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

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Revision as of 07:36, 30 October 2019


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|kuznet@'
#PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@|gorcunov@'
PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|virtuozzo.com|kuznet@|gorcunov@'

# 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
}

count_total_patches() {
	git log --pretty=short --no-merges $1..$2 | grep -c '^commit '
}

# Latest 3.x kernel
#latest3=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')
latest3=$(git tag | grep -v -- -rc | grep -F 'v3.' | \
		awk -F . '{print $2}' | sort -n | tail -n1)
# Latest 2.6.x kernel
latest26=39

# Find out if number of patches for HEAD is much more
# than for latest -rc. If yes, use HEAD, otherwise -rc.:
last_rc=$(git describe --abbrev=0)
HEAD=$last_rc
if ! test -z "$last_rc"; then
	much_more=10
	count_head=$(count_patches v3.$latest3 HEAD)
	count_rc=$(count_patches v3.$latest3 $last_rc)
	if test $count_head -gt $((count_rc+much_more)); then
		HEAD="HEAD   "
	fi
fi

pv=''
for v in $(git for-each-ref --sort='*authordate' --format='%(tag)' refs/tags |\
		 grep -v -E -- '-rc|-tree|v2.6.11') HEAD; do
	if [ -z "$pv" ]; then
		pv=$v
		continue
	fi

	pd=$(get_tag_date $pv)
	d=$(get_tag_date $v)
	count_ours=$(count_patches $pv $v)
	count_total=$(count_total_patches $pv $v)
	if test "$count_ours" -gt 0; then
		echo $d $v " " $count_ours $count_total
	fi
	pv=$v
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

REPO=~/git/linux/.git
COUNT=$(pwd)/count
OUT=$(pwd)/time.dat
export GDFONTPATH=/usr/share/fonts/microsoft
export GIT_DIR=$REPO

if test "$1" != "-f"; then
	echo "== Previous (old) stats =="
	tail -n 2 $OUT
	# Update the repo and count new stats
	(cd $REPO && cd .. && git pull) && sh $COUNT > $OUT
	echo "== New stats =="
	tail -n 2 $OUT
fi

DATE=$(tail -n 1 $OUT | cut -f 1 | awk -F- '{print $2,$1,$3}')
MAXY=$(awk 'BEGIN {max=0}; ($3 > max) {max=$3}; END {print max+80}' < time.dat)
# GNU date is powerful!
MAXX=$(date +%b-1-%Y --date='+2 months')

cat << EOF | gnuplot > plot.png
set terminal png enhanced font "verdana,13" 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 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 '${OUT}' using 1:3 with linespoints pt 6 ps 1 lw 2 lt 2 notitle, \
	''	using 1:3:2 with labels left offset 0,5.5 rotate notitle, \
	''	using 1:3:3 with labels left offset 0.7,0 notitle

EOF

File history

Click on a date/time to view the file as it appeared at that time.

(newest | oldest) View ( | ) (10 | 20 | 50 | 100 | 250 | 500)
Date/TimeThumbnailDimensionsUserComment
03:17, 24 March 2014Thumbnail for version as of 03:17, 24 March 20141,600 × 1,200 (38 KB)Kir (talk | contribs)Updated
22:46, 19 January 2013Thumbnail for version as of 22:46, 19 January 20131,600 × 1,200 (49 KB)Glic3rinu (talk | contribs)3.8-rc4, good work guys!
20:48, 19 March 2012Thumbnail for version as of 20:48, 19 March 20121,600 × 1,200 (47 KB)Glic3rinu (talk | contribs)kernel 3.3 released (c/r patches)
19:51, 26 January 2012Thumbnail for version as of 19:51, 26 January 20121,600 × 1,200 (47 KB)Glic3rinu (talk | contribs)now 3.0 is displayed too
19:39, 26 January 2012Thumbnail for version as of 19:39, 26 January 20121,600 × 1,200 (46 KB)Glic3rinu (talk | contribs)v3.3-rc1
12:08, 20 March 2011Thumbnail for version as of 12:08, 20 March 20111,600 × 1,200 (47 KB)Glic3rinu (talk | contribs)2.6.38 release
11:48, 2 August 2010Thumbnail for version as of 11:48, 2 August 20101,600 × 1,200 (45 KB)Glic3rinu (talk | contribs)2.6.35 released
17:54, 1 March 2010Thumbnail for version as of 17:54, 1 March 20101,600 × 1,200 (44 KB)Glic3rinu (talk | contribs)
17:52, 1 March 2010Thumbnail for version as of 17:52, 1 March 20101,600 × 1,200 (38 KB)Glic3rinu (talk | contribs)Reverted to version as of 08:50, 14 July 2008
01:59, 30 January 2010Thumbnail for version as of 01:59, 30 January 20101,600 × 1,200 (44 KB)Glic3rinu (talk | contribs)
(newest | oldest) View ( | ) (10 | 20 | 50 | 100 | 250 | 500)
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