Difference between revisions of "File:Kernel patches stats.png"

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(uploaded a new version of "File:Kernel patches stats.png": 2.6.38 release)
(Updated to 3.x kernel series)
Line 14: Line 14:
 
<small><source lang="bash">
 
<small><source lang="bash">
 
#!/bin/sh
 
#!/bin/sh
 
+
 
# Whose patches to count
 
# Whose patches to count
 
PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@'
 
PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@'
 
+
 
# Return the date of the given tag, in a format usable by gnuplot
 
# Return the date of the given tag, in a format usable by gnuplot
 
get_tag_date() {
 
get_tag_date() {
Line 24: Line 24:
 
sed 's/ ..:..:..//' | sed 's/ /-/g'
 
sed 's/ ..:..:..//' | sed 's/ /-/g'
 
}
 
}
 
+
 
# Count the number of patches whose authors match $PAT,
 
# Count the number of patches whose authors match $PAT,
 
# for the period between two given git tags
 
# for the period between two given git tags
Line 31: Line 31:
 
egrep '^Author: ' | egrep $PAT | wc -l
 
egrep '^Author: ' | egrep $PAT | wc -l
 
}
 
}
 +
 +
# Old 2.6 kernel branch
 +
# We start from 2.6.12 -- the first kernel available in git
 +
# and end on 2.6.39 -- the last kernel on 2.6 branch
 +
for f in $(seq 13 40); do
 +
v1=v2.6.$((f-1))
 +
d1=$(get_tag_date $v1)
 +
if [ $f -gt 39 ]; then
 +
v2=$HEAD
 +
else
 +
v2=v2.6.$f
 +
fi
 +
d2=$(get_tag_date $v2)
 +
count=$(count_patches $v1 $v2)
 +
if test "$count" -gt 0; then
 +
echo $d2 $v2 " " $count
 +
fi
 +
 +
done | sed 's/ /\t/g'
  
# What is the latest kernel patch number (i.e. x in 2.6.x)
+
# New 3.x kernel branch
 +
# What is the latest kernel patch number (i.e. x in 3.x)
 
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
 
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
 
+
 
# Find out if number of patches for HEAD is much more
 
# Find out if number of patches for HEAD is much more
 
# than for latest -rc. If yes, use HEAD, otherwise -rc.
 
# than for latest -rc. If yes, use HEAD, otherwise -rc.
Line 41: Line 61:
 
if ! test -z "$last_rc"; then
 
if ! test -z "$last_rc"; then
 
much_more=15
 
much_more=15
count_head=$(count_patches v2.6.$latest HEAD)
+
count_head=$(count_patches v3.$latest HEAD)
count_rc=$(count_patches v2.6.$latest $last_rc)
+
count_rc=$(count_patches v3.$latest $last_rc)
 
if test $count_head -gt $((count_rc+much_more)); then
 
if test $count_head -gt $((count_rc+much_more)); then
 
HEAD="HEAD  "
 
HEAD="HEAD  "
Line 48: Line 68:
 
fi
 
fi
  
# We start from 2.6.12 -- the first kernel available in git
+
# We start from 3.0
for f in $(seq 13 $((latest+1))); do
+
for f in $(seq 1 $((latest+1))); do
v1=v2.6.$((f-1))
+
v1=v3.$((f-1))
 
d1=$(get_tag_date $v1)
 
d1=$(get_tag_date $v1)
 
if [ $f -gt $latest ]; then
 
if [ $f -gt $latest ]; then
 
v2=$HEAD
 
v2=$HEAD
 
else
 
else
v2=v2.6.$f
+
v2=v3.$f
 
fi
 
fi
 
d2=$(get_tag_date $v2)
 
d2=$(get_tag_date $v2)
Line 62: Line 82:
 
echo $d2 $v2 " " $count
 
echo $d2 $v2 " " $count
 
fi
 
fi
 
+
 
done | sed 's/ /\t/g'
 
done | sed 's/ /\t/g'
 
</source></small>
 
</source></small>

Revision as of 19:38, 26 January 2012


Description

This graph shows how many patches from OpenVZ developers were merged into mainstream Linux kernel, per each kernel version.

