plot-nfs-commit.sh

#!/bin/bash

for dir
do

#      flush-0:23-2648  [002]   331.554492: nfs_commit_unstable_pages: bdi 0:23: ino=7307267 npages=105770 tocommit=4 write_chunk=8192 sync=0 ret=16371

#     kworker/5:1-418   [005]   103.526752: nfs_commit_release: bdi 0:21: ino=2614859 offset=0 len=1


plot() {
send=$1
release=$2
suffix=$3
gnuplot <<EOF
set size 1
set terminal pngcairo size ${width:-1280}, 800
set output "nfs-commit$suffix.png"

set xlabel "time (s)"
set ylabel "commit size (MB)"

plot "$send" using 1:(\$5/256) with       steps             title "write chunk", \
     "$send" using 1:(\$7/256) with      points pt 5 ps 0.6 title "send commit", \
     "$release" using 1:(\$4/256) with   points pt 2 ps 0.6 title "release commit"
EOF
}

trace_file=trace.bz2
cd $dir

bzcat $trace_file | grep -qF "nfs_commit_unstable_pages" || exit 1

bzcat $trace_file | grep -F "nfs_commit_unstable_pages" |\
	grep -vF 'bdi 0:15:' |\
	grep -vF 'ret=0' |\
	sed 's/.*\]//' |\
	sed 's/bdi [^ ]\+//' |\
	sed 's/[^0-9.-]\+/ /g' > trace-commit

[[ $? -eq 0 ]] || exit

bzcat $trace_file | grep -F "nfs_commit_release" |\
	grep -vF 'bdi 0:15:' |\
	sed 's/.*\]//' |\
	sed 's/bdi.[^ ]\+//' |\
	sed 's/[^0-9.-]\+/ /g' > trace-commit-release

plot trace-commit trace-commit-release

# grep -F "nfs_commit" $trace_file |\
# 	grep -vF "ret=0" > trace-commit-nonzero

# tail -n 300 < trace-commit-nonzero > trace-commit-nonzero-300

# trace_file=trace-commit-nonzero-300
# grep -F "nfs_commit_unstable_pages" $trace_file |\
# 	sed 's/.*\]//' |\
# 	sed 's/bdi.[^ ]\+//' |\
# 	sed 's/[^0-9.-]\+/ /g' > trace-commit-300
# 
# grep -F "nfs_commit_release" $trace_file |\
# 	sed 's/.*\]//' |\
# 	sed 's/bdi.[^ ]\+//' |\
# 	sed 's/[^0-9.-]\+/ /g' > trace-commit-release-300
# 
# plot trace-commit trace-commit-release -300

if [[ $lines -ge 300 ]]; then
width=6400
plot trace-commit trace-commit-release +
fi

cd ..
done