREADS"
+YLABEL="PARALLEL_MAKE"
+FIELD=3
+DEF_TITLE="Elapsed Time (seconds)"
+PM3D_FRAGMENT="unset surface; set pm3d at s hidden3d 100"
+SIZE="640,480"
+
+function usage {
+CMD=$(basename $0)
+cat <<EOM
+Usage: $CMD [-d datfile] [-f field] [-h] [-t title] [-w]
+  -d datfile    The data file generated by bb-matrix.sh (default: $DATFILE)
+  -f field      The field index to plot as the Z axis from the data file
+                (default: $FIELD, "$DEF_TITLE")
+  -h            Display this help message
+  -s W,H        PNG and window size in pixels (default: $SIZE)
+  -t title      The title to display, should describe the field (-f) and units
+                (default: "$DEF_TITLE")
+  -w            Render the plot as wireframe with a 2D colormap projected on the
+                XY plane rather than as the texture for the surface
+EOM
+}
+
+# Parse and validate arguments
+while getopts "d:f:hs:t:w" OPT; do
+	case $OPT in
+	d)
+		DATFILE="$OPTARG"
+		;;
+	f)
+		FIELD="$OPTARG"
+		;;
+	h)
+		usage
+		exit 0
+		;;
+	s)
+		SIZE="$OPTARG"
+		;;
+	t)
+		TITLE="$OPTARG"
+		;;
+	w)
+		PM3D_FRAGMENT="set pm3d at b"
+		W="-w"
+		;;
+	*)
+		usage
+		exit 1
+		;;
+	esac
+done
+
+# Ensure the data file exists
+if [ ! -f "$DATFILE" ]; then
+	echo "ERROR: $DATFILE does not exist"
+	usage
+	exit 1
+fi
+PLOT_BASENAME=${DATFILE%.*}-f$FIELD$W
+
+# Set a sane title
+# TODO: parse the header and define titles for each format parameter for TIME(1)
+if [ -z "$TITLE" ]; then
+	if [ ! "$FIELD" == "3" ]; then
+		TITLE="Field $FIELD"
+	else
+		TITLE="$DEF_TITLE"
+	fi
+fi
+
+# Determine the dgrid3d mesh dimensions size
+MIN=$(tail -n +2 "$DATFILE" | cut -d ' ' -f 1 | sort | uniq | head -n1)
+MAX=$(tail -n +2 "$DATFILE" | cut -d ' ' -f 1 | sort | uniq | tail -n1)
+BB_CNT=$[${MAX#*0} - $MIN + 1]
+MIN=$(tail -n +2 "$DATFILE" | cut -d ' ' -f 2 | sort | uniq | head -n1)
+MAX=$(tail -n +2 "$DATFILE" | cut -d ' ' -f 2 | sort | uniq | tail -n1)
+PM_CNT=$[${MAX#*0} - $MIN + 1]
+
+
+(cat <<EOF
+set title "$TITLE"
+set xlabel "$XLABEL"
+set ylabel "$YLABEL"
+set style line 100 lt 5 lw 1.5
+$PM3D_FRAGMENT
+set dgrid3d $PM_CNT,$BB_CNT
+set ticslevel 0.2
+
+set term png size $SIZE
+set output "$PLOT_BASENAME.png"
+splot "$DATFILE" every ::1 using 1:2:$FIELD with lines ls 100
+
+set view 90,0
+set output "$PLOT_BASENAME-bb.png"
+replot
+
+set view 90,90
+set output "$PLOT_BASENAME-pm.png"
+replot
+
+set view 60,30
+set term wxt size $SIZE
+replot
+EOF
+) | gnuplot --persist

scripts/contrib/bb-perf/bb-matrix.sh

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+#!/bin/bash
+#
+# Copyright (c) 2011, Intel Corporation.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# DESCRIPTION
+# This script runs BB_CMD (typically building core-image-sato) for all
+# combincations of BB_RANGE and PM_RANGE values. It saves off all the console
+# logs, the buildstats directories, and creates a bb-pm-runtime.dat file which
+# can be used to postprocess the results with a plotting tool, spreadsheet, etc.
+# Before running this script, it is recommended that you pre-download all the
+# necessary sources by performing the BB_CMD once manually. It is also a good
+# idea to disable cron to avoid runtime variations caused by things like the
+# locate process. Be sure to sanitize the dat file prior to post-processing as
+# it may contain error messages or bad runs that should be removed.
+#
+# AUTHORS
+# Darren Hart <dvhart@linux.intel.com>
+#
+
+# The following ranges are appropriate for a 4 core system with 8 logical units
+BB_RANGE="04 05 06 07 08 09 10 11 12 13 14 15 16"
+PM_RANGE="04 05 06 07 08 09 10 11 12 13 14 15 16"
+
+DATADIR="bb-matrix-$$"
+BB_CMD="bitbake core-image-minimal"
+RUNTIME_LOG="$DATADIR/bb-matrix.dat"
+
+# See TIME(1) for a description of the time format parameters
+# The following all report 0: W K r s t w
+TIME_STR="%e %S %U %P %c %w %R %F %M %x"
+
+# Prepare the DATADIR
+mkdir $DATADIR
+if [ $? -ne 0 ]; then
+	echo "Failed to create $DATADIR."
+	exit 1
+fi
+
+# Add a simple header
+echo "BB PM $TIME_STR" > $RUNTIME_LOG
+for BB in $BB_RANGE; do
+	for PM in $PM_RANGE; do
+		RUNDIR="$DATADIR/$BB-$PM-build"
+		mkdir $RUNDIR
+		BB_LOG=$RUNDIR/$BB-$PM-bitbake.log
+		date
+		echo "BB=$BB PM=$PM Logging to $BB_LOG"
+
+		# Export the variables under test and run the bitbake command
+		export BB_NUMBER_THREADS="${BB##*0}"
+		export PARALLEL_MAKE="-j ${PM##*0}"
+		/usr/bin/time -f "$BB $PM $TIME_STR" -a -o $RUNTIME_LOG $BB_CMD &> $BB_LOG
+		
+		echo "  $(tail -n1 $RUNTIME_LOG)"
+		echo -n "  Cleaning up..."
+		mv tmp/buildstats $RUNDIR/$BB-$PM-buildstats
+		rm -f pseudodone &> /dev/null
+		rm -rf tmp &> /dev/null
+		rm -rf sstate-cache &> /dev/null
+		rm -rf tmp-eglibc &> /dev/null
+		echo "done"
+	done
+done