It is drawn by gnuplot using the data set obtained from kernel git repository.

Source code

Collect data

Here is the script to produce the data for the graph, called count:

#!/bin/sh
 
# Whose patches to count
PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@'
 
# Return the date of the given tag, in a format usable by gnuplot
get_tag_date() {
	echo $(git show $1 | egrep ^Date: | head -n1) | 
		sed 's/^Date: ... \(.*\) [-+]....$/\1/' |
		sed 's/ ..:..:..//' | sed 's/ /-/g'
}
 
# Count the number of patches whose authors match $PAT,
# for the period between two given git tags
count_patches() {
	git log --pretty=short --no-merges $1..$2 |
		egrep '^Author: ' | egrep $PAT | wc -l
}
 
# Old 2.6 kernel branch
# We start from 2.6.12 -- the first kernel available in git
# and end on 2.6.39 -- the last kernel on 2.6 branch
for f in $(seq 13 40); do
	v1=v2.6.$((f-1))
	d1=$(get_tag_date $v1)
	if [ $f -gt 39 ]; then
		v2=$HEAD
	else
		v2=v2.6.$f
	fi
	d2=$(get_tag_date $v2)
	count=$(count_patches $v1 $v2)
	if test "$count" -gt 0; then
		echo $d2 $v2 " " $count
	fi
 
done | sed 's/ /\t/g'

# New 3.x kernel branch
# What is the latest kernel patch number (i.e. x in 3.x)
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
 
# Find out if number of patches for HEAD is much more
# than for latest -rc. If yes, use HEAD, otherwise -rc.
last_rc=$(git tag | tail -n 1 | grep -- -rc)
HEAD=$last_rc
if ! test -z "$last_rc"; then
	much_more=15
	count_head=$(count_patches v3.$latest HEAD)
	count_rc=$(count_patches v3.$latest $last_rc)
	if test $count_head -gt $((count_rc+much_more)); then
		HEAD="HEAD   "
	fi
fi

# We start from 3.0
for f in $(seq 1 $((latest+1))); do
	v1=v3.$((f-1))
	d1=$(get_tag_date $v1)
	if [ $f -gt $latest ]; then
		v2=$HEAD
	else
		v2=v3.$f
	fi
	d2=$(get_tag_date $v2)
	count=$(count_patches $v1 $v2)
	if test "$count" -gt 0; then
		echo $d2 $v2 " " $count
	fi
 
done | sed 's/ /\t/g'

Draw the graph

Here is the script to produce the graph. Note it calls the previous script under the name 'count'.

#!/bin/sh

if test "$1" != "-f"; then
	git checkout master
	git pull
	sh count > time.dat
fi

DATE=$(tail -n 1 time.dat | cut -f 1 | awk -F- '{print $2,$1,$3}')
MAXY=$(awk 'BEGIN {max=0}; ($3 > max) {max=$3}; END {print max+50}' < time.dat)
# GNU date is powerful!
MAXX=$(date +%b-1-%Y --date='+2 months')

export GDFONTPATH=/usr/share/fonts/msttcorefonts/
cat << EOF | gnuplot > plot.png
set terminal png enhanced font "verdanab,20" size 1600,1200
#set terminal png enhanced transparent font "verdanab,14" size 1200,600
#set terminal svg enhanced font "verdanab,8" size 800,600

set title "OpenVZ team kernel patches progress as of ${DATE}"

unset xlabel
set xdata time
set timefmt "%b-%d-%Y"
set format x "%b\n%Y"
set grid xtics mxtics noytics

set xrange [ : "${MAXX}" ]
set yrange [ 0 : ${MAXY} ]
set ylabel "Number of patches from OpenVZ team,\n per kernel release, accepted into mainstream"

set border 3		# no lines at right and top
set xtics nomirror	# no tics at top
set ytics nomirror	# no tics at right

plot 'time.dat' using 1:3 with linespoints pt 6 ps 1 lw 2 lt 2 notitle, \
	''	using 1:3:2 with labels left offset 0,1 rotate notitle, \
	''	using 1:3:3 with labels left offset 0.7,0 notitle

EOF

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