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

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(uploaded a new version of "Image:Kernel patches stats.png": Updated to include v2.6.26-rc1)
(Collect data: Updated script)
Line 10: Line 10:
  
 
=== Collect data ===
 
=== Collect data ===
Here is the script to produce the data for the graph:
+
Here is the script to produce the data for the graph, called <code>count</code>:
  
 
<small><source lang="bash">
 
<small><source lang="bash">
 
#!/bin/sh
 
#!/bin/sh
  
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
+
# Whose patches to count
((latest++))
+
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() {
 
get_tag_date() {
        echo $(git show $1 | egrep ^Date: | head -n1) |
+
echo $(git show $1 | egrep ^Date: | head -n1) |  
                sed 's/^Date: ... \(.*\) [-+]....$/\1/' |
+
sed 's/^Date: ... \(.*\) [-+]....$/\1/' |
                sed 's/ ..:..:..//' | sed 's/ /-/g'
+
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
 
}
 
}
  
for f in $(seq 13 $latest); do
+
# What is the latest kernel patch number (i.e. x in 2.6.x)
        v1=v2.6.$((f-1))
+
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
        d1=$(get_tag_date $v1)
+
 
        if [ $f = $latest ]; then
+
# Find out if number of patches for HEAD is much more
                v2="HEAD   "
+
# than for latest -rc. If yes, use HEAD, otherwise -rc.
        else
+
last_rc=$(git tag | tail -n 1 | grep -- -rc)
                v2=v2.6.$f
+
HEAD=$last_rc
        fi
+
if ! test -z "$last_rc"; then
        d2=$(get_tag_date $v2)
+
much_more=15
        echo -n $d2 $v2 " "
+
count_head=$(count_patches v2.6.$latest HEAD)
        git log --pretty=short --no-merges $v1..$v2 | grep 'Author:' | egrep \
+
count_rc=$(count_patches v2.6.$latest $last_rc)
                '@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@' | wc -l
+
if test $count_head -gt $((count_rc+much_more)); then
 +
HEAD="HEAD  "
 +
fi
 +
fi
 +
 
 +
# We start from 2.6.12 -- the first kernel available in git
 +
for f in $(seq 13 $((latest+1))); do
 +
v1=v2.6.$((f-1))
 +
d1=$(get_tag_date $v1)
 +
if [ $f -gt $latest ]; then
 +
v2=$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'
 
done | sed 's/ /\t/g'
 
 
</source></small>
 
</source></small>
  

Revision as of 15:55, 4 May 2008


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
}

# What is the latest kernel patch number (i.e. x in 2.6.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 v2.6.$latest HEAD)
	count_rc=$(count_patches v2.6.$latest $last_rc)
	if test $count_head -gt $((count_rc+much_more)); then
		HEAD="HEAD   "
	fi
fi

# We start from 2.6.12 -- the first kernel available in git
for f in $(seq 13 $((latest+1))); do
	v1=v2.6.$((f-1))
	d1=$(get_tag_date $v1)
	if [ $f -gt $latest ]; then
		v2=$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'

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 pull
	sh count > time.dat
fi

DATE=$(date '+%d %b %Y')
MAXY=$(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 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, per kernel release,\naccepted 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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current05:47, 28 March 2022Thumbnail for version as of 05:47, 28 March 20221,600 × 1,200 (52 KB)Vvs (talk | contribs)v5.17+
15:00, 8 May 2021Thumbnail for version as of 15:00, 8 May 20211,600 × 1,200 (49 KB)Vvs (talk | contribs)v5.12+
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