v8/tools/plot-timer-events
Mythri 7371c34b6b Use --opt instead of --crankshaft in tests.
1. Replaces --crankshaft with --opt in tests.
2. Also fixes presubmit to check for --opt flag when
assertOptimized is used.
3. Updates testrunner/local/variants.py and 
v8_foozie.py to use --opt flag.
This would mean, nooptimize variant means there are
no optimizations. Not even with %OptimizeFunctionOnNextCall.

Bug:v8:6325

Change-Id: I638e743d0773a6729c6b9749e2ca1e2537f12ce6
Reviewed-on: https://chromium-review.googlesource.com/490206
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44985}
2017-04-28 14:20:39 +00:00

93 lines
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Executable File

#!/bin/sh
# find the name of the log file to process, it must not start with a dash.
log_file="v8.log"
for arg in "$@"
do
if ! expr "X${arg}" : "^X-" > /dev/null; then
log_file=${arg}
fi
done
tools_path=`cd $(dirname "$0");pwd`
if test ! "$D8_PATH"; then
d8_public=`which d8`
if test -x "$d8_public"; then D8_PATH=$(dirname "$d8_public"); fi
fi
if test ! -n "$D8_PATH"; then
D8_PATH=$tools_path/..
fi
d8_exec=$D8_PATH/d8
if test ! -x "$d8_exec"; then
D8_PATH=`pwd`/out/native
d8_exec=$D8_PATH/d8
fi
if test ! -x "$d8_exec"; then
d8_exec=`grep -m 1 -o '".*/d8"' $log_file | sed 's/"//g'`
fi
if test ! -x "$d8_exec"; then
echo "d8 shell not found in $D8_PATH"
echo "To build, execute 'make native' from the V8 directory"
exit 1
fi
contains=0;
for arg in "$@"; do
`echo "$arg" | grep -q "^--distortion"`
if test $? -eq 0; then
contains=1
break
fi
done
if test "$contains" -eq 0; then
# Try to find out how much the instrumentation overhead is.
calibration_log=calibration.log
calibration_script="for (var i = 0; i < 1000000; i++) print();"
$d8_exec --noopt --prof --logfile $calibration_log \
--log-timer-events -e "$calibration_script" > /dev/null
t_1_start=`grep "timer-event-start,\"V8.Execute\"" $calibration_log \
| tail -n1 | awk -F, '{print $3}'`
t_1_end=`grep "timer-event-end,\"V8.Execute\"" $calibration_log \
| tail -n1 | awk -F, '{print $3}'`
n_1=`grep "timer-event\|tick" $calibration_log | wc -l`
$d8_exec --noopt --prof --logfile $calibration_log \
--log-internal-timer-events -e "$calibration_script" > /dev/null
t_2_start=`grep "timer-event-start,\"V8.Execute\"" $calibration_log \
| tail -n1 | awk -F, '{print $3}'`
t_2_end=`grep "timer-event-end,\"V8.Execute\"" $calibration_log \
| tail -n1 | awk -F, '{print $3}'`
n_2=`grep "timer-event\|tick" $calibration_log | wc -l`
rm $calibration_log
# Overhead in picoseconds.
distortion=`echo "1000*(($t_1_end - $t_1_start) - ($t_2_end - $t_2_start)) \
/ ($n_1 - $n_2)" | bc`
options="--distortion=$distortion"
fi
cat $log_file |
$d8_exec $tools_path/csvparser.js $tools_path/splaytree.js \
$tools_path/codemap.js $tools_path/profile.js $tools_path/profile_view.js \
$tools_path/logreader.js $tools_path/tickprocessor.js \
$tools_path/profviz/composer.js $tools_path/profviz/stdio.js \
-- $@ $options 2>/dev/null > timer-events.plot
success=$?
if test $success -ne 0; then
cat timer-events.plot
else
cat timer-events.plot | gnuplot > timer-events.png
fi
rm -f timer-events.plot