Runtime Stats Komparator

Data

Version Selector

Page Selector

Version	Pos.	Time▴	Percent	Count

Page Comparison for

Page	Time	Percent▾	%/Entry	Count
Total:

Impact list for

Name	Time	Percent▾	Top Pages

Pos.	Name	Time	Percent	Count

Usage

Install scipy, e.g. sudo aptitude install python-scipy
Build chrome with the extended runtime callstats.

Run callstats.py with a web-page-replay archive:

$V8_DIR/tools/callstats.py run \
        --replay-bin=$CHROME_SRC/third_party/webpagereplay/replay.py \
        --replay-wpr=$INPUT_DIR/top25.wpr \
        --js-flags="" \
        --with-chrome=$CHROME_SRC/out/Release/chrome \
        --sites-file=$INPUT_DIR/top25.json

Move results file to a subdirectory: mkdir $VERSION_DIR; mv *.txt $VERSION_DIR
Repeat from step 1 with a different configuration (e.g. --js-flags="--nolazy").
Create the final results file: ./callstats.py json $VERSION_DIR1 $VERSION_DIR2 > result.json
Use results.json on this site.